非线性短时延网络控制系统的容错控制器设计

摘要

Focusing on a class of nonlinear networked control system with short time-delay,a control method based on observer for integrity against sensor failures is proposed. An equivalent T-S fuzzy model is applied to the fuzzy modeling of the nonlinear system,then the cooperative design approach of the fuzzy controller and fuzzy observer is given and the sufficient conditions for the closed-loop fuzzy system to possess integrity against sensor failures are derived in terms of Lya-punov function combined with linear matrix inequalities (LMIs). Numerical simulation examples demonstrate the method is feasible and effective.%针对一类存在短时延的非线性网络控制系统,提出了一种基于观测器的传感器失效完整性控制方法.首先利用模糊T-S模型对系统进行模糊建模,在此基础上,提出模糊控制器与模糊观测器的协同设计方法,然后应用李亚普诺夫函数法和线性矩阵不等式(LMI)法,给出了闭环模糊系统在传感器故障时具有完整性的充分条件.数值仿真算例表明,该方法是可行和有效的.