VOL1(2016)
VOL.1, Issue1(June 2016)
| Digital Control Fuzzy Logic for a Water Tank Level Using Arduino | Fayçal CHABNI Rachid TALEB Abderrahmen BENBOUALI Mohammed Amin BOUTHIBA |
Fuzzy logic control has been successfully utilized in various industrial applications; it is generally used in complex control systems, such as chemical process control. Today, most of fuzzy logic controls are still implemented on expensive high performance processors. This paper analyzes the effectiveness of a fuzzy logic control using a low cost controller applied to water level control system. The paper also gives a low cost hardware solution and practical procedure for system identification and control. We started, first by identifying the process to obtain its mathematical model. Then we used two methods to control our system (PI and fuzzy control). Simulation and experimental results are presented.
Cite this article as:
Fayçal CHABNI, Rachid TALEB*, Abderrahmen BENBOUALI, Mohammed Amin BOUTHIBA, “Digital Control Fuzzy Logic for a Water Tank Level Using Arduino˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:2-10.
| Fault Tolerant Control of Induction Motor Drives Subject to Rotor Resistance Adaptation | N. Boumalha D. Kouchih M. Tadjine M.S. Boucherit |
This paper describes the synthesis of a vector fault tolerant control of induction motor drives using an adaptive observer. This observer is used to detect the rotor resistance and flux components using the stator terminal voltages and currents. The rotor resistance is adapted using a new algorithm which does not imply a high computational load. Stability analysis based on Lyapunov theory is performed in order to guarantee the closed loop stability. The rotor resistance is used for the correction of the controllers and the rotor time constant. To verify the tolerance and the applicability of this control, we consider the stator inter-turn fault which is frequently encountered in practice. An analytical method for the modelling of this fault is presented. The equations which describe the transient as well as steady state behavior of unsymmetrical induction machine including the computation of machine inductances are presented. These inductances are calculated analytically using the magnetic field distribution through the machine air-gap. Simulation results are provided to evaluate the consistency and performance of the proposed fault tolerant control of induction motor based vector control.
Cite this article as:
N. Boumalha, D. Kouchih, M. Tadjine, M.S. Boucherit, “Fault Tolerant Control of Induction Motor Drives Subject to Rotor Resistance Adaptation ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:11-22.
| Sensitivity Enhancement of Methane Detection Based On Hollow Core Photonic Crystal Fiber | R.Boufenar M. Bouamar A.Hocini |
Monitoring methane (CH4) concentration is essential in many industrial and environmental applications. Emission of such gases is indeed important to detect for health, safety and environmental reasons. The major risk in all these areas is an explosion hazard, which may occur if methane reaches its Lower Explosive Limit (LEL) of5% concentration in air. For that reason, it is necessary to develop gas sensors to monitor that methane levels below this value. Due to a weak absorption of methane, this gas is difficult to detect using conventional methods.Hollow core photonic crystal fibers (HC-PBF) have emerged as a promising technology in the field of gas sensing. The strong interaction achievable with these fibers are especially advantageous for the detection of weakly absorbing regions of methane. In this paper, we investigated, by full vectorial finite element method (FV-FEM) in Rsoft CAD environment, the dependency of relative sensitivity on the fiber parameters and wavelength. Consequently, we introduced the optimal structureof an index guiding hollow core photonic crystal fiber capable of measuring methane concentrations down to 0.1%in air. The simulations showed that the sensing sensitivity increased with an increase in the core diameter and a decrease in the distance between centers of two adjacent holes.
Cite this article as:
R.Boufenar, M. Bouamar, A.Hocini, “Sensitivity Enhancement of Methane Detection Based On Hollow Core Photonic Crystal Fiber ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:23-29.
| Photovoltaic effect in Light Emitting Diodes | K. Remidi A. Cheknane M. Haddadi |
This paper describes an experimental work on the electrical characterization of commercial LED of different colors and their photoelectric effect. A research work has been carried out to develop the experimental measurement in order to show the presence of a photovoltaic effect on LEDs. For this purpose, we measured the electrical characteristics of individual LED and studied their light intensities using a pyranometer EPLEY. This work focused mainly on red, green and yellowLEDs. Moreover, we have implemented an experimental system for the measurement of sensitivity of different LEDs depending on the power of light from a light source. A comparison was made between theoretical model and experimental results.
Cite this article as:
K. Remidi , A. Cheknane , M. Haddadi, “Photovoltaic effect in Light Emitting Diodes ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:30-36.
| A Combined Sliding Mode Space vector Modulation Control of the Shunt Active Power Filter Using Robust Harmonic Extraction Method | Adel Dahdouh Said Barkat Aissa Chouder |
This paper presents a combined sliding mode space vector modulation control of the shunt active power filter using robust harmonic extraction method to improve the power quality such as current harmonics and reactive power compensation due to the non-linear loads and unbalanced voltage source. To verify the validity of the analysis and the feasibility of the proposed control method a set of simulation tests have been conducted using Matlab/Simulink. A comparison between the conventional instantaneous powers method (PQ) used for harmonic extracting and the new PQ based on a multivariable extraction filter demonstrates the superiority of the proposed control scheme.
Cite this article as:
Adel Dahdouh, Said Barkat, Aissa Chouder, “A Combined Sliding Mode Space vector Modulation Control of the Shunt Active Power Filter Using Robust Harmonic Extraction Method ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:37-46.
| Hyperchaos-Based Cryptosystem for Multimedia Data Security | S. Benzegane S. Sadoudi M. Djeddou |
In this paper, we present a software development of multimedia streaming encryption using Hyperchaos-based Random Number Generator (HRNG) implemented in C#. The software implements and uses the proposed HRNG to generate keystream for encrypting and decrypting real-time multimedia data. The used HRNG consists of Hyperchaos Lorenz system which produces four signal outputs taken as encryption keys. The generated keys are characterized by high quality randomness which is confirmed by passing standard NIST statistical tests. Security analysis of the proposed encryption scheme through image and audio security analysis confirms its robustness against different kind of attacks.
Cite this article as:
S. Benzegane, S. Sadoudi and M. Djeddou, “Hyperchaos-Based Cryptosystem for Multimedia Data Security ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:47-58.
| Sliding mode control of a Five-Phase Series- Connected Two-Motor Drive | Lazhari NEZLI Omar Zouaid |
n this work, we study vector control and sliding mode control of series-connected five-phase two asynchronous machines supplied with a three levels inverter. After presentation of multiphase machines, we worked out the mathematical model of five phase asynchronous machine supplied with voltage inverter. Application of Park transformation reduces considerably the mathematical model of machine. After, we applied vector control and sliding mode control to the five-phase induction machine. After that, we study a multi-machine system which comport five-phase two asynchronous machines supplied with a single voltage inverter. In the last, we had the independent vector control and the sliding mode control of series-connected five-phase two asynchronous machines. We observe that an appropriate transposition of phase’s order permits an independent control of two machines.
Cite this article as:
Lazhari NEZLI and Omar Zouaid, “Sliding mode control of a Five-Phase Series- Connected Two-Motor Drive ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:59-68.
| Design and Evaluation of a DSP Based Differential Relay of Power Transformer | Abdelkader Abdelmoumene Rachid Bouderbala Hamid Bentarzi |
The problem of mal operation of differential protection of power transformer due to the inrush magnetizing current has long considered as a challenging problem. Several types of protection relays have been used to solve the issue (basic relay, percentage relay, multi slop ….). Each of them has its advantage and its limits. In this paper, a Digital differential relay has been developed and simulated. The logic used to distinguish between the inrush current and the internal fault is based on the theory of harmonic analysis. The behavior of the presented relay has been simulated versus various situations (inrush current, internal fault and external fault). The obtained results show that the proposed algorithm provides a good discrimination and a fast action.
Cite this article as:
Abdelkader Abdelmoumene, Rachid Bouderbala and Hamid Bentarzi, “Design and Evaluation of a DSP Based Differential Relay of Power Transformer ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:69-78.
| Fast Ensemble Empirical Mode Decomposition Using the Savitzky Golay filter | Wahiba Mohguen Raïs El’hadi Bekka |
Empirical mode decomposition (EMD) is a powerful algorithm proposed to analysis of nonlinear and non-stationary signals. The phenomenon of mode mixing is one of the major disadvantages of the EMD. The Ensemble EMD (EEMD) was introduced to eliminate the mode-mixing effect. The principle of EEMD is to add additional white noise into the signal with many trials. The noise in each trial is different; and the added noise can be completely cancelled out on average, if the number of trials is very high. The number of trials is a high computational load. The improvement on computational efficiency of EEMD is therefore required. In this paper, an improvement on the computing time of the EEMD was proposed by replacing white noise with white noise filtered using Savitzky-Golay (SG) filter. Numerical simulations were performed to demonstrate that such replacement has effectively reduced the number of trials to obtain a noise-free reconstructed signal.
Cite this article as:
Wahiba Mohguen and Raïs El’hadi Bekka, “Fast Ensemble Empirical Mode Decomposition Using the Savitzky Golay filter ˝, Algerian Journal of Signals and Systems, Vol.1, Issue1, June 2016. pp:79-86.
VOL.1, Issue2(December 2016)
| Describing the steganalysis tool: BBD15 “OurSecret detector” | BENAROUS Leila, DJOUDI Mohamed, BOURIDANE Ahmed |
Digital steganography is the art of hiding secret messages and data in innocent cover, most likely in images and videos. Images and videos offer the best cover files for steganography with their high capacity, by being innocent and for being easily exchanged without raising the suspicions of a third party. A lot are the free tools that embeds data in images and videos, among which is OurSecret. In this paper we aim to detect the stego images and videos created by OurSecret by developing a steganalysis tool BBD15.
Cite this article as:
BENAROUS Leila, DJOUDI Mohamed and BOURIDANE Ahmed, “Describing the steganalysis tool: BBD15 “OurSecret detector”˝, Algerian Journal of Signals and Systems, Vol.1, Issue2, December 2016. pp:88-91.
| A comparatives study of steganography and steganalysis tools | BENAROUS Leila, DJOUDI Mohamed, BOURIDANE Ahmed |
Steganography is one of the oldest methods of secure communication. It was an art at the beginning, now became a science. It aims to conceal secret messages or data inside an innocent cover. Steganalysis is the science that can detect and extract hidden data. Many steganography and steganalysis tools exist, a lot of them are free which makes it easy for anyone to use these tools. In this paper, a comparative study will be done between two widely used steganography tools (StegHide and OurSecret) and between three steganalysis tools StegSpy, StegSecret and Hidden data detector.
Cite this article as:
BENAROUS Leila, DJOUDI Mohamed and BOURIDANE Ahmed, “A comparatives study of steganography and steganalysis tools”˝, Algerian Journal of Signals and Systems, Vol.1, Issue2, December 2016. pp:92-98.
| Visual Analysis and Recognition of Crowd Behavior by Principal Component Analysis | Hocine Chebi, Dalila Acheli, Mohamed Kesraoui |
The analysis of the human behavior from video is a wide field of the vision by computer. In this work, we are presenting mainly a new approach and method of detects behavior or abnormal events continuous of crowd in the case of the dangerous situations. These scenes are characterized by the presence of a great number of people in the camera’s field of vision. A major problem is the development of an autonomous approach for the management of a great number of anomalies which is almost impossible to carry out by operators. We present in this paper an approach for the anomalies detection, the visual sequences of the video are detected like behavior normal or abnormal based on the measurement and the extraction of the points by the optical flow, then calculations of the distance between the matrices of covariance of the distributions of the vectors of movement calculated on the consecutive reinforcements.
Cite this article as:
Hocine Chebi , Dalila Acheli and Mohamed Kesraoui, “Visual Analysis and Recognition of Crowd Behavior by Principal Component Analysis”, Algerian Journal of Signals and Systems, Vol.1, Issue2, December 2016. pp:99-108.
| Rectangular Antenna Array Optimization using Wind Driven Optimization | Abdelmadjid Recioui, Mondher Benabid, Nabil Djilani |
Antenna arrays are considered as important type used today for long distance communication with a very high gain. The design of such antenna depends on parameters and desired behavior performing the task, this project handle the application of a new type of nature-inspired global optimization methodology in the design of an optimized planar antenna array which ensures minimum side lobes and high directivity, this new optimization method is based on the atmospheric motion and it is known as Wind Driven Optimization (WDO) a population based iterative heuristic global optimization algorithm technique for multi-dimensional and multi-modal problems with the potential to implement constraints on the search domain. The optimal values obtained results in a good suppression of the side lobe level for the different antenna configurations with several sorts of excitation: Amplitude only, phase only, both amplitude and phase. Besides, the directivity is not worse than that of the uniform one.
Cite this article as:
Abdelmadjid Recioui, Mondher Benabid and Nabil Djilani, “Rectangular Antenna Array Optimization using Wind Driven Optimization”, Algerian Journal of Signals and Systems, Vol.1, Issue2, December 2016. pp:109-120.
| A New Model of Numerical MHO Distance Relay Associated with Power Swing Detector | Ayache MATI, Baadji BOUSAADIA Hamid BENTARZI |
In conventional transmission line protection, a distance relay is used to provide the primary as well as backup protection. The voltage and current phasors measurement needed by the distance relay for determining the impedance may be affected by the power disturbances such as power swing. Consequently, this power swing may cause mal-operation of Zone three distance relays which in turn may affect on the reliability of the whole protective scheme. Many power swing blocking functions (PSB) have been developed to mitigate these effects. In this paper, a new model of Mho distance relay with dual-quadrilateral power swing detection characteristic has been developed and implemented first in PC using LabVIEW, then tested using Power System Simulink Model under different faults and power swing conditions. Finally, the relay prototype has been realized using acquisition card NI USB-6009, which acquires real-time signals of the currents and the voltages, processes them digitally and outputs tripping or blocking signal to the circuit breaker. The obtained results show that the relay provides good discrimination between a fault and power swing condition.
