执行器失效的线性连续大系统鲁棒容错控制

Fault-tolerant robust control for actuator failure in the linear continuous large-scale system

针对越来越多的大系统应用于生产和技术领域,系统的可靠性已成为衡量系统性能和品质的首要指标之一.随之而来的就是系统的故障及失效造成的后果会很严重.因为大系统往往涉及到更多的部件,发生部件失效的可能性也会更大.本文利用线性矩阵不等式(LMI)方法,研究了线性连续大系统的鲁棒容错控制器的设计方法,以及使系统对执行器失效具有完整性的鲁棒容错控制器设计问题,并用设计示例说明了该方法的有效性.

Scale of control system expands as a result of an increasement of components it contains in rapid industrial technology improvement process. However, it is inevitable that some components work out of order due to long time running. These faults can degrade the performance of system drastically or even make the system out of control, which can result in serious consequence. Fault - tolerance control is a methodology which tolerant the fault system makes during operation, which means that this technique can guarantee the system to work stably and safely in case of some disturbances result from its sub - systems breakdown. By using the linear matrix inequality （LMI）, the paper considers some resolutions to problems in continuous large -scale systems, the fault -tolerant controller is designed and a simulation is illustrated to validate the feasibility of this design.