故障大系统的鲁棒容错控制方法

本文提出了对执行机构故障具有完整性的大系统分散鲁棒控制器设计方法。根据执行机构故障对系统的影响,建立了系统的故障模型。研究了故障大系统对执行机构故障的容错能力,导出了与故障大系统容错能力相关的不等式,表明增加大系统的鲁棒性指数,可以改善故障大系统的鲁棒性和容错能力。从而,按照系统的要求,选择适当的鲁棒性指数,利用高斯方法,可方便地设计出动态大系统的分散鲁棒容错控制器。

A Robust Fault Tolerant Control Method for Large-Scale Systems with Failure

This paper presents a method of designing the decentralized robust controller for large-scale systems,which possess integrity with actuator failures. According to the influence of failures to the system,the failure model is built for the system,with the research on fault tolerant capability for the large-scale system with actuator failures. An inequality related to the fault tolerant capability is derived,which indicates that the robustness and the fault tolerant capability can be improved with the enlargement of robustness index for the large-scale system. As a result, a discretized robustness failure tolerant controller of dynamic large-scale system'can be designed conveniently with the Ganss mehtod,according to the requirments of the system and by the proper choice of robustness index. An illustrative example is given at the end.