Adaptive fuzzy PI tracking control for a class of switched nonlinear systems

In this paper, the adaptive fuzzy proportional-integral (PI) tracking control problem for a class of switched nonlinear systems with unknown nonlinear functions and external disturbances is studied. By using backstepping method with fuzzy logic systems, an adaptive fuzzy PI tracking controller is proposed, which has a simple structure and a clear physical meaning. The stability analysis of the closed-loop switched systems is established via common Lyapunov function, and all the closed-loop signals and tracking error are bounded. Finally, two example are employed to verify the effectiveness of the proposed scheme.