具有随机丢包的网络控制系统故障检测  

Fault Detection for Networked Control Systems with Packet Dropouts

作　　者：俞奇慧 杨晓飞 YU Qihui;YANG Xiaofei(College of Electronics and Information,Jiangsu University of Science and Technology,Zhenjiang 212003)

机构地区：[1]江苏科技大学电子信息学院

出　　处：《舰船电子工程》2020年第1期121-126,共6页Ship Electronic Engineering

摘　　要：对于具有随机丢包的网络控制系统,研究了当系统存在外部干扰时的故障检测问题。考虑用两种不同的伯努利(Bernoulli)分布序列分别描述传感器到故障检测滤波器(FDF)通道,故障检测滤波器到执行器通道上的随机丢包;构造基于观测器的故障检测滤波器,并使用线性矩阵不等式(LMIs)来推导FDF存在的充分条件,使系统均方稳定且满足一定的扰动抑制水平;利用仿真验证该方法的有效性。The problem of fault detection is considered for networked control systems with random packets loss and external interference. Both sensor to fault detection filter and fault detection filter to actuator packet dropouts are described by two different Bernoulli distributed sequences,an observer-based fault detection filter is constructed. A sufficient condition for the existence of FDF is derived by using the linear matrix inequalities(LMIs),which makes the error systems exponentially mean-square stable and achieve a certain disturbance rejection. The simulation results illustrate the effectiveness of the proposed approach.

关 键 词：伯努利分布序列 网络控制系统 数据丢包 故障检测滤波器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]