传感器饱和约束下网络控制系统丢包故障检测  

Fault Detection of Networked Control Systems with Packet Dropout Subject to Sensor Saturation

作　　者：沈喆[1] 杨光红[1] 孙鹏[2] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110819 [2]中国刑警学院声像技术系,辽宁沈阳110085

出　　处：《东北大学学报（自然科学版）》2011年第7期913-916,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(60974043);国家创新研究群体科学基金资助项目(60821063)

摘　　要：研究了一类网络控制系统丢包情况下传感器输出饱和的故障检测问题.首先假设网络控制系统丢包存在于传感器到控制器之间,并用两个独立的伯努利分布序列来描述.然后在传感器输出饱和约束条件下设计了一个故障检测观测器,用来加大故障对残差的敏感性并减小干扰对故障的影响.最后基于线性矩阵不等式技术,得到一个鲁棒故障检测系统有界均方稳定的充分条件,并满足了H∞性能指标.数值算例表明了在丢包和传感器饱和约束情况下所提方法的有效性.The fault detection problem was considered for a class of networked control systems with packet dropout subject to sensor saturation.The packet dropout was assumed to be exist in the sensor-to-controller link,and two independent Bernoulli distributed white sequences were used to describe the packet dropouts.A fault detection observer was designed to increase the fault sensitivity and attenuate the effects of disturbances.Based on linear matrix inequalities（LMIs） techniques,a sufficient condition was derived such that the robust fault detection system is uniformly bounded mean-square stable and satisfies the prescribed H∞ performance constraint.A numerical example was given to illustrate the effectiveness of the proposed method.

关 键 词：故障检测 网络控制系统 丢包 传感器饱和 H∞观测器 线性矩阵不等式 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]