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var str = 'Design and Simulation of a WDM-OADM Optical Ring Communication System';
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]]>
SMF]]>
WDM]]>
DWDM]]>
OADM]]>
EDFA]]>
DCF]]>
optical fiber network]]>
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.]]>
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var str = 'ZITOUNI, A.';
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]]>
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var str = 'RECIOUI, A.';
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]]>
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var str = 'SICHONE, A.';
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]]>
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var str = 'SENOUSSAOU, A.';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 3 (2017); 140-148]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i3]]>
Laboratory of Signals and Systems, Algeria]]>
2017-09-15]]>
Copyright (c) 2017 A. ZITOUNI, A. RECIOUI, A. SICHONE, A. SENOUSSAOU]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/40/28]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/40]]>
10.51485/ajss.v2i3.40]]>
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var str = 'Induction Motor Faults Detection Using a Statistical Procedure Based-Approach';
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]]>
Induction motor]]>
fault detection]]>
variance of three phase stator currents’ instantaneous variance]]>
Confidence Interval]]>
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.]]>
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var str = 'Kouadri, A.';
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]]>
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var str = 'Kheldoun, A.';
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]]>
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var str = 'Hamadache, M.';
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]]>
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var str = 'Refoufi, L.';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 3 (2017); 130- 139]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i3]]>
Laboratory of Signals and Systems, Algeria]]>
2017-09-15]]>
Copyright (c) 2017 A. Kouadri, A. Kheldoun, M. Hamadache, L. Refoufi]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/39/27]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/39]]>
10.51485/ajss.v2i3.39]]>
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var str = 'DVR and D-STATCOM Mitigation Techniques of Power Quality Effects on Induction Motors';
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]]>
Power quality]]>
mitigation]]>
induction motor]]>
D-STATCOM]]>
DVR]]>
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.]]>
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var str = 'DEKHANDJI, Fatma Zohra';
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]]>
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var str = 'DOUCHE, Mohamed';
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]]>
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var str = 'ZEBIDI, Nacer';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 2 (2017); 110- 129]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i2]]>
Laboratory of Signals and Systems, Algeria]]>
2017-06-15]]>
Copyright (c) 2017 Fatma Zohra DEKHANDJI, Mohamed DOUCHE, Nacer ZEBIDI]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/38/26]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/38]]>
10.51485/ajss.v2i2.38]]>
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var str = 'Optimal placement of power factor correction capacitors in power systems using Teaching Learning Based Optimization';
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]]>
POWER FACTOR]]>
Capacitor placement]]>
TLBO]]>
Optimization]]>
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.]]>
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var str = 'Bouaraki, Mouloud';
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]]>
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var str = 'RECIOUI, Abdelmadjid';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 2 (2017); 102- 109]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i2]]>
Laboratory of Signals and Systems, Algeria]]>
2017-06-15]]>
Copyright (c) 2017 Mouloud Bouaraki, Abdelmadjid RECIOUI]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/37/25]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/37]]>
10.51485/ajss.v2i2.37]]>
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var str = 'Light Flicker Frequencies in the HID lamps';
document.write(linkifyHtml(str, options));
]]>
Acoustic resonance]]>
Fast Fourier Transform FFT]]>
photodiode]]>
Arc Motion]]>
MOS image sensors]]>
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.]]>
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var str = 'Amer, Lakhdar';
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]]>
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var str = 'Hamouda, Messaoud';
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]]>
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var str = 'Benachiba, Chellali';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 2 (2017); 96-101]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i2]]>
Laboratory of Signals and Systems, Algeria]]>
2017-06-15]]>
Copyright (c) 2017 Lakhdar Amer, Messaoud Hamouda, Chellali Benachiba]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/36/24]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/36]]>
10.51485/ajss.v2i2.36]]>
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var str = 'Modeling and Diagnostic of Permanent Magnet Synchronous Machine under Insulation Failure Condition';
