基于H_∞滤波器的不确定状态时滞系统鲁棒故障诊断  

Robust Fault Detection for Uncertain Time delay Systems Based on H_∞ Filter

作　　者：白雷石[1] 田作华[1] 施颂椒[1] 

机构地区：[1]上海交通大学自动化系,上海200030

出　　处：《信息与控制》2005年第2期163-166,171,共5页Information and Control

摘　　要：针对一类具有未知输入和模型不确定性的动态时滞系统,基于H∞滤波器技术研究了系统的鲁棒故障检测问题.利用H∞控制理论得到了系统的故障检测滤波器设计方法,证明了故障检测残差对不确定性具有范数界的鲁棒性;然后利用线性矩阵不等式(LMI)技术来求解此时滞独立H∞滤波器设计问题,并给出了该滤波器解存在的条件以及滤波器增益矩阵的求解方法.最后,通过一个仿真例子验证了本方法的有效性.A robust fault detection scheme is proposed for a class of time delay systems with both unknown inputs and modeling uncertainties. The fault detection filter is designed by using H_∞ control theory. The robustness of the residual to uncertainty is proved and then linear matrix inequality (LMI) approach is used to derive the existence conditions of the robust fault detection filter (RFDF), which is independent of time delay. Finally, an example is given to demonstrate the effectiveness of the proposed approach.

关 键 词：不确定时滞系统 鲁棒故障诊断 滤波器 线性矩阵不等式 H∞控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]