摘要
本文针对一类多输入模糊双线性系统,在系统的状态不完全可测的情况下,提出一种模糊容错控制方法.首先,我们设计模糊检测观测器检测系统是否发生故障.再基于检测观测器,设计模糊控制器保证未发生故障的系统渐近稳定.然后,在系统发生故障的情况下,设计自适应模糊诊断观测器对故障进行估计,给出故障诊断的算法.最后,根据估计出的故障,进行故障调节,设计容错控制器.基于Lyapunov稳定性理论,证明所设计的容错控制器可以保证系统在发生故障的情况下,仍能保证故障系统的渐进稳定性.仿真证明了所提控制算法的有效性.
In this paper, a fuzzy fault-tolerant control approach is proposed for a class of multiple input fuzzy bilinear systems with unmeasurable states. First of all, a fuzzy detective observer is designed to detect the fault. Based on the developed detective observer, a fuzzy con-troller is proposed to guarantee the closed-loop system without faults is asymptotically stable. Then, a fuzzy adaptive diagnostic observer is developed to estimate the fault. Finally, the fault estimation is applied to fault accommodation and a fault-tolerant controller is designed. Based on Lyapunov stability, it is proved that the fault-tolerant controller ensures the closed-loop system with faults is asymptotically stable. An example is presented to show the effectiveness of the proposed control method.
出处
《工程数学学报》
CSCD
北大核心
2015年第2期174-184,共11页
Chinese Journal of Engineering Mathematics
基金
辽宁省教育厅科学研究项目(L2013244)~~
关键词
模糊双线性系统
模糊容错控制
模糊检测观测器
模糊自适应诊断观测器
故障调节
fuzzy bilinear systems
fuzzy fault-tolerant control
fuzzy detective observer
fuzzy adaptive diagnostic observer
fault accommodation