document.write(linkifyHtml(str, options));
]]>
PMSM]]>
inter-turn]]>
short-circuit]]>
modeling]]>
ESA]]>
EPVA]]>
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.]]>
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var str = 'CHOUROUK, BOUCHAREB';
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]]>
var options = {
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var str = 'MOHAMED-SAID, NAIT-SAID';
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]]>
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var str = 'FETHI, LAHMER';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 2 (2017); 86- 95]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i2]]>
Laboratory of Signals and Systems, Algeria]]>
2021-02-02]]>
Copyright (c) 2017 BOUCHAREB CHOUROUK, NAIT-SAID MOHAMED-SAID, LAHMER FETHI]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/35/23]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/35]]>
10.51485/ajss.v2i2.35]]>
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var str = 'Design of Standalone Micro-Grid Systems Using Teaching Learning Based Optimization';
document.write(linkifyHtml(str, options));
]]>
Renewable energies]]>
standalone systems]]>
TLBO]]>
Homer]]>
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).]]>
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var str = 'RECIOUI, Abdelmadjid';
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]]>
var options = {
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var str = 'DASSA, Khaled';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 2 (2017); 75- 85]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i2]]>
Laboratory of Signals and Systems, Algeria]]>
2017-06-15]]>
Copyright (c) 2017 Abdelmadjid RECIOUI, Khaled DASSA]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/34/22]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/34]]>
10.51485/ajss.v2i2.34]]>
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var str = 'Fault Diagnostic of Doubly-Fed Induction Generator in Stator Inter-Turn Short Circuit Based Wind Turbine';
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]]>
Wind Energy]]>
DFIG]]>
short circuit]]>
vector control]]>
inter-turn short-circuit]]>
fault diagnostic]]>
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]]>
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var str = 'Boumalha, N.';
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]]>
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var str = 'Hachelef, R.';
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]]>
var options = {
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var str = 'Kouchih, D.';
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]]>
var options = {
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var str = 'Tadjine, M.';
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]]>
var options = {
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var str = 'Boucherit, M.S.';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 2 (2017); 63-74.]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i2]]>
Laboratory of Signals and Systems, Algeria]]>
2017-06-15]]>
Copyright (c) 2017 N. Boumalha, R. Hachelef, D. Kouchih, M. Tadjine, M.S. Boucherit]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/33/21]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/33]]>
10.51485/ajss.v2i2.33]]>
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var str = 'IMC Multi-Controller Strategies applied on a Manipulator Robot';
document.write(linkifyHtml(str, options));
]]>
Modeling]]>
Multi-control approach]]>
Multi-controller contro]]>
Fractional PID controlle]]>
IMC controller]]>
LQG controller]]>
Oustaloup Recursive Approximation method]]>
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.]]>
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};
var str = 'Zennir, Y.';
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]]>
var options = {
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var str = 'Guechi, E.';
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]]>
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var str = 'Chetioui, L.';
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]]>
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var str = 'Bendib, R.';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 1 (2017); 51-62]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i1]]>
Laboratory of Signals and Systems, Algeria]]>
2017-03-15]]>
Copyright (c) 2017 Y. Zennir, E. Guechi, L. Chetioui, R. Bendib]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/32/20]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/32]]>
10.51485/ajss.v2i1.32]]>
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var str = 'False Alarms Rate Reduction Using Filtered Monitoring Indices';
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False Alarms Rate, Fault Detection and Diagnosis]]>
Fuzzy Logic Based Filter]]>
Median Filter]]>
Principal Component Analysis (PCA)]]>
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.]]>
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var str = 'AMMICHE, M.';
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var str = 'KOUADRI, A.';
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]]>
Algerian Journal of Signals and Systems ; Vol. 2 No. 1 (2017); 40- 50]]>
2676-1548]]>
2543-3792]]>
10.51485/ajss.v2i1]]>
Laboratory of Signals and Systems, Algeria]]>
2017-03-15]]>
Copyright (c) 2017 M. AMMICHE, A. KOUADRI]]>
https://creativecommons.org/licenses/by-nc/4.0]]>
https://ajss.dz/index.php/ajss/article/view/31/19]]>
application/pdf]]>
eng]]>
info:eu-repo/semantics/article]]>
info:eu-repo/semantics/publishedVersion]]>
Peer-reviewed Article]]>
https://ajss.dz/index.php/ajss/article/view/31]]>
10.51485/ajss.v2i1.31]]>