Cite this article as:
Ayache MATI, Baadji BOUSAADIA and Hamid BENTARZI, “A New Model of Numerical MHO Distance Relay Associated with Power Swing Detector”, Algerian Journal of Signals and Systems, Vol.1, Issue2, December 2016. pp:121-128.
VOL2(2017)
VOL.2, Issue1(March 2017)
| Quality of energy resulting from association converter- machine for the electric drive of a system of wind generation | Ghania Aggoun, Naima Boubouzel, Rahma Kachenoura, Sid Ali Fellag |
The work presented in this paper concerns, the quality of energy negated with wind power system, we were interested initially to impact of the choice of the type of PWM control of the converters on the output quality of energy and we were interested to the feeding and controls of doubly fed induction generator (DFIG) and the contribution which it will be able to carry its application in a wind chain conversion. The modeling of DFIG was presented, thus we applied the vector control in active and reactive generator power. Then we are interested in cascades based on a DFIG and back-to-back converter. The results obtained with simulation allowed the performance evaluation of the application of the asynchronous machine double power supply in the wind field.
Cite this article as:
Ghania Aggoun, Naima Boubouzel, Rahma Kachenoura, Sid Ali Fellag, “Quality of energy resulting from association converter- machine for the electric drive of a system of wind generation”˝, Algerian Journal of Signals and Systems, Vol.2, Issue1, April 2017. pp:1-11.
| Analysis Study of Radar Probability of Detection for Fluctuating and Non-fluctuating Targets | Naceur AOUNALLAH, Ali KHALFA |
The radar analyst can develop and use mathematical and statistical techniques that lead to accurate prediction or adapting models for estimating the target detection performance. In radar detection theory, detection probability, false alarm probability, number of samples non-coherently integrated for a detection test, and signal-to-noise ratio (SNR) are closely interrelated. The present paper is intended to provide an overview of the calculations of radar probability of detection and its related parameters. The main methods and procedures for predicting the detection performance of either non-fluctuating or fluctuating targets are described. Performance’s analysis of the studied models is included, along with some graphical simulation examples.
Cite this article as:
Naceur AOUNALLAH, Ali KHALFA, “Analysis Study of Radar Probability of Detection for Fluctuating and Non-fluctuating Targets ˝, Algerian Journal of Signals and Systems, Vol.2, Issue1, April 2017. pp:12-20.
| Minimum time control of a two DOF robotic arm with noised measurements | El-H. Guechi, Y. Zennir L. Messikh M-L. Benloucif |
This paper presents a new approach for minimum time control dynamics of a two links manipulator robot in the case of noised outputs. Briefly, this technique consists of linearizing a nonlinear dynamic model of the robot by using a feedback linearization control. Once, the linear model has been obtained, a minimum time control with constraints, using the Pontryagin Minimum Principle will be developed. Here, the objective is to control the arm robot from an initial configuration to the final configuration in minimum time. The state variables are estimated by a Kalman-Luenberger observer. In order to show the efficiency of the proposed method, some simulation results are given.
Cite this article as:
El-H. Guechi , Y. Zennir , L. Messikh & M-L. Benloucif , “Minimum time control of a two DOF robotic arm with noised measurements ˝, Algerian Journal of Signals and Systems, Vol.2, Issue1, April 2017. pp:21-30.
| Performance comparison of some censoring CA-based CFAR processors in heterogeneous environments | B. Zattouta L. Messikh |
Performance comparison of automatic censoring CA-based CFAR processors contribute to the development of more efficient censoring detectors. In this paper, the authors analyze the performance of the detection schemes which named: ACCA-odv- (Automatic Censored Cell Averaging -ordered data variability-), ADCCA- (Automatic Dual Censoring Cell Averaging-), ACGCA- (Automatic Censoring Greatest Cell Averaging-), and GGDC- (Goodness-of-fit Generalized likelihood test with Dual Censoring-)-CFAR's in heterogeneous environments. The assumed environments are represented by three situations: first, the homogeneous situation, second, the presence of interfering targets, and the third case is allowed to the presence of clutter edges. The obtained results, under the assumption of a Gaussian clutter and a mono pulse processing, show that most of the studied detectors perform well in a specific conditions and there is a need to further developments to ensure the required performances for recent target detection application.
Cite this article as:
B. Zattouta and, L. Messikh, “Performance comparison of some censoring CA-based CFAR processors in heterogeneous environments ˝, Algerian Journal of Signals and Systems, Vol.2, Issue1, April 2017. pp:31-39.
| False Alarms Rate Reduction Using Filtered Monitoring Indices | M.Ammiche A.Kouadri |
False alarms are the major problem in fault detection when using multivariate statistical process monitoring such as principal component analysis (PCA), they affect the detection accuracy and lead to make wrong decisions about the process operation status. In this work, filtering the monitoring indices is proposed to enhance the detection by reducing the number of false alarms. The filters that were used are: Standard Median Filter (SMF), Improved Median Filter (IMF) and fuzzy logic based filter. Signal to Noise Ratio (SNR), False Alarms Rate (FAR) and the detection time of the fault were used as criteria to compare their performance and their filtering action influence on monitoring. The algorithms were applied to cement rotary kiln data; real data, to remove spikes and outliers on the monitoring indices of PCA, and then, the filtered signals were used to supervise the system. The results, in which the fuzzy logic based filter showed a satisfactory performance, are presented and discussed.
Cite this article as:
M.Ammiche and A.Kouadri, “False Alarms Rate Reduction Using Filtered Monitoring Indices ˝, Algerian Journal of Signals and Systems, Vol.2, Issue1, April 2017. pp:40-50.
| IMC Multi-Controller Strategies applied on a Manipulator Robot | Y. Zennir, E.Guechi L. Chetioui R. Bendib |
The paper focuses on the use of multi-controller approach to control a robot wrist (STÄUBLI robot RX 90). The descriptions of a nonlinear mathematical model of the process have been presented with the local parametric models around operating points. Controller design of a conventional PID, IMC control, LQG control and Hv (loop shaping) has been described around each selected operating points for each local parametric models. Finally , in order to show the efficiency of the proposed method, some simulation results in CAO 3D solid-works and MATLAB environments are given.
Cite this article as:
Y. Zennir, E.Guechi, L. Chetioui, R. Bendib, “IMC Multi-Controller Strategies applied on a Manipulator Robot ˝, Algerian Journal of Signals and Systems, Vol.2, Issue1, April 2017. pp:51-62.
VOL.2, Issue2(June 2017)
| Fault Diagnostic of Doubly-Fed Induction Generator in Stator Inter-Turn Short Circuit Based Wind Turbine | N. Boumalha, R. Hachelef, D. Kouchih, M. Tadjine and M.S. Boucherit |
This paper describes a Fault Tolerant Control (FTC) of a doubly-fed induction generator (DFIG) based wind turbine model suitable for the simulation of this generator in the mode faulty mode. The dynamic model of a DFIG with stator inter-turn short circuit fault is proposed. A model (abc) is developed, which can represent both the healthy and faulty conditions. The DFIG is directly connected to the grid whereas the rotor winding is fed by back-to-back PWM converters .the Control schemes for active and reactive power regulation are designed firstly. Under different wind speed, maximum power point tracing (MPPT) control is implemented to ensure the optimum active power output. The numerical simulation developed in Matlab/Simulink studies the effects of stator inter-turn short-circuit in the DFIG. Afterward, the application of Approach technique of Adaptive Obs
Cite this article as:
N. Boumalha, R. Hachelef, D. Kouchih, M. Tadjine and M.S. Boucherit, “Fault Diagnostic of Doubly-Fed Induction Generator in Stator Inter-Turn Short Circuit Based Wind Turbine˝, Algerian Journal of Signals and Systems, Vol.2, Issue2, June 2017. pp:63-74.
| Design of Standalone Micro-Grid Systems Using Teaching Learning Based Optimization | Abdelmadjid RECIOUI, Khaled DASSA |
Meeting the load demand reliably and efficiently is the most important issue of any electrical system. Installing huge off grid hybrid power systems to deliver enough power is economically unwise. Therefore, it is necessary to minimize the size and number of units of the off-grid power system components and operate the system under an appropriate power management strategy to ensure efficient system operation. The successfulness of installing an off grid power system in remote areas depends on the total net present cost occurs during the lifetime of the project. In this work, optimization of off grid power system component sizing is performed using two tools: Homer and a metaheuristic optimization method that has been recently developed, the Teaching Learning Based Optimization (TLBO).
Cite this article as:
Abdelmadjid RECIOUI and Khaled DASSA, “Design of Standalone Micro-Grid Systems Using Teaching Learning Based Optimization ˝, Algerian Journal of Signals and Systems, Vol.2, Issue2, June 2017. pp:75-85.
| Modeling and Diagnostic of Permanent Magnet Synchronous Machine under Insulation Failure Condition | Bouchareb Chourouk, Nait-Said Mohamed-Said, Lahmer Fethi |
One of the most frequent faults in PMSM stator is the turn-to-turn short-circuit fault. So, the aim of this paper is to present a dynamic model for PMSM with turn-to-turn short-circuit fault based on equivalent electric circuit model. Two simple and useful diagnostic techniques ESA an EPVA based on frequency analysis are applied to detect this kind of fault. The accuracy of diagnosis is based on adding the real waveform of back-EMF.
Cite this article as:
Bouchareb Chourouk,Nait-Said Mohamed-Said and Lahmer Fethi, “Modeling and Diagnostic of Permanent Magnet Synchronous Machine under Insulation Failure Condition ˝, Algerian Journal of Signals and Systems, Vol.2, Issue2, June 2017. pp:86-95.
| Light Flicker Frequencies in the HID lamps | Lakhdar Amer Messaoud Hamouda Chellali Benachiba. |
In order to reduce the electric consumption for high intensity discharge lamps (HID), the use of high frequencies electronic ballasts represents both a solution and many advantages such as, the decrease in the congestion, low costs and weak losses, approximately 10%. However it is not regarded as perfectly reliable, this is due in a great part to the appearance of Acoustic Resonances inside the arc tube which can result in low frequency light flicker and even lamp destruction. Experimentally we used a HID lamp of 50 W and we determined, light flicker frequencies and the arc motion frequencies using a photodiode which detects the light intensity fluctuation and a camera to record the arc motion. The experiment was done in the Department of Mechanical Engineering and Production, Hamburg University of Applied Sciences.
Cite this article as:
Lakhdar Amer, Messaoud Hamouda, Chellali Benachiba., “Light Flicker Frequencies in the HID lamps ˝, Algerian Journal of Signals and Systems, Vol.2, Issue2, June 2017. pp:96-101.
| Optimal placement of power factor correction capacitors in power systems using Teaching Learning Based Optimization | Mouloud Bouaraki, Abdelmadjid Recioui |
This paper presents a method to optimize the placement of capacitors in a distribution system to correct power factor and reduce losses and costs. The method uses the Teaching Learning Based Optimization (TLBO) method to solve the optimal capacitor placement problem. The combinatorial nature of the problem suggests the employment of a mixed binary and real valued TLBO algorithm. To validate the efficiency of the method, it was applied to various examples (different bus systems) and simulation results are discussed.
Cite this article as:
Mouloud Bouaraki and Abdelmadjid Recioui, “Optimal placement of power factor correction capacitors in power systems using Teaching Learning Based Optimization ˝, Algerian Journal of Signals and Systems, Vol.2, Issue2, June 2017. pp:102-109
| DVR and D-STATCOM Mitigation Techniques of Power Quality Effects on Induction Motors | Fatma Zohra DEKHANDJI Mohamed DOUCHE Nacer ZEBIDI |
Power quality disturbances have always been a major concern among engineers. Any slight variation in voltage amplitude or frequency can cause customer equipment to fail, at a substantial cost in time and money.In this project we will use some mitigation techniques to protect the induction motor from excessive temperature (additional losses and high currents) and the rotor vibration torque pulsation caused by power quality disturbances.These mitigation techniques reduce the effects of the power quality disturbances on the induction motor, where the simulations done using MATLAB/SIMULINK.
Cite this article as:
Fatma Zohra DEKHANDJI, Mohamed DOUCHE and Nacer ZEBIDI, “DVR and D-STATCOM Mitigation Techniques of Power Quality Effects on Induction Motors ˝, Algerian Journal of Signals and Systems, Vol.2, Issue2, June 2017. pp:110-129.
VOL.2, Issue3(September 2017)
| Induction Motor Faults Detection Using a Statistical Procedure Based-Approach | Kouadri A., Kheldoun A., Hamadache M., Refoufi L. |
This paper presents the application of a new technique based on the variance of three phase stator currents’ instantaneous variance (VIV-TPSC) to detect faults in induction motors. The proposed fault detection algorithm is based on computation of the confidence interval index (CI) at different load conditions. This index provides an estimate of the amount of error in the considered data and determines the accuracy of the computed statistical estimates. The algorithm offers the advantage of being able to detect faults, particularly broken rotor bars, independently of loading conditions. Moreover, the implementation of the algorithm requires only the calculation of the variance of the measured three-phase stator currents’ instantaneous variance. The discrimination between faulty and healthy operations is based on the adherence of VIV-TPSC value to the CI which is calculated after checking out that the variance of instantaneous variance is a random variable obeying to normal distribution law. Rotor and stator resistance values are not used in any part of the CI and VIV-TPSC calculations, giving the algorithm more robustness. The effectiveness and the accuracy of the proposed approach are shown under different faulty operations.
