网络化控制系统(Networked Control System,简称NCS)研究的是如何通过网络实现闭环控制,是涉及控制科学和计算机网络等多个学科知识的跨学科研究领域.本文将网络化控制系统视为带有时延的采样控制系统,构造了一个无记忆的降阶状态观测器,通过比较观测器输出和系统实际输出来产生残差,从而对网络化系统的控制故障进行了检测.仿真结果表明此方法是可行的.%The networked control system(NCS) deals with how to realize close-loop control through network. It is a multi-subject research region involving control science, computer network, etc. In this paper, the networked control system is regarded as a sampled-data control system with time-delay. A memoryless reduced-order state observer is constructed. Then the residual is generated by comparing the output of the observer with the output of the practical system, and faults of the NCS is thus detected. Simulation result shows the approach is feasible.
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