含时滞记忆的非线性时滞系统满意容错控制

针对一类基于T-S模糊模型描述的非线性时滞系统,研究在一般执行器故障模式下的含时滞记忆的鲁棒H∞容错控制器设计问题.针对任意连续型执行器故障模式,采用并行分布式补偿原理设计含记忆型状态反馈控制器,给出非线性时滞系统在执行器发生故障情况下的鲁棒镇定准则.然后给出H∞性能指标约束下的满意容错控制器的设计方法和设计步骤.提出的含时滞记忆的状态反馈控制方法可以确保当执行器发生故障时,闭环系统不仅具有渐近稳定性,而且有一定的抗扰动性能,状态反馈控制器设计的保守性较不含时滞记忆控制器设计方法大大降低.仿真实例验证了鲁棒容错控制策略的有效性.

Satisfactory Fault-tolerant Control with Time-delay Memory for Nonlinear Time-delay Systems

The problem of robust reliable control for nonlinear time-delayed system against actuator failures based on T-S models with H∞ constraint is investigated.For continuous actuator failures of nonlinear time-delayed system,the distributing compensate principle is adopted to design the state-feedback controller with time-delay memory.The stabilization criteria for nonlinear time-delay described by fuzzy T-S model are proposed,and then a robust H∞ tolerant controller is design against actuator failures to guarantee the closed-loop system dynamic and stable performance.The proposed method not only ensure the stability of the close-loop system against actuator failures,but also improve the resistibility for outside disturbance.Finally,simulation example shows the validity and effectiveness of the proposed method.