一类不确定切换模糊系统的鲁棒可靠自适应控制

提出了一类不确定切换模糊系统的模型并研究其鲁棒镇定问题,模型中的每个子系统均为不确定模糊系统.对于系统的外部干扰具有未知上界的情况,当执行器"严重失效"而未失效部分不能镇定原系统时,使用切换技术和多Lyapunov函数方法构造出模糊鲁棒自适应可靠控制器,使得相应的闭环系统对所有可能的不确定性和所有允许的执行器失效一致最终有界,同时设计了可以实现闭环系统一致最终有界的切换律.仿真结果表明了所设计方法的可行性与有效性.

Robust and Reliable Adaptive Control of a Class of Uncertain Switched Fuzzy Systems

A model of a class of uncertain switched fuzzy systems is developed,in which each and every subsystem is uncertain and fuzzy,and the robust stabilization of the uncertain switched fuzzy system is studied.When the upper bounds of external disturbances are unknown and the actuator seriously failed insomuch that its undamaged parts are unable to keep the system stable,a robust,reliable and fuzzy adaptive controller is built using the switching technique and multiple Lyapunov function method to enable the relevant closed-loop system to be uniformly ultimately bounded for all possible uncertainties and all actuators of which the failure is permissible.Moreover,the switching law is designed to enable an uncertain switched fuzzy system to be uniformly ultimately bounded.Simulation results showed the feasibility and effectiveness of the method.