含控制时滞系统的实时故障诊断和最优容错控制  

Real-time fault diagnosis and optimal fault-tolerant control for systems with control time-delay

作　　者：李娟[1] 叶若红[2] 唐功友[1] 

机构地区：[1]中国海洋大学信息科学与工程学院,山东青岛266100 [2]青岛农业大学机电工程学院,山东青岛266109

出　　处：《控制与决策》2008年第4期439-444,共6页Control and Decision

基　　金：国家自然科学基金项目(60574023);山东省自然科学基金项目(Z2005G01);青岛市自然科学基金项目(05-1-JC-94)

摘　　要：研究含有控制时滞的线性系统的故障诊断方法和最优容错控制问题.给出了最优容错控制律的存在唯一性条件,提出了最优容错控制律的设计算法.通过构造增广的降维状态观测器,设计了在线诊断故障的故障诊断器并同时实现了系统状态的观测,解决了最优容错控制的物理不可实现问题.利用观测器的输出得到物理可实现的动态最优容错控制律.仿真实例验证了故障诊断方法和动态最优容错控制律的有效性.The method of fault diagnosis and the optimal fault-tolerant control problem are studied for linear systems with control time-delay. The existence and uniqueness condition of optimal fault-tolerant control law is given, and the algorithm for solving the optimal fault-tolerant control problem is presented. The on-line fault diagnosis and the observation of system states are realized by constructing the augmented reduced-order state ohserver, and the physically unrealizable problem is solved. In addition, the physically realizable dynamic optimal fault-tolerant control law is obtained by ulitizing the outputs of state observer. Simulation example shows the effectiveness of the fauh diagnosis scheme and the dynamic optimal fault-tolerant control law.

关 键 词：控制时滞系统 增广状态观测器 实时故障诊断 动态最优容错控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]