传感器部分失效的网络控制系统H_∞容错控制

针对存在固定时滞和外部扰动的网络控制系统,建立了其传感器部分失效的控制输入数学模型。为了降低对于网络传输的要求,采用状态增广以克服时滞对网络控制系统分析的影响。通过构造适当的Lyapunov函数,并运用H∞控制理论和线性矩阵不等式方法(LMI),导出了网络控制系统H∞容错控制器存在的条件及具体方法。最后通过一个仿真算例证明了方法的可行性和有效性。

Robust H∞ Fault-Tolerant Control for Networked Control System Against Sensor Partial Failure

To a class of Networked Control System (NCS) with fixed network-induced delays and control input constraintsa control input model under partial sensor failure was established.In order to reduce the communication burden of the networkthe system was augmented to eliminate the effect caused by network-induced delays.By establishing a proper Lyapunov function and applying H∞ control theory and linear matrix inequality (LMI) techniquesthe sufficient condition for NCS with robust H∞ fault-tolerant controller and the design approach of the controller were obtained.Finallya simulation example was used to illustrate the effectiveness and the feasibility of proposed approach.