不确定非线性时滞切换系统的鲁棒容错控制

Robust Fault-Tolerant Control for Uncertain Time-delay Switched Nonlinear Systems

研究了一类结构参数不确定性和未知非线性扰动的非线性时滞切换系统的鲁棒容错控制问题.利用凸组合技术,设计出状态反馈控制器和相应的切换策略,使得闭环系统是全局渐近稳定的.同时当系统的执行器失效时,通过预先给定的失效集,对于所有发生在给定失效集的执行器失效的情况下,使得闭环系统均是全局渐近稳定的.最后通过仿真算例验证了所设计方法的可行性和有效性.

In this paper, the problem of robust fault-tolerant control for a class of uncertain time-delay switched nonlinear systems with structural parameters uncertainties and unknown nonlinear disturbance is studied. Based on convex combination technique, state feedback controllers and a switching law are designed to make sytems be globally asymptotically stable. Under the circumstance of actuator failures, a pre-specified failure set of actuators is introduced and the closed-loop systems are shown to be asymptotically stable for all possible actuator failures. At last, simulation results verified the feasibility and validity of the designed method.