Cite this article as:
Kouadri A., Kheldoun A., Hamadache M., Refoufi L, “Induction Motor Faults Detection Using a Statistical Procedure Based-Approach ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 3, September 2017. pp:130-139.
| Design and Simulation of a WDM-OADM Optical Ring Communication System | A. ZITOUNI A. RECIOUI A. SICHONE A. SENOUSSAOUI |
The advent of nodal elements, such as Optical Add/Drop Multiplexers (OADM) for Wavelength Division Multiplexed (WDM) networks, has led to a myriad of possible network architectures for the optical layer. In this project we design and simulate a WDM-OADM optical ring system of four nodes, two wavelengths on unidirectional single mode fiber at data rates of up to 10 Gbps. We use a continuous wave laser as a source for each channel with external modulation. The performance of the system is reported on the basis of eye diagram, Bit Error Rate (BER) and Q-factor. Optisystem software is used to simulate the overall designed system.
Cite this article as:
A. ZITOUNI, A. RECIOUI, A. SICHONE and A. SENOUSSAOUI, “Design and Simulation of a WDM-OADM Optical Ring Communication System ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 3, September 2017. pp:140-148.
| Fault Detection in Wide Area Monitoring Systems via PMU Optimal Placement | Abdelmadjid RECIOUI Mohamed TAZIBT Hakim BENHENNI |
The Phasor measurement units (PMUs) have become more and more attractive in power engineering as they can provide synchronized measurements of real-time voltage and currents phasors. The objective of this work is twofold: first, the optimal placement of PMUs is done in the standardized IEEE systems. Next, fault location is determined based on the measurements collected from these PMUs. The simulations are carried out using MATLAB SIMULINK. The results show that it is possible to exploit the PMU measurement data to locate and hence cure the faults in the power system.
Cite this article as:
Abdelmadjid RECIOUI, Mohamed TAZIBT and Hakim BENHENNI, “Fault Detection in Wide Area Monitoring Systems via PMU Optimal Placement ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 3, September 2017. pp:149-161.
| A review on Data communication in smart grids | Afaf Saoud Abdelmadjid Recioui |
Smart Grids require a complex two-way communication infrastructure, sustaining power flows between intelligent components, and sophisticated computing and information technologies, as well as business applications. Data will flow over generation, transmission, distribution, and user networks in the SG. The amount of data generated by smart devices will experience explosive growth in the future. This tremendous data amount places considerable load on the communications infrastructure of the SG. This paper highlights a review on the smart grid focusing on the communication infrastructure and the data issues. A scan of the most contributions relevant to the topic is presented. The key opportunities and challenges of the communication part of the smart grid are presented for further research.
Cite this article as:
Afaf Saoud and Abdelmadjid Recioui, “A review on Data communication in smart grids ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 3, September 2017. pp:162-179.
| Function Block for Rotary Kiln Coating Disintegration Detection | Abderazak Bensmail Abdelmalek Kouadri |
Condition monitoring is an important field that can boost manufacturing processes to produce high quality and more quantities. This work presents the design of new Programmable Logic Controller (PLC) Function Block (FB) dedicated to the instantaneous detection of any coating piece disintegration from the wall coating formed by the processed material sticking naturally on the inner side of the cement rotary kiln. The detection is based on the on-line analysis of the kiln spinning electrical motor’s signal. The FB makes use of differences between the adjacent signal’s measurements values and logic functions to hide false alarms for the user whenever they break out due to kiln velocity set point abrupt changes. In steady state process operation, the technique provides highly reliable and accurate detection. Its application can be extended to any similar instantaneous abrupt changes occurring in other manufacturing processes.
Cite this article as:
Abderazak Bensmail and Abdelmalek Kouadri, “Function Block for Rotary Kiln Coating Disintegration Detection ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 3, September 2017. pp:180-188.
VOL.2, Issue4(December 2017)
| Reliability modelling using Weibull distribution on real-time system in oil drilling installations | Mohamed Ben Rahmoune, Mouloud Guemana , Ahmed Hafaifa |
Recently, reliability has become a key parameter of quality and decision support, covering many aspects, such as failure analysis systems. A reliability analysis is essential for the study of operating safety in industrial systems. In this paper, we summarised evaluation methods and real-time reliability analyses. This work proposes solutions to real-time reliability modelling, as applied to an industrial pump. The model will be used to increase the lifespan of the equipment, to help develop suitable maintenance plans and to assign a probability to good operating system examined to choose the best dedicated industrial pump technology solutions
Cite this article as:
Mohamed Ben Rahmoune, Mouloud Guemana and Ahmed Hafaifa, “Reliability modelling using Weibull distribution on real-time system in oil drilling installations ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:189-198.
| Dependability Measures Estimation Using Binomial Failure Rate Model | Mourad CHEBIL Fares INNAL |
Dependability of multi-component systems is highly impacted by common cause failures, what necessitates the appropriate consideration of such events in the dependability modeling process. This paper is dedicated to study the application of the binomial failure rate model in handling the contribution of common cause failures to estimate two key dependability indicators, namely: unavailability and unconditional failure intensity, using fault tree analysis with the probabilistic treatment of the associated parameter uncertainty. The results of such application are thoroughly compared to those of the traditional Beta factor model to highlight the possible differences.
Cite this article as:
Mourad CHEBILA and Fares INNAL, “Dependability Measures Estimation Using Binomial Failure Rate Model ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:199-206.
| Control Of Mobile Robot Navigation Under The Virtual World Matlab-Gazebo | BENSACI Chaima, ZENNIR Youcef, POMORSKI Denis |
In this paper, we present our navigation control approach of a mobile robot (Turtlebot 2 robot) based on the stability Lyapunov function; our mobile robot is composed of two differential wheels. The kinematic model of the robot is presented followed by the description of the control approach. A 3D simulation under the Gazebo software is developed in interaction with the kinematic model and the control approach under MATLAB-SIMULINK software. The purpose of this study is to carry out an autonomous navigation; we initially planned different trajectories then we tried to be followed them by the robot. Our navigation strategy based on its odometry information, based on robot position and orientation errors; Velocity commands are sent for the robot to follow the chosen path. Different simulations were performed in 2D and 3D and the results obtained are presented followed by the envisaged future work.
Cite this article as:
BENSACI Chaima, ZENNIR Youcef, POMORSKI Denis, “Control Of Mobile Robot Navigation Under The Virtual World Matlab-Gazebo˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:207-217.
| Robust Sliding Mode Control for Novel Type of Parallel Robot | Fouad INEL Youcef ZENNIR |
In this paper we present a new control architecture based on the robust sliding mode control applied to control a nonlinear system (parallel cable robot). This approach is widely used to address the uncertainties and disturbances of nonlinear systems and to improve the performance of the robot in terms of tracking a desired path. A dynamic model is presented followed by the description of the control approach used. To do this, numerical simulations were carried out by developing a specific code including a graphical user interface for a user-friendly real time. The simulation results for a dynamic model with sliding mode control are discussed for different trajectories applied to this robot, to confirm the validity of accurate tracking of a desired path before future work description.
Cite this article as:
ouad INEL and Youcef ZENNIR, “Robust Sliding Mode Control for Novel Type of Parallel Robot ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:218-227.
| Robust Fuzzy Path Tracking Control of a Platooning Vehicles | Sami ALLOU, Youcef ZENNIR |
The paper present our control approach based in fuzzy controller for platooning vehicles. this approach based to control lateral and longitudinal movement of vehicles in different navigation trajectory. kinematic model of vehicles are described follows by describe of controller design. The communication is provided between vehicles with exchange information, speed and orientation angle with a fixed safety distance between vehicles. 3D simulation developed with matlab, Simulink and v-rep software were carried . Different reference trajectory are used to compared and approve our approach. The simulation results illustrate the efficiency of our control design and open the perspectives for future work.
Cite this article as:
Sami ALLOU and Youcef ZENNIR, “Robust Fuzzy Path Tracking Control of a Platooning Vehicles ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:228-239
| Optimization of the Membership Functions for a Fuzzy Controller Using an Improved Genetic Algorithms | Riad BENDIB, Noual BATOUT, Hamid BENTARZI |
Fuzzy control is a practical alternative for a variety of challenging control applications since it provides a convenient method for constructing nonlinear controllers via the use of heuristic information; this is done through the application of the techniques that use human judgment and experience rather than precise mathematical models. However, obtaining an optimal set of fuzzy membership functions (i.e. transferring the operator experience) is not an easy task. Different ways are suggested to deal with this problem. In this paper, we will use a powerful tool based on genetic algorithm to design a fuzzy logic controller that is used as a supervisor of PID controller that is the fuzzy controller is used to tune the PID controller for a feed water of a steam generation system. The simulation results show that the proposed technique is very useful to get an effective control action for the system.
Cite this article as:
Riad BENDIB, Noual BATOUT, Hamid BENTARZI, “Optimization of the Membership Functions for a Fuzzy Controller Using an Improved Genetic Algorithms ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:240-247
| Design of Effective Control Schemes for Binary Distillation Columns | Riad BENDIB, Noual BATOUT, Abdelmajid KHELASSI |
Distillation column is very important and high consuming energy equipment in oil refineries, such that 3% of the energy consumption in the world is allocated in distillation column. The fact that let controlling the distillation column an attractive field for researcher, and hence different control schemes are proposed by researchers. In this paper we will provide a comparative study between different control schemes for a binary distillation column two simple configurations (the most known ones) (LV&DV) and two more complicated ones ((L/D,V/B) & Ryskamp’s) we compare them in the basis of interactions and disturbance propagation. The mathematical models for the material balance configurations for the considered configurations are deduced using mathematical transformations (in the paper the general case of transformation between any two configurations is presented), taking the conventional configuration (LV) as a based configuration, the Dynamic Relative Magnitude Criterion (DRMC) is used to assess the interactions and disturbance propagation. The results show that the ratios control schemes are less sensitive to interactions compared with energy balance configuration LV. The same was noticed with DV configuration however other process drawbacks let it not recommended in industrial field.
Cite this article as:
Riad BENDIB, Noual BATOUT, Abdelmajid KHELASSI, “Design of Effective Control Schemes for Binary Distillation Columns ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:248-254
| Automated depandability analysis of the HDPE Reactor using D-higraphs HAZOP assistant | El-Arkam MECHHOUD, Manuel RODRIGUEZ, Youcef ZENNIR |
In this paper we present a HAZOP Assistant based on D-higraphs and dedicated to a functional modeling technique that gathers functional and structural information of the process under study. This work is applied to the study of an industrial case - High Density Polyethylene reactor part of the CP2K plant situated in the petrochemical platform of Skikda- and its results are compared with the conventional HAZOP study and SADT method.
Cite this article as:
El-Arkam MECHHOUD, Manuel RODRIGUEZ, Youcef ZENNIR, “Automated depandability analysis of the HDPE Reactor using D-higraphs HAZOP assistant ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:255-265
| Rotor Speed and Flux Estimation of a Doubly-fed Induction Machine Using Extended Kalman Filter | Ahmad Boussoufa, Madjid Kidouche, Aimad Ahriche |
This paper uses Extended Kalman Filtering method (EKF) to estimate the rotor speed and flux of a Doubly-fed Induction Generator (DFIG) to be used in Wind Turbines (WTs). DFIGs are widely used in WTs because they can generate an electric power of constant voltage amplitude and frequency which allow a direct connection between the WTs and the ac power network. A DFIG modeling in the (dq) reference frame is presented and a brief description of EKF algorithm is described to estimate the rotor speed and flux. Simulations results are shown and discussed.
Cite this article as:
Ahmad Boussoufa, Madjid Kidouche, Aimad Ahriche, “Rotor Speed and Flux Estimation of a Doubly-fed Induction Machine Using Extended Kalman Filter ˝, Algerian Journal of Signals and Systems, Vol.2, Issue 4, December 2017. pp:266-273.
VOL3(2018)
VOL.3, Issue1(March 2018)
| PLC-Based Safety Instrumented System of a Boiler using HAZOP | Mahfoud CHAFAI Abderrahmane OUADI Hamid BENTARZI |
HAZOP Analysis is used to determine great deviations which will affect the operational safety of a boiler of an existing petrochemical plant that may affect on persons, material and the environment. PLC is proposed to provide the safety function to fit into the overall machine control system as a safety-related part. It reads from the temperature, pressure sensors via its input interface modules and outputs commands in the case of critical deviation via the output module to the final control elements such as actuators allowing an improvement in the safety of the overall boiler system.
Cite this article as:
Mahfoud CHAFAI, Abderrahmane OUADI and Hamid BENTARZI, “PLC-Based Safety Instrumented System of a Boiler using HAZOP ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 1, March 2018. pp:1-9.
| Concentric Ring Arrays Optimization Using the Spiral Inspired Technique | Abdelmadjid Recioui |
In this work, concentric ring Arrays (CRA) with non-uniform excitation are investigated, with the objective being to minimize the Sidelobe Level (SLL) for the array and keep the Directivity within an acceptable value. The optimization technique to be used to reach this objective is the spiral inspired optimization technique.. First, the technique is used to minimize the SLL only. Next the array factor is optimized for Directivity only. Then, the excitation is varied for both SLL and Directivity to be optimized. The results show significant improvements with respect to the uniform case, especially for SLL reduction, with different levels of success depending on the employed optimization technique, fitness function, varied parameters, and array size..
