具有随机丢包的一类网络控制系统的故障检测

针对存在随机数据包丢失的网络环境,研究了一类网络控制系统的故障检测问题.考虑随机丢包同时发生在传感器与控制器以及控制器与执行器之间,将网络控制系统建模为含有4个模态的马尔可夫跳变线性系统.基于此类模型,构造了系统的残差发生器,相应的故障检测问题转化为H∞滤波问题.利用马尔可夫跳变线性系统理论,设计了故障检测滤波器,使得...

Fault detection for networked control system with random packet dropout

With the presence of stochastic packet dropout effects in the network, the problem of fault detection filter design for a class of networked control system is investigated. When the random packet dropout occurs in both the channel between sensor and controller and the channel between controller and actuator, we model the networked control system as a Markovian jump linear system with four operation modes. Based on this model, the residual generator is developed and the problem of fault detection and isolation is formatted as a problem of H-infinity filtering. By using the theory of Markovian jump linear system, we propose a design method for fault detection filter, which makes the residual generation system stable in the mean-square sense, satisfying a prescribed disturbance attenuation level. The numerical example shows that the proposed fault detection filter is sensitive to the fault but robust to exogenous disturbance.