执行器故障情况下网络控制系统H_∞容错控制

H_∞ fault-tolerant control for networked control system in the case of actuator fault

研究了一类有数据包丢失的网络控制系统H∞容错控制问题.在前向网络通道和后向网络通道中存在数据包随机丢失的情况,将具有执行器连续增益故障和外部扰动的网络控制系统建模为有限状态的马尔可夫跳变线性系统.利用容错控制理论和马尔可夫跳变线性系统理论,给出了网络控制系统随机稳定且满足H∞性能的充分条件,进一步通过锥补线性化方法,给出了控制器设计方法.仿真结果验证了该设计方法的有效性.

The problem of H∞ fault-tolerant control for a class of networked control system with stochastic packet dropout is discussed.There exists the situation of stochastic packet dropout in the forward network channel and backward network channel,the networked control system with the actuator continuous gain faults and external disturbance is modeled as finite state markovian jump linear system,the necessary condition such that networked control system satisfy stochastically stable and the H∞ performance is given by using fault-tolerant theory and markovian jump linear system theory.Thene,the controller design method is proposed via the cone complementary linearization method.Finally,the numerical example and simulations have demonstrated the validity of the proposed method.