Fault-tolerant tracking control design for a class of T-S fuzzy systems with actuator failures

Abstract

Based on the adaptive control technique, the problem of fault-tolerant tracking control for a class of T-S fuzzy systems with actuator failures is investigated in this study. The considered actuator failure is the loss of effectiveness, an adaptive fault-tolerant control law is proposed based on the online estimation of the actuator failures. For reducing the failure effect on the dynamic system, an adaptive compensation control input is added to the normal control law without fault detection and isolation (FDI) mechanism. According to Lyapunov approach, the dynamic tracking performance of the closed-loop system is optimized and the output responses of the dynamics asymptotically track that in fault case. Finally, simulation results are given to illustrate the effectiveness and potential of our approach.