Robust dissipative tolerant-control of Takagi-Sugeno fuzzy systems with actuator saturation
执行器饱和T-S模糊系统的鲁棒耗散容错控制

The problem of robust tolerant-control for a class of Takagi-Sugeno(T-S) fuzzy systems with time-varying state delay and actuator saturation is investigated. By defining a class of delay-dependent Lyapunov function and a given ellipsoid with state constraint, the set of invariance conditions and sufficient conditions for the existence of the robust dissipative tolerant controllers are derived in terms of LMIs. The design results of the control scheme not only provide a unified framework for H-infinity control and passive control, but also ensure the closed-loop systems to be stable and reliable when the actuator faults occur. Simulations of the control of a time-delay truck-trailer system show the effectiveness of the proposed method.