一种基于最优鲁棒故障检测滤波器的网络化控制系统故障检测方法

研究了时延可能大于采样周期情况下的网络化控制系统的故障检测问题. 首先, 时延造成的影响被转化成了范数有界的不确定性, 接下来现有的基于参考模型的连续系统故障检测方法被推广到离散系统, 并应用于前面得到的含参数有界不确定性的系统. 本文提出的算法可以通过 Matlab LMI 工具箱实现. 仿真结果证实了算法的有效性.

Fault Detection of Networked Control Systems Based on Optimal Robust Fault Detection Filter

Fault detection of networked control systems (NCSs)with random and unknown network-induced delay that might be larger than one sampling period is studied in this paper. First,influence caused by network-induced delay is transformed into structured modeling error,then an existent continuous time domain robust fault detection method based on reference model is extended to discrete time domain and applied to fault detec- tion of networked control systems.The proposed method can be easily implemented by Matlab LMI toolbox,and its performance is finally evaluated by a simulation example.