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针对存在时延和丢包的网络化控制系统,同时考虑参数不确定性和有限能量外部扰动影响,研究了执行器失效时系统具有H∞保性能的鲁棒容错控制问题.将丢包当作一种特殊时延,考虑综合时延的区间快变特性,采用状态反馈控制策略,通过构造适当的李雅普诺夫泛函,推证出闭环系统对执行器失效故障具有较小保守性的鲁棒H∞保性能容错能力的时滞依赖充分条件,并以求解线性矩阵不等式的方式给出了最优控制器的设计方法.最后以一个仿真算例验证了所述方法的可行性和有效性.
Considering the influence of parameter uncertainty and external disturbances of finite energy, a networked control system with delay and packet loss is considered, and the robust fault-tolerant control problem with H∞-guaranteed performance in the case of actuator failure is studied. A kind of special time delay, considering the fast changing characteristic of the integrated time delay, adopts the state feedback control strategy and constructs the appropriate Lyapunov functional, and concludes that the closed-loop system has less conservative robust actuator failure The sufficient condition of delay-dependent H∞ guaranteed fault-tolerant capability is given, and the optimal controller design method is given in the way of solving linear matrix inequalities. Finally, a simulation example is given to verify the feasibility and effectiveness of the proposed method.