Finite-Time Adaptive Fuzzy Switching Event-Triggered Control for Nonaffine Stochastic Systems

This article considers the problem of finite-time adaptive fuzzy switching event-triggered control for a class of nonaffine stochastic systems with periodic actuator faults and asymmetric error constraints. First, a framework of semiglobally finite-time stability in probability is established for stochastic systems. Then, unlike the existing observers, an adaptive state observer with faults compensation mechanism is designed to estimate unknown state. In order to balance the systems tracking performance and communication burdens, a switching event-triggered strategy is given to regulate trigger signal and avoids the Zeno behavior effectively. In backstepping process, a nonlinear tracking error-dependent function is constructed to constrain the tracking errors within asymmetric boundaries, and the effects of faults and trigger errors can be compensated completely by the designed finite-time fault-tolerant control strategy. Finally, the effectiveness of presented strategy is further verified by simulation results.