基于观测器的时滞系统的容错控制

Observer-Based Fault Tolerant Control of Time Delayed Systems

对于鲁棒容错控制所能容忍的多个执行器或传感器故障Ωa{1,2,…,m}和Ωs{1,2,…,q},即对于易于失效的传感器和执行器可选择的子集,基于观测器提出了时滞系统容错控制的新方法,即具有时间延迟的容错观测器的设计方法.容错观测器的设计方法是通过分析加入观测误差的扩展系统来设计K,L和Kd,同时针对正常情况和控制通道失效情况,最后转化为解LMI,使得闭环系统渐近稳定.

With respect to the faults of multiple actuators or sensors, i.e., Ωα∪→{ 1,2,…, m } and Ωs∪→{ 1,2,…, q } which mean the selectable subsets of fault-prone actuators or sensors are both tolerable to robust fault-tolerant control, a new method based on observer is proposed for fault-tolerant control of time-delayed systems, which is also a new design method for time-delayed fault-tolerant observer. The design is done the way the K, L and Kd are determined by analyzing the extended system where the observation errors are added to and, according to the current state is normal or of failed control channel, the design procedure finally becomes the solution to LMI to stabilize asymptotically the closed-loop control system.