Assil Ayadi

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This paper present a sliding mode controller of an electropneumatic system. In order to obtain a good position and pressure tracking and to reduce the chattering phenomenon, a proportional derivative PD sliding surface is used with an integral law. Finally, simulation results are presented to test the effectiveness of this proposed controller comparing with(More)
The current work, we present a free chattering sliding mode control with an adaptive algorithm to track pneumatic actuator position. The Sliding Mode Control (SMC) is robust against uncertainties and external disturbance. However, it may induce undesirable oscillation in the control signal. To overcome this drawback, we replace the discontinuous term of SMC(More)
This paper deals with the H<sub>&#x221E;</sub> control of nonlinear fuzzy descriptor system described by Takagi-Sugeno fuzzy models. In the first step, we present a stability analysis of nonlinear fuzzy descriptor system. The stability conditions are given in LMI form. In the second step, we have developed H<sub>&#x221E;</sub> PDC control law in order to(More)
In this work, we develop a robust controller based on adaptive sliding mode strategy to control the position of electro-pneumatic system. The Sliding Mode Control (SMC) is renowned for its precision, robustness against uncertainties and disturbance. However, it suffers from chattering phenomenon. To overcome it, we substitute the discontinuous term of SMC(More)
Nonlinear control laws become the most important strategies to control electropneumatic actuator. To get high accuracy and performance, we need the knowledge of all state variables. This paper focus on the design of high gain observer which estimates the unmeasured states (velocity and pressure in chamber N) from the measurements of the position and(More)
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