带PCS的分布式网络化控制系统的故障诊断

提出了带有周期通信序列（PCS）的多输入与多输出分布式网络化控制系统的故障诊断方法通过把故障诊断单元与各子系统之间周期通信序列的变换相当于不同工作模态之间的切换，将带有周期通信序列的系统建模为切换系统．针对此切换系统，将鲁棒故障诊断滤波器的设计问题转化为H∞优化问题，并且采用LMI技术进行求解将系统在无故障与发生故障情况下获得的残差进行比较．结果表明，所提出的故障诊断方法在子系统信息不完全的前提下，仍能检测出系统故障的发生．

Fault Diagnosis of Distributed Networked Control System with PCS

The fault diagnosis of multi-input and multi-output distributed networked control system with periodic communication sequence （PCS） was investigated. Considering the exchange of PCS as the switch between different work modes, the distributed networked control system with PCS was modeled as a switched system. Then the robust fault diagnosis filter design for this switched system was transformed into an H∞ optimal problem, and the LMI technique was applied to solve it. The residuals obtained when the fault happens or not were compared. The result shows that the proposed method can also detect a fault with incomplete information.