Fuzzy tracking control for nonlinear time-delay systems subject to actuator saturation

This paper deals with the problem of fuzzy tracking control for a class of nonlinear time-delay systems subject to actuator saturation. The nonlinear systems under consideration are described by T-S fuzzy model, and the time delays are assumed to be constant. The purpose is to design state-feedback fuzzy controllers such that the resulting closed-loop system is locally bounded and its state follows a reference signal. Delay-dependent conditions for the existence of desired controllers are obtained by using the H_∞ control method together with a simplified LMI approach. A numerical example is provided to demonstrate the effectiveness of the proposed design method.