Robust reliable control for uncertain time-delay switched fuzzy systems via observers switching

Abstract

It is presented a model of uncertain time-delay switched fuzzy systems, which each subsystem of switched system is an uncertain fuzzy system with time-delay, and the robust reliable control problem is studied. Parametric uncertainty and time-delay terms are employed in building the T-S model for the reliable controlled plant for the purpose of close representation of the original plant system. Address the reliable control issue of uncertain time-delay switched fuzzy systems based on observers switching. When the actuators are serious failure — the residual part of actuators can not make original system stability, using switching technique depend on the states of observers and Lyapunov function method, dynamic fuzzy reliable controller is built to ensure the relevant closed-loop system is asymptotic stability. Sufficient conditions for the uncertain switched fuzzy system to reliable control against actuators serious failure in the closed-loop systems are derived in terms of observers switching strategy. A simulation offered the effectiveness of the proposed method.