一类线性系统的容错控制分配策略设计

主要研究了一类带有执行器故障的线性系统的控制分配策略设计问题。提出了一种改进的基于正交矩阵法的控制分配策略，并利用滑模控制理论设计了相应的变结构容错控制率。所设计的基于控制分配策略的容错控制器能使得在执行器发生故障或部分中断的情况下，系统还能保持稳定且控制输出信号能够较好地跟踪参考输入信号。所提出的稳定性充分条件比现有文献中的条件放宽了从而降低了保守性，提高了控制器的容错控制性能。仿真结果表明，所提出的控制分配策略是可行有效的。

Fault tolerant control allocation scheme for linear systems against actuator failures

This paper mainly focuses on the problem of control allocation for a class of linear systems against actuator failures,in which a novel partition technique via orthogonal matrix approach is proposed to design the control allocation scheme. Based on the proposed partition technique,some restricts on the system are re-laxed and then less conservative stability conditions for the system can be obtained. Further,integral sliding mode ideas are incorporated with control allocation to cope with the total failure of certain actuators,under the assumption that redundancy is available in the system. The effectiveness of the proposed control allocation scheme against failures is tested in simulation based on a large transport aircraft model.