Cite this article as:
Abdelmadjid Recioui, “Concentric Ring Arrays Optimization Using the Spiral Inspired Technique ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 1, March 2018. pp:10-21.
| Optimal PSO- PIλDμ Multi -Controller for a Robotic Wrist | Youcef ZENNIR, El-Arkam MECHHOUD, Ahcene SEBOUI, Riad BENDIB |
Comparative study between to approach of control based in conventional PID controller and robust Fractional PID controller (FOPID) using PSO algorithm applied to control robotics wrist (Robot RX-90 Staübli). The mathematic model of robot are described follows by design of architecture control. two approximation method of fractional order are used and finally a different simulation study comparative between (PID, PSO-PID, FOPID and PSO-FOPID) with obtained results has been presented discussed and approved the efficiently of the architecture control with PSO-FOPID controller followed by a conclusion and some perspectives for future work.
Cite this article as:
Youcef ZENNIR , El-Arkam MECHHOUD , Ahcene SEBOUI, Riad BENDIB, “Optimal PSO- PIλDμ Multi -Controller for a Robotic Wrist ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 1, March 2018. pp:22-34.
| Improvement of an Adaptive Threshold Technique for Fault Detection in a Cement Rotary Kiln | Abdelmalek Kouadri, Boualem Ikhlef, Abderazak Bensmail |
In this paper, we suggest to use a two-dimensional plot characterizing the statistical variability of a large-sized multivariate data. This graphical representation is based on the mean and variance values. The two statistical parameters plot is used to assess fault detection performances in a cement rotary kiln system. The adaptive threshold technique is shown to result in more accurate and reliable detection. The threshold is established through several repeated experiments under the healthy mode with the same operating conditions. An adequate statistical test is used to examine the validity of the adaptive threshold estimation approach. At each mean’s subinterval for all experiments, a confidence interval closely linked to the distribution frequencies of the variance as a random variable is obtained. In addition, several significance levels are considered to show the performances of the proposed adaptive thresholding technique compared to the limitations of the fixed threshold through the rate of false alarms. Two different experimental faults are considered to demonstrate the effectiveness and accuracy of the adaptive threshold in terms of no false alarms and negligibly small missed alarms in comparison to the fixed threshold technique.
Cite this article as:
Abdelmalek Kouadri, Boualem Ikhlef, Abderazak Bensmail, “Improvement of an Adaptive Threshold Technique for Fault Detection in a Cement Rotary Kiln ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 1, March 2018. pp:35-43.
| Multi-model system design using H∝ Multi-controllers for a robotic wrist | Youcef ZENNIR, Mohand Said LARABI Elhadi GUECH Salah Eddine REZIG |
In this paper we present a novel approach of multi-model system design used multi-controllers of Hv control type applied to control robotic wrist. we have presented modeling of our system( nonlinear and linear model) follows by the principal of our approach of control. we have presented Hv control principal used for control nonlinear system and linear local models around each operating points choose . Different simulations are realized in matlab-simulink software improve efficiency of our approach. Finally we have presented conclusion and discussed of obtained results followed by some perspectives for future work
Cite this article as:
Youcef ZENNIR, Mohand Said LARABI, Elhadi GUECH,Salah Eddine REZIG, “Multi-model system design using H∝ Multi-controllers for a robotic wrist ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 1, March 2018. pp:44-53.
VOL.3, Issue2(June 2018)
| Sensorless Speed and Reactive Power Control of a Double-Feed Induction Generator using Adaptive Observer in Wind Turbine Power Plant | Noureddine Boumalha Djillali Kouchih Mohamed Seghir Boucherit |
This work presents a new method for the synthesis of a sensorless speed and reactive power control applied to a wind turbine system based to a Doubly Fed Induction Generator (DFIG). The proposed method based on adaptive observers: The rotor speed is adapted using adaptation mechanisms. Stability analysis based on Lyapunov theory is used to guarantee the stability of the observer. To verify the consistency of the proposed approach. We will be interested in the study of vector control based on the synthesis of classical controllers. Simulation results provided with the MATLAB/SIMULINK environment show the consistency of the proposed approaches.
Cite this article as:
Noureddine Boumalha,Djillali Kouchih, Mohamed Seghir Boucherit, “Sensorless Speed and Reactive Power Control of a Double-Feed Induction Generator using Adaptive Observer in Wind Turbine Power Plant ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 2, June 2018. pp:54-64.
| Impact of NBTI Stress on VDMOSFET Regions | Sidi Mohammed Merah Bouchra Nadji |
In this paper, we investigate the impact of negative bias temperature instability (NBTI) degradation on both channel and drain regions, of commercial power double diffused MOS transistor (VDMOSFET), using capacitance-voltage method (C-V). We report that the degradation is important at channel (drain) region in p-channel VDMOSFET (n-channel VDMOSFET). That means that the phosphorus doped region (n-type) is more sensitive to NBTI stress.
Cite this article as:
Sidi Mohammed Merah, Bouchra Nadji, “Impact of NBTI Stress on VDMOSFET Regions ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 2, June 2018. pp:65-69.
| Analysing Primary Signal Sensing Test in Cognitive Radio Networks Using an Alpha-Beta Filter and a Neyman-Pearson Detector | Haroun Errachid Adardour Samir Kameche |
The signal strength sensing in the context of cognitive radio networks (CRNs), is very important to predict the primary signal of base station (PBS), particularly when the secondary user (SU) is in a congested environment, and also when is in motion towards the end of coverage of PBS. However, this article presents an analysis on the prediction of primary signal strength in CRNs using an Alpha-Beta Filter (ABF) and a Neyman-Pearson Detector (NPD). The challenge of this contribution is based on a realistic sensing of primary signal strength and to do that, we have assumed that the reporting channels between the SU and the PBS are composited with the shadowing and multipath fading (SMF), and the receiver noise has also added. In this regard, the obtained results were discussed through: the signal-to-noise ratio (SNR) uncertainty, the detection probability (PD) and the False Alarm Probability (PFA), where the average relative error of prediction for the PD will be equal to10-5..
Cite this article as:
Haroun Errachid Adardour, Samir Kameche, “Analysing Primary Signal Sensing Test in Cognitive Radio Networks Using an Alpha-Beta Filter and a Neyman-Pearson Detector ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 2, June 2018. pp:70-80.
| High Precision Roll/Yaw Attitude Stabilization for Flexible communication satellite | J. E Benmansour b. Khouane R. Rima |
The aim of this paper is to realize high-precision attitude stabilization for roll/yaw axes of flexible communication satellite while attenuate the effects of the elastic vibrations and multiple disturbances such as solar radiation and model uncertainties. a composite control has been designed which is comprise two part an anti-disturbance proportional-derivative (PD) controller is designed to stabilize the attitude while rejecting the effects of flexible vibrations, environmental disturbances, and unmodelled dynamics, whose are assumed as an extended state. This controller comprises two parts, i.e. an extended state observer and a PD controller with feedforward. First, flexible vibrations, environmental disturbances and unmodelled dynamics are regarded as an extended state, which can be estimated by the proposed observer. The estimated extended state can be compensated by feedforward where the attitude can be stabilized by the PD controller. Numerical simulation results are presented to demonstrate the effectiveness of the control scheme.
Cite this article as:
J. E Benmansour, b. Khouane, R. Rima, “High Precision Roll/Yaw Attitude Stabilization for Flexible communication satellite ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 2, June 2018. pp:81-88.
| Humanoid Robot, What is missing? | Hadjira BELAIDI Hamid BENTARZI |
A humanoid robot is now a reality, which has been very developed. It can do almost all tasks that either the human can do or not as well as the dangerous tasks. The researchers recently develop robots, which can see, smell, smile, speak, touch, walk and talk using the more advanced technological tools such as computer aided design. However, these humanoid robots cannot react as human, so what is missing?, what is about the spirit? Does robot have the spirit? This paper answers these questions and presents imperfection of humanoid robot.
Cite this article as:
Hadjira BELAIDI and Hamid BENTARZI, “Humanoid Robot, What is missing? ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 2, June 2018. pp:89-95.
VOL.3, Issue3(September 2018)
| Three-phase Three-level Inverter Grid-tied PV System with Fuzzy Logic Control based MPPT | Yacine AYACHI AMOR Farid HAMOUDI Aissa KHELDOUN |
This paper presents a three phase single stage grid connected photovoltaic PV system. Maximum power transfer from the solar array to grid is ensured by using fuzzy logic (FL) based maximum power point tracking (MPPT) controller. The proposed MPPT technique provides fast and high performances under variable climate conditions as well as sudden variation of irradiance level. Change of measured photovoltaic power and its rate of change are the input variables of the proposed fuzzy logic controller while the change in reference current is defined as the output variable. In order to meet the power quality required by the international standards, a Space Vector Modulation (SVM) controlled three-level T-type inverter and a series LCL filter are used. To show the effectiveness of the proposed grid-connected system, Matlab/Simulink software is used to carry out the simulation part. Obtained results show the role of each component, particularly the response of the maximum power tracking, the quality of the injected power, the unity power factor operation and the system’s efficiency.
Cite this article as:
Yacine AYACHI AMOR, Farid HAMOUDI, Aissa KHELDOUN, “Three-phase Three-level Inverter Grid-tied PV System with Fuzzy Logic Control based MPPT˝, Algerian Journal of Signals and Systems, Vol.3, Issue 3, September 2018. pp:96-105.
| Broken Rotor Bars Fault Detection Based on Envelope Analysis Spectrum and Neural Network in Induction Motors | Saddam BENSAOUCHA Sid Ahmed BESSEDIK Aissa AMEUR Abdellatif SEGHIOUR |
In this paper, a study has presented the performance of a neural networks technique to detect the broken rotor bars (BRBs) fault in induction motors (IMs). In this context, the fast Fourier transform (FFT) applied on Hilbert modulus obtained via the stator current signal has been used as a diagnostic signal to replace the FFT classic, the characteristics frequency are selected from the Hilbert modulus spectrum, in addition, the different load conditions are used as three inputs data for the neural networks. The efficiency of the proposed method is verified by simulation in MATLAB environment..
Cite this article as:
Saddam BENSAOUCHA, Sid Ahmed BESSEDIK,Aissa AMEUR,Abdellatif SEGHIOUR, “Broken Rotor Bars Fault Detection Based on Envelope Analysis Spectrum and Neural Network in Induction Motors ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 3, September 2018. pp:106-116.
| Emulation of metamaterial waveguides | Khedidja BOURAS Abdelhadi LABIAD Chaker SALEH Mouloud BOUZOUAD |
In this work, we are interested by emulating metamaterial microwave waveguides which behave like conventional metallic ones. We use metamaterial layers based on two types of unit cells. The first one is a connected cross type unit cell which leads to a metamaterial with a near zero refraction index (n1≈ 0). The second one is a disconnected cross type unit cell which leads to a metamaterial with a refraction index greater than unity (n2 >1). With these two type of metamaterials we can define, in the metamaterial layer, different sections each one can have a refraction index equal to n1 or n2. Using these metamaterial layers we can build a metamaterial waveguide. This latter is obtained by stacking a number of layers. The waveguide is obtained by selecting an inner section with a refraction index n2 and an outer section with a refraction index n1 close to zero which plays a similar role as a metallic reflector to form the waveguide.
Cite this article as:
Khedidja BOURAS, Abdelhadi LABIAD,Chaker SALEH, Mouloud BOUZOUAD, “Emulation of metamaterial waveguides ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 3, September 2018. pp:117-124.
| Combining MUSIC Spatial Sampling and Bootstrap to Estimate Closed Space DOA for Few Samples | SIDI MOHAMMED HADJ IRID KAMECHE SAMIR |
DOA estimation in array processing uses MUSIC (Multiple Signal Classification) algorithm, mainly. It’s the most investigated technique and is very attractive because of its simplicity. However, it meets drawbacks and fails when only very few samples are available and the sources are very close or highly correlated. In these conditions, the problem is more intricate and the detection of targets becomes arduous. To overcome these problems, a new algorithm is developed in this paper. We combine bootstrap technique to increase sample size, spatial sampling and MUSIC method to improve resolution. Through different simulations, the performance and the effectiveness of the proposed approach, referred as spatial Sampling and Bootstrapped technique ‘’SSBoot’’, are demonstrated.
Cite this article as:
SIDI MOHAMMED HADJ IRID, KAMECHE SAMIR, “Combining MUSIC Spatial Sampling and Bootstrap to Estimate Closed Space DOA for Few Samples ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 3, September 2018. pp:125-132.
| Nonlinear Backstepping Control of Permanent Magnet Synchronous Motor with Rotor Speed and Position Estimation | Abderrahmen KIRAD Said Grouni,Omar MECHALI |
This paper presents a nonlinear backstepping control strategy used to ensure good dynamic behavior, high performance and the stability of the permanent magnet synchronous motor (PMSM). However, this control requires the precise knowledge of certain variables (speed, torque and position) that are difficult to access or sensors require additional mounting space, reduce reliability, increase the cost of the engine, and make maintenance difficult. Thus, an Extended Kalman Filter (EKF) approach is proposed for the estimation of speed and rotor position in the PMSM. The interesting simulation results obtained which are subjected to the load perturbation show very well the efficiency and the good performance of the nonlinear feedback control proposed and simulated in Matlab-Simulink.
