基于H_2/H_∞滤波器的鲁棒故障检测方法  

Robust fault detection method based on H_2/H_∞ filter

作　　者：窦立谦[1] 李俊芳[1,2] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]天津理工大学自动化学院,天津300384

出　　处：《天津理工大学学报》2010年第2期19-22,共4页Journal of Tianjin University of Technology

基　　金：国家自然科学基金(60874073;60574055);高校博士学科点专项科研基金(20050056037);天津市重点攻关项目(06YFGZGX01700)

摘　　要：研究受到能量有界干扰输入信号和白噪声干扰信号同时扰动情况下的线性时不变系统的鲁棒故障检测问题,提出混合H2/H∞滤波器的鲁棒故障检测的方案,设计残差产生器,利用线性矩阵不等式(LMI)来求解H2/H∞滤波器增益矩阵;在此基础上,设计了故障检测的域值,实现了对误差的鲁棒检测.最后,通过仿真实例来验证本方法的有效性.In this paper,the robust fault detection problem for linear time invariant(LTI)with both disturbances: unknown finite energy and white noise disturbances is studied.We formulate a mixed H2/H∞ filter residual generator,and solve filter gain by solving a convex minimization problem with a set of linear matrix inequality(LMI)constrains.Moreover,based on this we design robust detection threshold to realize robustness to disturbances and sensitivity to the faults to be detected.At last,the simulation results sho...

关 键 词：鲁棒故障检测 H2/H∞滤波器 线性矩阵不等式 残差信号 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]