Observer Based on SMC for DOSs

Introduction

Over the past decades, much attention has been focused on the problems of robust control for uncertain standard state-space systems, refer to [10, 11, 68, 73, 278] and so on. Furthermore, the state observer design problem has been also paid considerable attention at the same time, for example [163, 164, 165, 280]. A robust non-fragile H _∞ observer-based control has been investigated for continuous-time delayed systems [31]. Based on input-output linearization method, a kind of state observers has been presented for nonlinear systems in [128]. Some T-S fuzzy observers have been proposed based on some relaxed stability conditions [158]. Variable structure control strategy by using sliding-mode concept has been widely studied and developed for control and state estimation problems since the works of Utkin in [232]. A robust predictor based SMC for discrete systems has been designed in [260]. The problem of SMC for continuous systems has been investigated in [259] and [211]. The robust adaptive SMC for discrete systems has been given in [265]. Sensorless SMC of induction motors has been considered in [195]. Moreover, some problems of SMC and identification for uncertain stochastic systems have been investigated in [13].