Cite this article as:
Abderrahmen KIRAD, Said Grouni,Omar MECHALI, “Nonlinear Backstepping Control of Permanent Magnet Synchronous Motor with Rotor Speed and Position Estimation ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 3, September 2018. pp:133-142.
| Diagnosis of the Induction Machine Using Advanced Signal Processing Methods | Abdelghani CHAHMI |
This work is a part of the thematic of monitoring and fault diagnosis of the squirrel cage three-phase induction machine. The choice of this type of machine is justified by the growing success it has exhibited, mainly, in the electric drives with variable speed. Signal based detection methods are presented is validated in simulation. The proposed diagnosis approach requires only little experimental data, and more importantly it provides efficient simulation tools that allow characterizing faulty behavior.In this study, the proposed approach considers the value of rotor resistance as fixed for condition monitoring. This value in the diagnostic tools which one uses is not fixed contrary to the classical approaches of control of machine.
Cite this article as:
Abdelghani CHAHMI, “Diagnosis of the Induction Machine Using Advanced Signal Processing Methods ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 3, September 2018. pp:143-150.
VOL.3, Issue4(December 2018)
| TCR Antenna For Small Satellite Application | Z. KOURDI O. KARA ALI |
The results of this study are interesting about antenna technology generation used in small satellite. A new design optimized of the TCR (tracking, command and ranging) antenna has been presented. It has a good impedance matching to the 50 Ohm coaxial line which has been radically enhanced with different geometric features. For the Ku band frequency band, the VSWR of 1.15 is not exceeded. In its optimized version, it is compact and aesthetic and this property reduces antenna distortions. Design considerations for this antenna performance in terms of coverage gain, side lobe isolation, and cross-polar isolation are discussed. The paper also discusses the possibilities of extending the frequency coverage of the antenna system into the Ku-band system can increase the capabilities and operational flexibility of existing earth stations as well as adapts with new current and future technology trends are presented.
Cite this article as:
Z. KOURDI and O. KARA ALI, “TCR Antenna For Small Satellite Application˝, Algerian Journal of Signals and Systems, Vol.3, Issue 4, December 2018. pp:151-155.
| Remaining useful life prediction of cutting tools using wavelet packet transform and extreme learning machine | S. Laddada T. Benkedjouh M. O. Si- Chaib R. Drai |
Online tool wear prediction is a determining factor to the success of smart manufacturing operations. The implementation of sensors based Prognostic and Health Management (PHM) system plays an important role in estimating Remaining Useful Life (RUL) of cutting tools and optimizing the usage of Computer Numerically Controlled (CNC) machines. The present paper deals with health assessment and RUL estimation of the cutting tool machines based on Wavelet Packet Transform (WPT) and Extreme Learning Machine (ELM). This approach is done in two phases: a learning (offline) phase and a testing (online) phase. During the first phase, the WPT is used to extract the relevant features of raw data computed in the form of nodes energy. The extracted features are then fed to the learning algorithm ELM in order to build an offline model. In the online phase, the constructed model is exploited for assessing and predicting the RUL of cutting tool. The main idea is that ELM involves nonlinear regression in a high dimensional feature space for mapping the input data via a nonlinear function to build a prognostics model. The method was applied to real world data gathered during several cuts of a milling CNC tool. The performance of the proposed method is evaluated through the accuracy metric. Results showed the significance performances achieved by the WPT and ELM for early detection and accurate prediction of the monitored cutting tools.
Cite this article as:
S. Laddada, T. Benkedjouh, M. O. Si- Chaib and R. Drai, “Remaining useful life prediction of cutting tools using wavelet packet transform and extreme learning machine ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 4, December 2018. pp:156-165.
| Contribution to the Exploitation of Artificial Intelligence in the Domain of Maintenance Diagnosis | Fouad INEL |
Increasing the performance of production units becomes a complex task from the technical point of view, especially when it comes to ensuring the availability and continuity of production systems where maintenance plays a fundamental role; it consists of checking and ensuring permanent monitoring of the installations of these systems. This operation requires continuous and high-level training of the operators, in order to overcome this limit, we call upon the field of artificial intelligence and expert systems. The basic idea of this work is the study of the contribution of expert systems in maintenance. It is a matter of synthesizing, from a bibliographic study, a logic to allow integrating the expert systems of diagnosis of breakdowns and dysfunctions in the maintenance of the systems of production; this last expert systems gives the better performance concerning the settling time and it’s always taken
Cite this article as:
Fouad INEL, “Contribution to the Exploitation of Artificial Intelligence in the Domain of Maintenance Diagnosis ˝, Algerian Journal of Signals and Systems, Vol.3, Issue 4, December 2018. pp:166-173.
| Analog Filter Design: A Succinct Investigation | Abdelmadjid RECIOUI Fatma Zohra HAMRIOUI Kenza BENAMROUCHE Oussama MERABET |
In many systems, it is essential to extract or enhance the desired information and remove the unwanted components. This is the simplest aim of signal processing where the filter turns out to be the key element. The objective of this paper is to investigate the characteristics of analog passive and active filters. Particularly, the interest goes to the conventional Butterworth, Chebychev and Bessel filter. A comparative study of these filters is done. The different circuits are simulated using the MULTISIM software to visualize the magnitude and phase responses. The procedure of designing the different filters is presented so that it can be used in any application.
Cite this article as:
Abdelmadjid RECIOUI, Fatma Zohra HAMRIOUI, Kenza BENAMROUCHE, Oussama MERABET, “Analog Filter Design: A Succinct Investigation˝, Algerian Journal of Signals and Systems, Vol.3, Issue 4, December 2018. pp:174-189.
| Mathematical Method for Parameters Calculation of electric Characteristic of Photovoltaic Module | B. Benabdelkrim A. Benatillah |
The study of photovoltaic systems (PV) in an efficient manner requires a precise knowledge of the I-V characteristic curves of PV modules. An accurate current-voltage (I-V) model of PV modules is inherently implicit and non-linear and calls for iterative computations to obtain an analytical expression of current as a function of voltage. In this paper, numerical approaches are proposed to forecast the PV modules performance for engineering applications. The proposed approaches were implemented in a Matlab script and the results have been compared with the datasheet values provided by manufacturers in standard test conditions (STC). These approaches permit to extract the unknown parameters and also allow quantifying the effects of module temperature and irradiance on key cells parameters. In this work, a comparative study of the performance characteristics for different modules thin films and solid is analyzed by a single-diode equivalent circuit using four- and five-parameter models and two diode model.
Cite this article as:
B. Benabdelkrim and A. Benatillah, “Mathematical Method for Parameters Calculation of electric Characteristic of Photovoltaic Module˝, Algerian Journal of Signals and Systems, Vol.3, Issue 4, December 2018. pp:190-200.
VOL4(2019)
VOL.4, Issue1(June 2019)
| PMU Optimal Placement in Wide Area Monitoring Systems using Grey Wolf Optimization technique | Y. AZZOUGUI A. RECIOUI A. MANSOURI |
Wide area monitoring system requires the integration of an advanced technology that provides real time synchronized phase angle measurements at all their measurement points. The phasor measurement units are the most advanced devices to achieve that. The objective of this work is first, to find the optimal placement of a minimum number of PMUs in some standardized IEEE systems. Next, the same method was applied to the Algerian 63 bus system. Two cases are taken into consideration: the minimum number of PMUs without considering the ZIB, then, considering the ZIB. The simulations are carried out using MATLAB/SIMULINK.
Cite this article as:
Y. AZZOUGUI, A. RECIOUI and A. MANSOURI. “PMU Optimal Placement in Wide Area Monitoring Systems using Grey Wolf Optimization technique”, Algerian Journal of Signals and Systems, Vol. 4, Issue 1,June 2019.pp: 1-7.
| Application of the Unit Circle Representation to Pattern Synthesis of Nonuniformly Spaced and Nonuniformly Excited Arrays based on the Teaching Learning Based Optimization | A. RECIOUI |
Pattern synthesis of Antenna array has gained much attention over the last years as they constitute an important role in the modern communication systems. Unit circle-based techniques such as Schelkunoff null placement method have proved their effectiveness to synthesize uniformly spaced linear arrays. Nonuniformly spaced antenna array pattern synthesis has been investigated and interesting results have been obtained. In this work, the unit circle representation approach is applied to synthesize nonuniformly spaced and nonuniformly excited linear arrays. The objective is to accurately place nulls in the desired directions while achieving the least possible sidelobe level. The problem is cast as an optimization problem that is solved using the Teaching Learning Based Optimization (TLBO). Examples are dealt with to prove the design approach effectiveness and flexibility for modern communication system applications.
Cite this article as:
Abdelmadjid RECIOUI. “Application of the Unit Circle Representation to Pattern Synthesis of Nonuniformly Spaced and Nonuniformly Excited Arrays based on the Teaching Learning Based Optimization”, Algerian Journal of Signals and Systems, Vol. 4, Issue 1, 2019.pp: 8-17.
| BTLBO Based SPMUs Placement Optimization for Fault Observation in Power Grid | Abdelkader ZITOUNI Hamid BENTARZI |
The placement of synchro-phasor measurement units in electric transmission systems has also gained much attention for enhancing the control as well as the protection scheme. In this research work, a binary teaching learning based optimization (BTLBO) algorithm for the optimal placement of synchro-phasor measurement units (SPMUs) is proposed. The optimal PMU placement problem is formulated to minimize the number of SPMUs installation subject to full network observability of the power system buses under fault conditions. The effectiveness of the proposed method is verified by the simulation of IEEE 14-bus benchmark system.
Cite this article as:
A. ZITOUNIU and H. BENTARZI, “BTLBO Based SPMUs Placement Optimization for Fault Observation in Power Grid “, Algerian Journal of Signals and Systems, Vol. 4, Issue 1, June 2019.pp: 18-24.
| PMU Optimal Placement for Fault Detection in Wide Area Monitoring Systems based on the Drone Squadron Optimization | Fatma Zohra Dekhandji Yasmina Azzougui Abdelmadjid Recioui |
Wide area monitoring systems require the integration of new technologies that provide real time synchronized phase angle measurements. The Phasor measurement units (PMUs) are the most advanced devices to achieve this task so far. The objective of this work is to find the minimum number and optimal placement of PMUs in some standardized IEEE systems. The relatively new drone squadron optimization (DSO) technique is used to solve this problem. Next, fault location is studied based on the measurements collected from these PMUs. The simulations are carried out using MATLAB SIMULINK. The results show that it is possible to achieve the observability of the overall system; however, more PMUs are needed to locate the faults.
Cite this article as:
F.Z. DEKHANDJI, Y. AZZOUGUI and A. RECIOUI, “PMU Optimal Placement for Fault Detection in Wide Area MonitoringSystems based on the Drone Squadron Optimization”, Algerian Journal of Signals and Systems, Vol. 4, Issue 1,June 2019.pp: 25-31.
| Elliptic and Concentric-Elliptic Antenna Array Design using Grey Wolf Optimization | Abdelmadjid Recioui Oussama Traikia Youcef Grainat |
In this work, Grey Wolf Optimization (GWO) is applied to the optimization of elliptical and concentric elliptical antenna arrays. The objective is to minimize the Sidelobe level and improve the directivity. GWO is a nature-inspired meta-heuristic algorithm inspired by the social hierarchy and hunting behavior of grey wolves. The obtained optimal values result in a good reduction of the sidelobe level for the elliptical and concentric elliptical antenna arrays with an enhancement in the directivity. This makes the designed arrays of practical use in the communication systems.
Cite this article as:
A. RECIOUI, O. TRAIKIA and Y. GRAINAT, “Elliptic and Concentric-Elliptic Antenna Array Design using Grey Wolf Optimization“, Algerian Journal of Signals and Systems, Vol. 4, Issue 1, June 2019.pp: 32-38.
VOL.4, Issue2(December 2019)
| RRT-A*-BT approach for optimal collision-free path planning for mobile robots | ABDELFETAH HENTOUT ABDERRAOUF MAOUDJ DJELLOUL YAHIAOUI AND MUSTAPHA AOUACHE |
This paper deals with the problem of optimal collision-free path planning for mobile robots evolving inside indoor cluttered environments. Addressing this challenge, a hybrid approach is proposed combining Rapidly-exploring Random Trees (RRT), A-Star (A*) and Back-Tracking (BT) algorithms (RRT-A*-BT). Thus, a vision system is used for a nearly-exact modeling of the environment through image processing. Moreover, each iteration of the basic RRT approach is guided by A* algorithm while trying to take the shortest path linking the robot current position to target . In case of a blockage, BT algorithm is used to get out the robot from this situation. Finally, Piecewise Cubic Hermite Interpolating Polynomial (PCHIP) is used to smooth the generated optimal path. RRT-A*-BT approach is validated through different scenarios; obtained results are compared with previous works on same environments with same conditions. The results prove that RRT-A*-BT is better and faster than other algorithms of the literature, such as Genetic Algorithms and Conventional RRT, in terms of (i) computation time,(ii) path length and (iii) transfer time..
