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This paper focuses on the synthesis of adaptive fuzzy fault tolerant controller which combines a sliding mode controller and a Proportional Integral controller (PI) for a class of MIMO underactuated nonlinear systems with external disturbances. The proposed control law treats the underactuated systems on their original non square form without squaring them by adding or eliminating variables. The uncertain...
In this work, we study the detection and estimation problem of sensor and actuator faults (SAF) for nonlinear systems represented by Takagi-Sugeno (T-S) fuzzy models subject to an Unknown Bounded Disturbance (UBD). Simultaneously, we study the estimation of the states. To do this, we design an adaptive descriptor observer to jointly estimate state and SAF vectors. This observer not only lead to estimate...
This paper investigates stabilization for a class of uncertain discrete-time switched TS fuzzy systems with with time-varying delays. By using Gershgorin's disc theorem, a new delay-independent criteria for time-delay systems are established to design a state feedback controller by using induced norm control, which guarantee that the corresponding closed-loop system is robustly asymptotically stable...
This paper deals with the active control in vehicle to improve the safety and its stability. Vehicle model based on roll, yaw and lateral dynamics is used. The vehicle dynamics is represented by a LPV (Linear Parameter Varying) and the corresponding state-space model is affected by both polytopic and norm-bounded uncertainties. It is aimed to compute K, associated with the static output feedback,...
This paper is concerned with the problem of robust discrete-time sliding-mode control for a class of uncertain descriptor systems with time-varying delay and external disturbance. A new sliding function is proposed and sufficient conditions are derived to guarantee that the sliding mode dynamics is robustly admissible. Moreover, a quasi-sliding mode controller is established to satisfy the reaching...
This paper deals with the robust stability and robust stabilization problems for nonlinear systems with time-delay and norm bounded uncertainties which can be represented by Takagi-Sugeno (T-S) uncertain fuzzy model with time-delay. Based on fuzzy weighting-dependent Lyapunov-Krasovski functional approach and the free weighting matrix method, stability sufficient conditions are proposed and then extended...
This communication deals with the robust H∞ stabilization of the semilinear partial differential system using Lyapunov theory. The time derivative of this Lyapunov function can be made strictly negative definite by an appropriate choice of controls. In general, it is difficult to control partial differential systems. In order to simplify the design procedure of control law, a fuzzy partial differential...
This paper investigates the problem of sliding mode control (SMC) for a class of uncertain Takagi-Sugeno (TS) fuzzy descriptor systems with time-varying delay. An integral-type sliding function is proposed and a new delay-dependent stability criterion, in terms of linear matrix inequality(LMI), is derived which guarantees to the sliding mode dynamics to be regular, impulse free and stable for all...
This paper proposes an algorithm of maximum power point tracking (MPPT) applied for photovoltaic (PV) power generation systems based on boost DC-DC converter and robust control tools using Linear Matrix Inequalities (LMI) technique. In this study, the nonlinearities and the parametric uncertainties of the system are taking into account. The strategy of this algorithm consists on the generation of...
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