网络控制系统H∞指数稳定容错控制器的设计

Design of H∞ Fault-tolerant Controller for Networked Control System

摘要:

随着网络控制系统的广泛应用,容错控制问题也成为了大家研究的重点,尽管网络控制系统的容错控制方法很多,但是还有一些方法被忽略,为了更好地实现容错控制,提出一种设计,针对一类时延网络控制系统(NCS),在执行器出现故障为乘性故障情况下,对系统建立离散形式的数学模型,运用离散系统的有界实引理,设计此系统的H∞指数稳定容错控制器；最终通过LMI工具箱求出状态反馈矩阵,获得设计的容错控制器;数据示例证明了此控制器符合设计要求,并且能够实现容错控制。

Abstract:

With the wide application of the network control system, the fault-tolerant control problem has also become the focus of research . In spite of many fault-tolerant control methods have been proposed, there are still some conditions were ignored . Proposing a design in order to achieve better control of fault-tolerant :for a class of networked control systems with time delay, when the actuator failed because of the multiplicative fault,we discrete the mathematical model of the system,using the bounded real lemma of the discrete system, and designing a H∞fault-tolerant controller of exponentially stable .Then working out the state feedback matrix by using LMI toolbox, get the fault-tolerant controller . The data sample proves the controller can meet the requirements of the design, and can achieve good fault-tolerant control.