一类线性不确定系统的主动容错H_∞控制  

Active Fault Tolerant H_∞ Control for Uncertain Linear Systems

作　　者：霍泽云[1] 钟麦英[1] 董全超[1] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061

出　　处：《控制工程》2008年第4期474-477,共4页Control Engineering of China

基　　金：国家自然科学基金资助项目(60774071);教育部博士点基金资助项目(20050422036);山东省博士基金资助项目(2005BS01007)

摘　　要：研究了一类线性不确定系统的主动容错控制问题。采用广义内模结构的主动容错控制系统,针对可能发生的故障模式,建立了反映故障动态行为的参考模型,应用基于观测器的故障估计器在线估计故障,并将故障估计信息用于故障补偿,将主动容错控制归结为两目标H∞优化问题,推导并证明了问题可解的充分条件,得到了H∞控制器与故障估计器集成设计的迭代线性矩阵不等式方法。仿真算例验证了算法的有效性。The problem of active fault tolerant control for a class of uncertain linear systems is studied by applying generalized internal model controller.A reference fault model is proposed to describe the dynamic behavior of the possible fault,and an observerbased fault estimator is considered.Using the online fault estimation for accommodation,the problem of active fault tolerant H∞ control is formulated as a two-objective H∞ optimization,and the sufficient condition is derived in terms of certain matrix inequalities.An iterative linear matrix inequality algorithm is obtained by integrated designing active H∞ controller and fault estimator.The numerical example result shows the effectiveness.

关 键 词：主动容错控制 故障估计 H∞控制 参考模型 广义内模控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]