Cite this article as:
Abdelfetah Hentout, Abderraouf Maoudj, Djelloul Yahiaoui and Mustapha Aouache, “RRT-A*-BTapproach for optimal collision-free path planning for mobile robots”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019. pp: 39-50.
| Theoretical and Experimental Investigation of the Supply Voltage Unbalance Effects on Squirrel Cage Induction Motors | FATMA ZOHRA DEKHANDJI HAMID BENTARZI |
Voltage unbalance is one of the power quality problems causing a lot of ill effects on induction motors. These are namely: Overheating, line-current unbalance, derating, torque pulsation, and inefficiency. The objective of the present work is to assess and quantify the effects of voltage unbalance on induction motors using both theory and experimentation. The analytical study is performed using the complex voltage unbalance factor model of this problem. The work deals specifically with the influence of the variations in the complex angle of the voltage unbalance factor on the stator and rotor currents, stator and rotor copper losses and total losses. The experimental investigation is carried out using an apparatus that measures currents, torque and power losses..
Cite this article as:
Fatma Zohra DEKHANDJI and Hamid BENTARZI, “Theoretical and Experimental Investigation of the Supply Voltage Unbalance Effects on Squirrel Cage Induction Motors”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019. pp: 51-60.
| 3D Antenna Array Design using Firefly Optimization Algorithm | ABDELMADJID RECIOUI YOUCEF GRAINAT |
The design of antenna arrays in a 3D geometry is presented in this Chapter. The decision variables considered for this synthesis problem are the array element amplitude excitations. The objective is to design an array which ensures minimum sidelobe level and a high directivity. The synthesis process is carried out using a nature-inspired global optimization technique. The optimization method based on the reaction of a firefly to the light of other fireflies is known as Firefly Algorithm (FA). It is a population-based iterative heuristic global optimization algorithm technique, developed by Xin-She Yang, for multi-dimensional and multi-modal problems. Simulation results for an antenna array with isotropic elements show that side lobe level is significantly reduced in non-uniform case. Besides, the directivity is not worse than that of the uniform one..
Cite this article as:
Abdelmadjid RECIOUI and Youcef GRAINAT, “3D Antenna Array Design using Firefly Optimization Algorithm”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019.pp: 61-70.
| Predictive Maintenance Applied to Three phase Induction Motors | FATMA ZOHRA DEKHANDJI SALAH EDDINE HALLEDJ OUSSAMA ZABOUB |
Induction machines are widely used in industry. The operating conditions may sometimes lead the machine into different fault situations. The machine should be shut down when a fault is experienced to avoid complete process failure and for the safety of the workers. The predictive maintenance consists of scheduling maintenance activities only when a functional failure is detected. The advantages of predictive maintenance are accepted in many industries because of its efficiency in fault detection during early stages and thus reducing unscheduled down time. It increases productivity, improves quality and provides the feeling of safety and reliability to staff. The main types of external faults experienced by these motors are over loading; single phasing, unbalanced supply voltage, phase reversal, ground fault, under voltage and over voltage. MATLAB/SIMULINK simulation is used in this work for the detection and analysis of the faults on induction motor..
Cite this article as:
Fatma Zohra DEKHANDJI, Salah Eddine HALLEDJ and Oussama ZABOUB, “Predictive Maintenance Applied to Three Phase Induction Motors”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019.pp: 71-88.
| A Smart Metering Simulation in LABVIEW | ABDELMADJID RECIOUI HASSIBA DJEMAI FARAH BOUCENNA |
The smart grid delivers electricity from producers to consumers using two-way digital technology and considers the involvement of the user. The implementation of smart grids should start at the consumer side using smart meters, control devices and a communication link. Smart metering is the bridge between smart buildings and smart grids. It is viewed as a crucial factor for an efficient functioning of the internal electricity market and a successful implementation of the renewable energy and security of supply. The replacement of the currently used electromechanical meters with smart digital meters along with domestic load controllers is identified for better energy conservation at the consumer side .These devices can be remotely read and are able to measure consumption multiple times per day which is beneficial for a good demand response, customer feedback and energy management. The purpose of the present paper is to illustrate how smart meters operate and how their implementation can improve the current grid
Cite this article as:
Abdelmadjid RECIOUI, Hassiba DJEMAI and Farah BOUCENNA, “A Smart Metering Simulation in LABVIEW”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019.pp: 89-100.
| Power Quality Detection, Classification and Monitoring Using LABVIEW | FATMA ZOHRA DEKHANDJI SALIM TALHAOUI YOUCEF ARKAB |
In recent years, Power Quality becomes increasingly a major concern for both electric utilities and end users. Accordingly, the electrical engineering community has to deal with the analysis, diagnosis and solution of PQ issues using system approach rather than handling these issues as individual problems. This paper describes the analysis of PQ using advanced signal processing tools represented in Hilbert & Wavelet Transforms (HT-WT) and artificial intelligence tools represented in Artificial Neural Network & Support Vector Machine (ANN-SVM) for detection and classification of power quality disturbances respectively. These techniques were successfully simulated using LABVIEW software capabilities. The results of simulation indicate that the signal processing techniques are effective mechanisms to detect and classify power quality disturbances. At the end, the combination of WT as a tool of detection and features extraction with SVM as a classifier tool resulted as the best combination for PQ monitoring system.
Cite this article as:
Fatma Zohra DEKHANDJI, Salim TALHAOUI and Youcef ARKAB, “Power Quality Detection, Classification and Monitoring Using LABVIEW”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019. pp: 101-111.
| Efficient lock and home security system | HADJIRA BELAIDI NOUR-EL-HOUDA MEDDAH |
This work deals with lock and home security systems. First, Motion sensors detect movement indoors and outdoors to guard against intruders, protect valuables and more. Thus, if any movement, RFID reader will be activated and database will be scanned to identify the persons who have the access to the home. This enhances the effectiveness of the security system and provides the user with the complete, whole-house protection he needs. An RFID badge can be used to unlock the door and access to the home. Alerts also are received on the smart phone if motion is sensed in a protected area inside or outside; giving the user the information it needs to act quickly. The door can also be remotely locked/unlocked. A microcontroller (ATmega2560) is used to control the entire system, and GSM is used to send alerts to the Smartphone. An Ethernet shield that connects the microcontroller to the database (DB) is also added.
Cite this article as:
Hadjira BELAIDI and Nour-El-Houda MEDDAH, “Efficient lock and home security system”, Algerian Journal of Signals and Systems, Vol. 4, Issue 2, December 2019. pp: 112-120.
VOL5(2020)
VOL.5, Issue1(March 2020 - Special Issue of the international conference on Advanced Engineering in Petrochemical Industry ICAEPI 2019 (Part I) Skikda, Algeria. Nov. 26-28, 2019)
| Traffic Urban Control Using an Intelligent PSO Algorithm Based on Integrated Approach | Radja DIAF, Cherif TOLBA, Ahmed NAIT SIDI MOH |
In this paper, we intend to contribute to the improvement of urban traffic mobility using a learning method of traffic lights controllers. We proposed a Particle Swarm Optimization (PSO) method in which the intelligent swarm acts as the cycle time of the traffic signal. The best swarm (solution found) meets the evaluation criteria selected to describe desired objectives. The main measures of traffic lights efficiency are to maximize flow-rate at which vehicles can cross a road junction and minimize the additional travel time of the driver called vehicle delay. Particle Swarm Optimizer was coupled with the traffic flow model based on Continuous Petri nets (PN). One potential advantage of CPN model is to provide insights regarding a behavior of the platoon of vehicles on the target road network. The result obtained from this study has tested with various scenarios related to intersections in different situations. The developed self-scheduling of the optimal signal timing ensures safety and continuous traffic flow, thus increasing the mobility and reducing fuel consumption and pollutant emissions.
Cite this article as:
Radja Diaf, Cherif Tolba, Ahmed Nait Sidi Moh, “Traffic Urban Control Using an Intelligent PSO Algorithm Based on Integrated Approach”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 1-9.
| Fuzzy LOPA for the evaluation of accident scenarios and risk reduction measures in suppler manner | Hellas Mohamed Seddik, Chaib Rachid |
The analysis and evaluation of risks by the LOPA method requires the presence of certain data and information on the various risk evaluation parameters such as, the frequencies of initiating events, the probabilities failures of the security barriers and also probability of ignition .This data is generally obtained from the history of the system analyzed. In the absence or lack of data on the state of the system, other sources such as databases and expert judgment are used. Despite the fact that the choice of data is made while respecting the adaptation of this data to the system studied, based on its history and on similar systems having the same mode of operation, it seems important to emphasize the fact that imperfections are not properly taken into account. Linked to the data used by the various risk analysis methods including the LOPA method, the results are always uncertain and imprecise. To address such a problem, we use the "fuzzy LOPA" approach. As a case study, we used an operational industrial system which is a heater H-101.
Cite this article as:
Hellas Mohamed Seddik, Chaib Rachid, “Fuzzy LOPA for the evaluation of accident scenarios and risk reduction measures in suppler manner”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 10-17.
| Analysis and Control Design for a Class of Fractional Order Time-Delay Systems | Marwa BOUDANA, Samir LADACI, Jean Jacques LOISEAU |
In this paper, we consider a class of fractional order time-delay systems and propose a fractional order control design for their stabilization. The controller parameter’s adjustment is achieved in two steps: first, the relay approach is used to compute satisfactory classical PID coefficients, namely kp, Ti and Td. Then, the fractional orders ʎ and µ are optimized using performance criteria. Simulation results show the efficiency of the proposed design technique and its ability to enhance the PID control performance.
Cite this article as:
Marwa BOUDANA, Samir LADACI, Jean Jacques LOISEAU, “Analysis and Control Design for a Class of Fractional Order Time-Delay Systems”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 18-24.
| Risk Assessment of a Gas Plant (Unit 30 Skikda Refinery) Using Hazop &Bowtie Methods, Simulation of Dangerous Scenarios Using ALOHA Software | BENDIB Riad, MECHHOUD Elarkam, BENDJAMA Hanane, BOULKSIBAT Halima |
Process plant and chemical processes are complex and large systems, consisting of thousands of devices interacting with each other [76][45]. The structure of this type of industrial plants lead to difficulties in process control, hence deviations from the operation objectives or desired states. These deviations creates abnormal situations that drive products out of specification, increased operational costs, shut downs and even worse they can cause accidents, which may lead to damages of equipment, environment and affect the health. identifying hazards is fundamental for ensuring the safe design and operation in process plants. Based on the idea of learning from accidents, several techniques and standards are available to identify hazardous situations and help companies to build up strategies to avoid the hazards. In this s work we present a study based on two methods BOWTIE and HAZOP methods applied for an LPG a plant for gas separation located in SKIKDA refinery which is considered as the most important refinery in Algeria where the treatment capacity reaches more than 15 millions tones per year of crude oil. Several recommendations raised from our study to improve the safety of the plant particularly since it is considered as an old plant start working since 1980. The study is completed by simulating the deduced dangerous scenarios using ALOHA software.
Cite this article as:
BENDIB Riad, MECHHOUD Elarkam, BENDJAMA Hanane, BOULKSIBAT Halima, “Risk Assessment of a Gas Plant (Unit 30 Skikda Refinery) Using Hazop &Bowtie Methods, Simulation of Dangerous Scenarios Using ALOHA Software”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 25-32.
| Design of Decentralized Fractional Order PIʎ Controller for Pilot Plant Binary Didtillation Column | BETTOU KHALFA, CHAREF ABDELFATEH |
This paper presents the application of fractional order operators to improve the control quality of multivariable systems. The basic ideas of this tuning method are based, in the first place, on the existed tuning methods for setting the parameters of the decentralized fractional order PIʎ controller for ʎ=1, which means setting the parameters of the classical decentralized PI controller, and the minimum integral criterion by using Particle Swarm Optimization (PSO) algorithm for setting the fractional integration action order ʎ. The integral criterion is formulated to improve the dynamic response of the system, while causing a good decoupling between control loops. The Distillation Column, which is a multivariable system with two inputs and two outputs (TITO), in a decentralized control structure, is analyzed. Simulation results are presented to show the control quality improvement of this proposed decentralized fractional order PIʎ controller tuning method compared to the decentralized PI controller tuned using any existed tuning method.
Cite this article as:
BETTOU KHALFA, CHAREF ABDELFATEH, “Design of Decentralized Fractional Order PIʎ Controller for Pilot Plant Binary Didtillation Column”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 33-39.
| Robust MRAC-based adaptive control of a Doubly Fed Induction Generator (DFIG) in a Wind energy system using a fractional order Integrator | Sihem Djebbri, Hanane Balaska, Samir Ladaci |
This paper presents a robust control of doubly fed induction generator for wind generation system. The whole system is presented in d-q-synchronous reference frame. We propose the implementation of adaptive control with integer model reference MRAC, fractional model reference FOMRAC with integer and fractional order control law design for active and reactive power supervision control in the doubly fed induction generator (DFIG) for wind energy systems. The objective is to realize a comparative study between the classical regulator MRAC and the proposed FO-MRAC with integer and fractional order control law in order to demonstrate the robustness of the fractional order adaptive control with fractional order integral in control law comparatively to integer order one. Performance and robustness results obtained will be presented and analyzed.
