Browsing by Author "Salmi, Salah"

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    Contribution to induction motor control for electric traction based on intelligent techniques
    (University of Oum El Bouaghi, 2021) Zairi, Raid; Salmi, Salah
    The negative impact of CO2 emissions from diesel is forcing the electrification of rail systems to reduce gas emissions. In the case of electric traction the induction motor is considered in many applications as the best solution. This paper presents an intelligent strategy to improve the control performance of the asynchronous motor in a railway traction chain. The technique used to control this motor is IFOC because of its good suitability on the one hand its robustness, of which speed, torque and flux play an essential role in terms of the dynamic parameters of the system. The maximum torque and efficiency are obtained by controlling the speed by the conventional PI controller and that of fuzzy logic and neural network. The simulation results obtained by Matlab/Simulink show that the artificial intelligence ensures the best performance in terms of robustness, stability and fidelity during the sudden variation of the speed and torque.
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    Microwave Sensor for Liquid Mixture Identification based on Metamaterial based on Double Concentric Elliptical Complementary Split Ring Resonator
    (University of Oum El Bouaghi, 2021) Halfaya, Ahmed; Lashab, Mohamed; Salmi, Salah; Soufi Youcef
    In this paper a Microstrip line coupled double concentric elliptical complementary split-ring resonator etched in the ground plane is used to create a sensor. The operating frequency of presented metamaterial sensor is from 1Ghz to 2 Ghz .The sensor is designed and simulated with the commercial software CST Studio Suite . The liquid sample's complicated dielectric permittivity affects the resonance frequency and bandwidth. We can build an empirical link between sensor resonance and sample permittivity using data collected from simulations. the resonance frequency is shifted from 1.50 down to1.49 Ghz. On the basis of variations in the resonance frequency and peak attenuation of the transmission response [ l S21 l max] on resonance the sensor estimates the complex permittivity of a liquid. The proposed sensor is easily to fabricated and reusable resonator.