不确定时滞的无线网络控制系统的故障检测

摘要

This paper addressed the problem of the fault detection for a class of wireless networked control systems with uncertain time delay. Since the delay is uncertain, the system can be modeled as a Markov jump systems through augmented vector method. On the basis of the model above,this paper designed a observer-based filter, by choosing the appropriate filter gain, the filter was mean square convergent if there was no disturbance, and the filter would satisfy certain H∞ robust performance if disturbance exists. When a fault occurs, the fault detection system would detect the fault rapidly. Simulation examples verify all results.%研究了一类具有不确定时滞的无线网络控制系统的故障检测的问题.由于时滞是不确定的,可以通过增广向量法将系统建模为马尔科夫跳变系统.在此基础上,设计了观测滤波器,满足了滤波器在没有扰动的情况下均方指数稳定,在有扰动时,满足一定的H∞鲁棒性能.当系统发生故障时,故障检测系统立即检测出故障.所得结果通过仿真示例得到了验证.