Cite this article as:
Sihem Djebbri, Hanane Balaska, Samir Ladaci, “Robust MRAC-based adaptive control of a Doubly Fed Induction Generator (DFIG) in a Wind energy system using a fractional order Integrator”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 40-46.
| Evaluation of safety barriers deduced from the HAZOP study of fired heater F201-101, ADRAR refinery, Algeria using ETA method | BATOUT Naoual, BENDIB Riad, ZENNIR Youcef |
This paper described the method of event tree analysis that is commonly used to identify, characterize and estimate the risk. Quantitative estimates for probability of breach or failure and the resulting consequences can be obtained using event trees. Qualitative depictions of potential failure modes and consequences can also be developed using event trees. An event tree analysis (ETA) is an inductive procedure that shows all possible outcomes resulting from an accidental (initiating) event. An event tree consists of a sequence of interconnected nodes and branches. Each node defines a random variable that represents an uncertain event or state of nature. Branches originating from a node represent each of branches to represent the likelihood for each event or condition. These probabilities are conditional on the occurrence of the preceding events to the left in the tree. Our work includes a HAZOP study to determine the necessary safety barriers as a first step. And as a second step is their evaluation using ETA method of fired heater F201-101, ADRAR refinery, Algeria. This particular method is well suited to estimating the risk stemming from process plant failure. Neither the initiators of industrial accidents nor the layers of protection that prevent them are typically complex, that is, they do not usually require analysis by redundant systems or the time for on-line repair. Thus, they can be accurately characterized with the probability multiplication methods that from the basis of event tree analysis.
Cite this article as:
BATOUT Naoual, BENDIB Riad, ZENNIR Youcef, “Evaluation of safety barriers deduced from the HAZOP study of fired heater F201-101, ADRAR refinery, Algeria using ETA method”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 47-52.
| Integrated RMA with FMECA analysis using a graphical inteface: case study recycling iso-butane pump (CP2K) | El-Arkam Mechhoud, Riad Bendib, Youcef Zennir |
The objective of our work is the implementation of a new approach for the dependability enhancement of a recycling iso-butane pump (Skikda CP2K petrochemical plant) based on automateddependability analysis system including the automation of the RMA (Reliability, Maintainability, Availability) study and FMECA (Failure Mode Effect and Criticality Analysis) method. After the system description, we present briefly the principle of the automated method. The system analysis in degraded mode is realized by using FMECA method. This automated analysis brings out the different failure modes, their causes and their consequences of each component. The result is risks minimization and reliability enhancement of the considered system.
Cite this article as:
El-Arkam Mechhoud, Riad Bendib, Youcef Zennir, “Integrated RMA with FMECA analysis using a graphical inteface: case study recycling iso-butane pump (CP2K)”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 53-57.
| Novel Fractional order Integrators Using Traditional Rules Interpolation | Chafia MEKHNACHE, Nawel BALASKA, Nedjma DETOUCHE |
This work proposes a new IIR integer order digital, so a new IIR fractional order integrators. The followed method includes two stages. First, the integer order integrator is obtained by interpolating well-known integration rulesnamely, Euler, bilinear and Simpsonas a weighted sum. Second the initial value theorem for the selection of initial value of the impulse response is used. Lastlythe Steiglitz-Mc-bride signal modeling technique is applied to find the parameters of rational approximation models. Numerical examples are presented to illustrate the performance of the proposed integrator. It was found that the Euler-bilinear-Simpson integrator yields high accuracy than the existing integrators.
Cite this article as:
Chafia MEKHNACHE, Nawel BALASKA, Nedjma DETOUCHE, “Novel Fractional order Integrators Using Traditional Rules Interpolation”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 58-65.
| Design and Simulation of Graphical User interface for Cables Parallel Robot | F. INEL, Y.ZENNIR and R.ADLENE |
In this paper, we have presented the 3D cables parallel robot in pyramid’s form. The dynamic equation has been established including the dynamic behavior, in this context; we investigated to use the Runge Kutta method of 4th order to solving non-linear partial differential equation of our system. The main contribution of this work is firstly: a graphical user interface (GUI) has been developed and implemented based on the geometric model, in order to visualizing the position of end effect or, taking account model uncertainties and payload variation. Secondly, we have studied and solved our system’s dynamical equation with implementation the PD control. This last, applied for different trajectories so as to test the accurate tracking the desired trajectory simulation using MATLAB software. As a result, the simulation tests on this robot verify the efficiency performance of the proposed controller.
Cite this article as:
F. INEL, Y.ZENNIR and R. ADLENE, “Design and Simulation of Graphical User interface for Cables Parallel Robot ”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 66-72.
| A New Design Method for Fractional Order Proportional Integral (FO-PI) Controller of 3x3 Multivariable Systems | Sami LAIFA, Badreddine BOUDJEHEM |
This paper presents a new design method of Fractional Order Proportional Integral Controller (FO-PI) for 3x3 multivariable system (three-input-three-output). The Optimal parameters of the FO-PI controllers are tuning by minimizing performance index criterion as objective function. The irrational transfer function of the fractional operator is performed by means of diffusive representation and allows to formulate the optimization problem as a function of fractional order. The simulation results show that the performance of the response obtained by diffusive approach -based FO-PI are better than whose obtained by the classical controllers.
Cite this article as:
Sami LAIFA, Badreddine BOUDJEHEM, “A New Design Method for Fractional Order Proportional Integral (FO-PI) Controller of 3x3 Multivariable Systems”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 73-78.
| A New Approach to System Safety of human- multi-robot mobile system control with STPA and FTA | Chaima BENSACI , Youcef ZENNIR, Denis POMORSKI |
Autonomous Mobile multi-robots are among the most complex systems in their control. Especially when those robots navigate in hazardous and dynamic environments such as chemical analysis laboratories which include dangerous and harmful products (poisonous, flammable, explosive ...). This study deals the safety problem in a robotic analysis laboratory and investigates the possibility to use those autonomous multi-robots in such environments with the presence of human workers without serious hazards. We used a systems-theoretic hazard analysis technique (STPA) in addition to fault tree analysis to identify the potential safety hazard scenarios, their causal factors and we conclude by a set of recommendations. Keywords: Hazard Analysis, STPA, FTA, Collaborative multi-mobile robots.
Cite this article as:
Chaima BENSACI , Youcef ZENNIR, Denis POMORSK, “A New Approach to System Safety of human-multi-robot mobile system control with STPA and FTA”, Algerian Journal of Signals and Systems, Vol. 5, Issue 1, March 2020. pp: 79-85.
VOL.5, Issue2(June 2020 - Special Issue of the International conference on Advanced Engineering in Petrochemical Industry ICAEPI 2019 (Part II) Skikda, Algeria. Nov. 26-28, 2019 )
| Simulation and Analysis of a Petrochemical Process (Deethanizer Column- MLE field) using HYSYS Aspen Simulator | BELHOCINE Amel BENDIB Riad ZENNIR Youcef |
Natural gas industry has a great strategic and economic importance; it becomes one of the most attractive business opportunities in the petroleum and petrochemical field. In order to produce high quality gas, many companies all over the world including Algeria create many plants for natural gas processing to clean raw natural gas, by using separation unites and other services to get a product that respect the commercial specifications. Natural gas fractions are separated by distillation column in our case is called deethanizer tower. In this work a dynamic simulation study of deethanizer column is developed and implemented in HYSYS simulator. Simulation results prove that the HYSYS is a powerful tool to simulate industrial processes such that the simulated results are close to the real ones..
Cite this article as:
BELHOCINE Amel, BENDIB Riad, ZENNIR Youcef, “Simulation and Analysis of a Petrochemical Process (Deethanizer Column- MLE field) using HYSYS Aspen Simulator”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 86-91.
| Particle Swarm Optimization for tuning a Fuzzy Supervisory Controller Parameters (Takagi Seguno and Mamdani Engines) | BENDIB Riad HAMMADI Youcef MAZOUZI Mohammed MECHHOUD Elarkam |
Steam generation systems are a crucial part of most power plants. Therefore, boiler control is an important problem for power plants that are frequently changing load or subject to sudden load disturbances, which are common in current market driven electricity industry. Hence, the control of such processes needs the design of more effective controllers. Although Fuzzy logic controllers seem more adequate for controlling chemical processes, since they provides solutions to incompletely defined and nonlinear processes industrials does not prefer such type of controllers since the tuning of these controllers requires the adjustment of a large number of parameters, which is tedious. The fact that let the industrials prefer the use of simple PID controllers rather than complicated fuzzy or neural controllers. Hence in this paper a simple PD controller is used to control the steam flow parameters of whereas its parameters are deduced using fuzzy supervisory controller the parameters of the supervisory controller are optimized using particle swarm optimization algorithm, the most known inference Engines SEGUNO and MAMDANI are considered.
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BENDIB Riad, HAMMADI Youcef, MAZOUZI Mohammed, MECHHOUD Elarkam, “Particle Swarm Optimization for tuning a Fuzzy Supervisory Controller Parameters (Takagi Seguno and Mamdani Engines)”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 92-97.
| Risk Analysis Using HAZOP -Fault Tree - Event Tree Methodology Case Study: Naphta Stabilizer-A Reflux Drum (LPG separation) in RA1K | Seif El Islam Bouasla Youcef Zennir EL-Arkam Mechhoud |
The purpose of this work is the risk assessment of a stabilizer reflux drum using HAZOP - Fault tree - Event tree approach. This risk assessment approach aims first of all to identify potential accident scenarios using Hazard an Operability study (HAZOP), these scenarios need more detailed frequencies estimation, it is performed thanks to fault tree analysis. Then, to analyze events issuing after success or fail of safety barriers, the event tree is used. Finally, in order to better appreciate accident scenarios, ALOHA is utilized to simulate them.
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Seif El Islam Bouasla, Youcef Zennir, EL-Arkam Mechhoud, “Risk Analysis Using HAZOP -Fault Tree - Event Tree Methodology Case Study: Naphta Stabilizer-A Reflux Drum (LPG separation) in RA1K”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 98-105.
| Impacts of the black clay soil moisture on the corrosion and cathodic protection performance of the API X70 Pipeline | R. Hendi H. Saifi K. Belmokre M. Ouadah |
The impact of the black clay soil moisture of Skikda (East of Algeria), on the corrosion cathodic protection performance of the API X70 pipeline was studied in this paper. To achieve this objective, first, electrochemical analysis has been carried out. Then, in order the show impact of the black clay soil moisture of Skikda on the cathodic protection of the API X70 Pipeline, the corrosion parameters of the API X70 steel pipeline obtained by electrochemical measurements such as Tafel slopes, corrosion current densities, and corrosion potentials were used as boundary conditions in the elaborated cathodic protection model. The obtained results show that the corrosion current I corr is directly proportional to the moisture content up to 50 wt. %, with a potential shift towards the more electronegative values. The cathodic protection perfermance has been well proven in black soil at 100 wt. % moisture contents.
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R. Hendi, H. Saifi, K. Belmokre, M. Ouadah, “Impacts of the black clay soil moisture on the corrosion and cathodic protection performance of the API X70 Pipeline”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 106-111.
| Fractional order adaptive MRAC controller for an active suspension system | SEIF EDDINE KHELAS SAMIR LADACI YASSINE BENSAFIA |
This paper investigates the use of fractional order operators in conventional model reference adaptive control (MRAC). A fractional adaptive controller is designed based on the use of a fractional-order parameter adjustment rule. Applied in numerical simulations for an active suspension system and compared with the conventional MRAC, it is shown that the performances of FOMRAC are superior to classical control schemes.
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SEIF EDDINE KHELAS, SAMIR LADACI, YASSINE BENSAFIA, “Fractional order adaptive MRAC controller for an active suspension system”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 112-117.
| Assessment of the Common Cause Failure(CCFs) effect on Safety Instrumented System(SIS) by usign the Fault Tree Analysis (FTA) method | Metatla Hassina Rouainia Mounira |
The reliability of the safety-instrumented system (SIS) has received a lot of attention during the past decade, with the emergence of the new standards such as International Electrotechnical Commission IEC61508, and IEC61511, that provides a general framework for the design and implementation of these safety barriers. Among the problems influencing on the global SIS reliability: Common Cause Failure (CCF), which contributes too many accidents, that has a negative impacts, so it must be considered in the risk and reliability assessment for these systems. The aim of this work is to focus on the effects of common cause failures (CCFs) on the reliability of a SIS, by implementing a comparative SIS dependability study with and without consideration the CCFs, using the beta factor model, and the fault tree analysis (FTA) method.
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Metatla Hassina, Rouainia Mounira, “Assessment of the Common Cause Failure(CCFs) effect on Safety Instrumented System(SIS) by usign the Fault Tree Analysis (FTA) method”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 118-129.
| Level Control of Quadruple Tank Process using Laguerre Functions based Model Predictive Control Algorithm | Kamel Menighed Issam Chekakta |
This paper aims to present a model predictive controller based on discrete state-space modeling, where the future control trajectory is approximated by a set of discrete-time Laguerre functions instead of shift forward operators. The benefit of using these orthonormal Laguerre functions is that they have fewer parameters to adjust in the optimization problem and the computation load is significantly lower than the standard predictive control. The effectiveness of this controller is illustrated through the quadruple tank process, which is a highly interacted, multivariable and constrained system.
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Kamel Menighed, Issam Chekakta, “Level Control of Quadruple Tank Process using Laguerre Functions based Model Predictive Control Algorithm”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 130-137.
| Real-time fractional order system identification using recursive least squares method | Walid TOUIL Samir LADACI Abdelhafid CHAABI |
In this paper, we address the problem of fractional order systems real-time identification based on recursive least squares technique. The fractional order model is approximated using the Charef Singularity function method and Grünwald numerical approximation for fractional order integral and derivative. We show by numerical simulation example that the identified model represents the original system efficiently.
