Wyniki wyszukiwania - Biblioteka Nauki

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New approach to linguistic fuzzy modeling of induction motor fed by PWM voltage source inverter

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Barazane L. , Krishan M. M. , Khwaldeh A. , Sicard P.

Archives of Control Sciences

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2007

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tom Vol. 17, no. 2

209-235

EN

In this paper, a new approach of linguistic fuzzy modeling proposed by Ben-Ghalia et al. is applied to induction motor. Thus, a classical model is first given together with the most used asynchronous motor control strategy, which is the pole assignment. After more, in order to minimize the dependence of the system to parameter variations and external perturbations, and reduce the number of variable states, a new model of the original system is proposed. This model is too simple and is suitable to cognitive approach such as fuzzy modeling. Then, fuzzy modeling of an uncertain system using the approach of Ben-Ghalia et al. to reduce the effects of imperfections of the classical modeling are introduced. In addition, their applications in the fuzzy sliding mode control of the asynchronous motor are presented. Finally, Simulation results reveal some very interesting features and show that the proposed fuzzy model has great potential for use as an alternative to the approximation of the conventional model of induction motor taking into account the effect of system model uncertainties and gives a good performances in sliding mode control.

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Contribution to variable structure control based on the approach of fuzzy modeling of Ben-Ghalia for induction motor with Luenberger observer

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Barazane L. , Khwaldeh A. , Krishan M. M. , Sicard P.

Archives of Control Sciences

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2008

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tom Vol. 18, no. 4

453-476

EN

Sliding mode and fuzzy logic control have been combined together in a variety of ways. In this paper, a novel direction to design fuzzy sliding controllers is proposed based on the approach of Ben-Ghalia et al. Which is able to provide a fuzzy set based on a decoupled and linear system obtained after the application of the feedback- linearization control to the model of an induction motor. On the other hand, a Luenberger observer is conceived in the present work to observe the rotor flux in the motor which is too important to permit the application of fuzzy modeling approach and ensure the optimal and required performances . Furthermore, another objective to use such an observer consists in stabilizing the system and rejecting the disturbances when the system is subjected to uncertainties. Furthermore, to overcome the problem of the chattering phenomenon generated by the application of conventional sliding mode control applied to the cascade structure of the motor, the approach of fuzzy sliding mode control based on the fuzzy modelling proposed by Ben-Ghalia is used. The robust fuzzy control design is made feasible without resorting to model simplification or imposing restrictive conditions on the system uncertainty. Finally, simulation results proves the capability of the proposed process to ensure a good performances and robustness which is the principal aim of this research

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Robust fuzzy sliding mode control implementation for DC motor

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Zaghrat F. , Gasbaoui B. , Bouchiba B. , Bousserhane I. K. , Chaoufi I.

Przegląd Elektrotechniczny

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2022

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tom R. 98, nr 5

97--102

EN

This article presents a fuzzy sliding mode control (FSMC) to improve the speed performance of DC motor in direct and opposite directions, where two FSMC approaches are developed and implemented based on the DSpace 1104 board and compared to SMC. Although, the SMC ensures big robustness and excellent disturbance rejection it has a limited application because of the chattering phenomenon that is the main downside of SMC. Firstly, the SMC design speed and current controllers are presented. Secondly, two FSMC approaches are shown. In the first approach, we have a similar control rule as the SMC with the exceptions of the k and ksi of discontinuous control signal parameters which are adapted by a fuzzy inference system. In the second approach, totally we delete the discontinuous control and replace it with an FLC. This article focuses on the design of the FSM speed controller and the estimation of the resistive torque. The numerical and experimental validation results of the FSM second approach have shown a robust mechanism performance with a fast dynamic response, good tracking of the reference speed, zero overshoot compared to SMC (1.22%) and FSM first approach (0.09%), and good rejection Disturbance. Besides, the FSM second approach has the best reduction of chattering phenomenon compared to the FSM first approach and classical SMC.

PL

W tym artykule przedstawiono rozmytą kontrolę trybu ślizgowego (FSMC) w celu poprawy wydajności prędkości silnika prądu stałego w kierunkach bezpośrednich i przeciwnych, w której opracowano i wdrożono dwa podejścia FSMC w oparciu o płytę DSpace 1104 i porównano z SMC. Chociaż SMC zapewnia dużą wytrzymałość i doskonałe tłumienie zakłóceń, ma ograniczone zastosowanie ze względu na zjawisko drgania, które jest główną wadą SMC. W pierwszej kolejności przedstawiono projektowe kontrolery prędkości prądu SMC. Po drugie, pokazano dwa podejścia FSMC. W pierwszym podejściu mamy podobną zasadę sterowania jak SMC, z wyjątkiem parametrów k i ksi nieciągłych parametrów sygnału sterującego, które są dostosowywane przez rozmyty system wnioskowania. W drugim podejściu całkowicie usuwamy nieciagłą kontrolę i zastępujemy ją FLC. W tym artykule skupiono się na konstrukcji regulatora prędkości FSM i estymacji momentu rezystancyjnego. Numeryczne i eksperymentalne wyniki walidacji drugiego podejścia FSM wykazały solidne działanie mechanizmu z szybką odpowiedzia dynamiczną, dobrym śledzeniem prędkości odniesienia, zerowym przeregulowaniem w porównaniu z SMC (1,22%) i pierwszym podejściem FSM (0,09%) oraz dobrą odrzucenie Zakłócenie. Poza tym drugie podejście FSM ma najlepszą redukcję zjawiska drgania w porównaniu z pierwszym podejściem FSM i klasycznym SMC.