带有输出传输时延的网络化控制系统基于观测器的FDI设计

摘要

将网络控制系统(NCS)看成一个具有输出时延的采样控制系统,并建立了其数学模型.接着构造了一个故障观测器,产生了系统故障的指示器残差.然后在此基础上介绍了一种故障检测和分离(FDI)的方法,总结了FDI观测器的设计算法.最后,一个实例证明了此方法的可行性.%Networked control system(NCS)was regarded as a sampled-data control system with outputtime-delay and amathematical model was set up.So a fault observer was constructed,andthe indicator of systemfaults-residual was generated.Then fault detection and isolation(FDI)approach based on this observer was introduced.The design algorithm of the FDI ob-server was summarized.At last,an example is gjven to show the approach is feasible.