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Walid TOUIL, Samir LADACI, Abdelhafid CHAABI, “Real-time fractional order system identification using recursive least squares method”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 138-141.
| Straddle Robot Design and control with a PID controller optimized by PSO algorithms | Youcef ZENNIR Sami GRIEF Elarkam MECHHOUD |
The work presented in this paper illustrates the design and control of a straddle robot-type four-wheel moving robot with PID controller adjusted by meta-genetic algorithms genetic Algorithm (GA) and PSO. The approach used for the simulation is a modeless approach because it assumes no knowledge of the mathematical model of the system, indeed, the mechanical structure was implemented under SolidWorks, then a simulation (Solidworks, Simulink) has was conducted using particle swarm optimization (PSO) techniques for controller parameter optimization (PID) to control the steering angle and angular velocity of each wheel. The results obtained clearly illustrate the effectiveness of the selected control architecture and the accuracy is better with the use of the PSO algorithm. In a future work, we compare the results with using other optimization algorithms like GA (Genetic Algorithm) and GWO (Grey Wolf Optimizer) algorithm.
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Youcef ZENNIR, Sami GRIEF, Elarkam MECHHOUD, “Straddle Robot Design and control with a PID controller optimized by PSO algorithms”, Algerian Journal of Signals and Systems, Vol. 5, Issue 2, June 2020. pp: 142-147.
VOL.5, Issue3(September 2020)
| Hybrid Approach to Design of Two Dimensional Stable IIR Digital Filter | Hichem CHAKER Samir KAMECHE |
In this paper, the magnitude optimization for the design of two dimensional digital filter is attempted and new design method for a two-dimensional (2-D) recursive digital filter is proposed via appropriate genetical swarm optimization with the introduction of the desired stability constraints. The method is tested on a numerical example and the obtained results are presented with previously published methods.
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Hichem CHAKER, Samir KAMECHE, “Hybrid Approach to Design of Two Dimensional Stable IIR Digital Filter”, Algerian Journal of Signals and Systems, Vol. 5, Issue 3, September 2020. pp: 148-152.
| Three-Dimensional Pulse Width Modulation Techniques for Three-Phase Four Leg Voltage Source Converters | Mohamed ELBAR Imad MERZOUK Mohamed Mounir REZAOUI Noureddine BESSOUS |
This paper presents a new control strategy to improve the performance of shunt active power filter (SAPF) in three-phase four-wire system when operating under an unbalanced system. A control method based on the instantaneous power theory have been used and discussed. On the other side, a three-dimensional hysteresis current controller is used to track the compensated current references. This scheme requires the service of a phased-locked loop (PLL) to make the system insensitive to the distortions that are generally present in the utility voltages. The performance of the proposed topology under the used control approach has been finally discussed through the obtained simulation results.
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Mohamed ELBAR, Imad MERZOUK, Mohamed Mounir REZAOUI, Noureddine BESSOUS, “Three-Dimensional Pulse Width Modulation Techniques for Three-Phase Four Leg Voltage Source Converters”, Algerian Journal of Signals and Systems, Vol. 5, Issue 3, September 2020. pp: 153-158.
| A Quantitative Comparative Study of Video Denoising with Optical Flow Estimation in Spatial and Transform Domains | Sofiane KHOUDOUR Zoubeida MESSALI Rima BELKHITER |
In this paper we establish an extensive quantitative comparative study of patch-based video denoising with optical flow estimation algorithms. Namely, SPTWO, VBM3D and VBM4D algorithms are considered. The aim of this study is to combine these video denoising algorithms in a hybrid proposed process to take advantage of. SPTWO takes advantage of the self-similarity and redundancy of adjacent frames. The proposed hybrid algorithm and the three video denoising algorithms are implemented and tested on real sequences degraded by various level Additive White Gaussian Noise (AWGN). The obtained results are compared in terms of the most used performance criteria for various test cases. The performance criteria computed in this study are: RMSE and SSIM in addition to the running time and visual quality of the sequence video. Experimental results, illustrate that the proposed algorithm and SPTWO provide the best video quality and appear to be efficient in terms of preserving fine texture and detail reconstruction.
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Sofiane KHOUDOUR, Zoubeida MESSALI , Rima BELKHITER, “A Quantitative Comparative Study of Video Denoising with Optical Flow Estimation in Spatial and Transform Domains”, Algerian Journal of Signals and Systems, Vol. 5, Issue 3, September 2020. pp: 159-166.
| Performance Evaluation of Storage Area Network(SAN)With internet Small Computer System Interface (iSCSI)For Local System PC | Muthanna Mohammad AL-aswad Khalil Alwajeh |
iSCSI is a newly emerging protocol with the goal of implementing the Storage Area Network (SAN) technology over TCP/IP,where enables to access to remote data that in attached storage disks storages - Direct Attached Storage(DAS) over IP-networked. Also it's brings economy and convenience whereas it also raises performance and reliability issues. This paper investigates about possibility , using storage technology of the SANs, and iSCSI-SAN protocol,in local system PC, to improve access to attached storage disks storages in local system, with using iSCSI-SANs as virtual storage, is rather than DAS storage in local system of PC. Explicates after experiment procedure is that improving throughput of iSCSI-SANs was better than attached storage disks storages - DAS in local system . This means is that it can use iSCSI-SANs in local system of PC as attache storage disks storages as DAS , without cost , high performance, and easy control.
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Muthanna Mohammad AL-aswad , Khalil Alwajeh, “Performance Evaluation of Storage Area Network(SAN)With internet Small Computer System Interface (iSCSI)For Local System PC”, Algerian Journal of Signals and Systems, Vol. 5, Issue 3, September 2020. pp: 167-178.
| Covid-19 Epidemic Control Strategy Using Risk Analysis and Decision Making Tools | Mahfoud CHAFAI Abdelkader ZITOUNI Hamid BENTARZI |
Mitigation of the major risk caused by the Coronavirus epidemic must be approached in a scientific manner by using methods and tools of risk analysis and management. In order to develop an effective strategy, emergency plan based on these methods for minimizing human losses whatever the scenario that may arise in the future may be established.
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Mahfoud CHAFAI, Abdelkader ZITOUNI, Hamid BENTARZI, “Covid-19 Epidemic Control Strategy Using Risk Analysis and Decision Making Tools”, Algerian Journal of Signals and Systems, Vol. 5, Issue 3, September 2020. pp: 179-189.
VOL.5, Issue4(December 2020)
| Synthesis of activated carbon sand their application in the synthesis of monometallic and bimetallic supported catalysts | Dalila BOUSBA Chafia SOBHI Amna ZOUAOUI Souad BOUASLA |
Biomass-derived porous carbons are attractive materials for the synthesis of carbon-supported catalysts, carbonaceous catalysts are environmentally benign and could provide an important competitive advantage as compared to existing heterogeneous catalysts, however the surface properties of carbon materials and excellent physical and chemical properties are compatible with diverse catalysis reactions including organic transformations. Currently, activated carbons are one of well known carbonaceous materials for their catalytic properties and for use as support in heterogeneous catalysis. The supported catalysts have been successfully used in the chemical industries for a long time, in which carbon supported catalysts have allowed to a new chemical catalytic process, on the other hand Heterogeneous catalysis plays a key role in the manufacture of essential products in different fields. In this paper, we present a comparative study, between two main different methods for activated carbons (ACs) preparation namely, physical and chemical activations. Latter was prepared from agro-industrial biomass and used as a support to prepare monometallic (dry impregnation and excess impregnation) and bimetallic catalyst (successive impregnation and co impregnation).
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Dalila BOUSBA, Chafia SOBHI, Amna ZOUAOUI,Souad BOUASLA, “Synthesis of activated carbon sand their application in the synthesis of monometallic and bimetallic supported catalysts”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 190-196.
| RLS-based Identification of fractional order H n1,n2 system using the Singularity Function approximation | Yamina ALI LARNENE Samir LADACI Aissa BELEMEGUENAi |
This paper presents a study of fractional order systems modeling and identification by recursive least squares (RLS) with forgetting factor estimation technique. The fractional order integrators are implemented using the Singularity Function approximation method. Parametric Identification of fractional order differential equations (FDE) is investigated when estimating system parameters by a linear model with respect to parameters, as well as non-integer orders from temporal data (H n1,n2 )-type model. A numerical simulation example illustrates the effectiveness of the proposed identification approach to ensure the convergence of the plant and model outputs even if a bias is persistent in parameters’ values.
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Yamina Ali Larnene, Samir Ladaci, Aissa Belemeguenai, “RLS-based Identification of fractional order H n1,n2 system using the Singularity Function approximation”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 197-202.
| Steel Surface Defect Detection Using Convolutional Neural Network | Yousra KATEB Hocine MEGLOULI Abdelmalek KHEBLI |
Steel is the most important engineering and construction material in the world. It is used in all aspects of our lives. But as every metal is can be defected and then will not be useful by the consumer Steel surface inspection has seen an important attention in relation with industrial quality of products. In addition, it has been studied in different methods based on image classification in the most of time, but these can detect only such kind of defects in very limited conditions such as illumination, obvious contours, contrast and noise...etc. In this paper, we aim to try a new method to detect steel defects this last depend on artificial intelligence and artificial neural networks. We will discuss the automatic detection of steel surface defects using the convolutional neural network, which can classify the images in their specific classes. The steel we are going to use will be well-classified weather the conditions of imaging are not the same, and this is the advantage of the convolutional neural network in our work. The accuracy and the robustness of the results are so satisfying.
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KATEB Yousra, MEGLOULI Hocine, KHEBLI Abdelmalek, “Steel Surface Defect Detection Using Convolutional Neural Network”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 203-208.
| Capacity Optimization of MIMO Systems Involving Conformal Antenna Arrays using a Search Group Algorithm | Abdelmadjid RECIOUI |
MIMO systems constitute a backbone of the fourth and fifth generations of wireless communication systems. The purpose of this paper is to introduce the involvement of conformal antenna arrays into MIMO systems. The Search Group Algorithm (SGA) is then used to further enhance the capacity of MIMO system employing conformal antenna arrays at both ends (Transmitter; Tx and Receiver; Rx). The results reveal that compared to the linear and 2D cases, conformal antenna arrays promise higher capacity values which motivates their employment in future MIMO communication systems.
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Abdelmadjid Recioui, “Capacity Optimization of MIMO Systems Involving Conformal Antenna Arrays using a Search Group Algorithm”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 209-214.
| Design Optimization of PMU Anti-Aliasing Filters using Taguchi Method | Fatma Zohra DEKHANDJI |
A Phasor Measurement Unit (PMU) is a monitoring device, which serves in checking the power system condition by measuring voltage and current phasors along with frequency at a particular node. The basic structure of PMU consists of Synchronization Unit, Measurement Unit and Data Transmission Unit. The Measurement Unit has three components: Anti-aliasing filters, Analog-to-Digital Converter and Phasor measurement Unit/ Processor. An anti-aliasing filter ensures that all the analog signals have the same phase shift and attenuation thus assuring that the phase angle differences and relative magnitudes of the different signals are unchanged. Anti-aliasing filters made up of an analog front end and a digital decimation filter are far more stable as far as aging and temperature variations are concerned. IEEE C37.118 standard stipulates that it is mandatory to use the filter for avoiding any aliasing errors. Out of various analog filters, the Butterworth has been preferred due to its flat response in pass-band as compared to other filters. In this work, it is attempted to design anti-aliasing filters to be used in PMUs. The design problem is formulated as an optimization task that is solved using the Taguchi method. The results show better performance in terms characteristics compared to the conventional filters. The designed filters may be employed as building blocks in modern PMUs.
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Fatma Zohra Dekhandji, “Design Optimization of PMU Anti-Aliasing Filters using Taguchi Method”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 215-219.
| Characterization of Aluminum-doped SnO2 thin films obtained by spray pyrolysis method | Hocine SEFARDJELLA Abdennour KABIR Bouzid BOUDJEMA Athmen BENHAOUA |
Aluminum doped tin oxide SnO2: Al thin films were deposited on glass substrates using spray pyrolysis method. The deposited films are a polycrystalline with a tetragonal rutile structure. The variation of lattice parameters a and c decreases as a function of Al concentration due to ionic radius of (Sn=0.71Å) and (Al=0.51Å).Crystallites sizes varied between 29.25 and 32.80 nm. Al the samples have a transmission raised between 92 and 95% in the visible range. The optical band gap energy was found to vary in the range of 3.68 - 3.85eV. Electrical measurements revealed the increase of the electrical conductivity with Al content and show a maximum at 2% of the doping and then decreases due to decrease of the grain size. Following this study we can conclude that the Aluminum doped tin oxide developed by this technique can be used in gas sensors and photovoltaic cells.
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Sefardjella Hocine, Kabir Abdennour, Boudjema Bouzid, Benhaoua Athmen, “Characterization of Aluminum-doped SnO2 thin films obtained by spray pyrolysis method”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 220-223.
| Improvements in the performance of an SIS by bypass reduction on the safety functions | Ramdane SKLAB Youcef ZENNIR Riad BENDIB |
In order to maintain the integrity of its installation, the BIR EL MSANA (BMS) oil company has equipped itself with a safety instrumented system (SIS), complying with IEC 61508 and IEC 61511 standards. Whereas some constitutive functions of this system are disabled and not available, this means that the installations remains unprotected for a significant period of time, hence the obligation to look for adequate and permanent solutions. Through this work, we clarify the causes that led to this deactivation, proposing effective solutions for each case, this will allow reactivating them and ensuring a safe and sustainable exploitation.
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Sklab Ramdane, Zennir Youcef, Bendib Riad, “Improvements in the performance of an SIS by bypass reduction on the safety functions”, Algerian Journal of Signals and Systems, Vol. 5, Issue 4, December 2020. pp: 224-231.