DETCS下非均匀传输NCS故障调节与通讯的协同设计

Co-design of fault accommodation with communication of nonuniform transmission NCS with DETCS

在离散事件触发通讯机制(discrete event-triggered communication scheme,DETCS)下,针对一类存在执行器时变故障的系统,研究了非均匀传输NCS故障调节与通讯协同设计的问题.首先,基于系统等周期的采样数据,采用时延分析法和Lyapunov稳定性理论,给出了具有鲁棒H_∞性能的状态及故障估计观测器设计方法,实现了对系统状态及连续时变故障的快速准确估计;进一步在DETCS下,基于所获得的故障和状态信息,以求解LMI的方式给出了同时求取具有故障调节能力状态反馈增益矩阵与事件触发权矩阵的方法,实现了故障调节与通讯的协同设计;最后,通过仿真算例验证了所提方法的可行性和有效性.

Aimed at a class of system with time-varying fault in its actuator, the co-design problem of fault accommodation and communication is investigated for a nonuniform transmission NCS with discrete event-triggered communication scheme（DETCS）. Firstly, based on the equi-periodically sampled data of the system＇and employing the method of time-delay analysis and Lyapunov stability theory, the design procedure of observer of state and fault estimation with robust H∞ performance is proposed and quick and accurate estimation of state and continuous time-varying fault is realized. Further, based on the obtained information of the fault and state and solving LMI, the method for simultaneously finding the state feed- back gain matrix and event-triggering weighing matrix is given and the co-design of fault estimation and accommodation is realized. Finally, a simulation example is employed to verify the feasibility and effective- ness of the proposed method.