一种闭环冗余系统可重构控制方法  

A Reconfigurable Control Method for Over-Actuated Closed-Loop Systems

作　　者：段文杰[1,2] 王大轶[1,2] 刘成瑞[1,2] 

机构地区：[1]北京控制工程研究所,北京100190 [2]空间智能控制技术重点实验室,北京100190

出　　处：《空间控制技术与应用》2014年第6期21-25,47,共6页Aerospace Control and Application

基　　金：国家自然科学基金资助项目(61203093;11202011)

摘　　要：提出一种闭环冗余系统在线可重构控制方法,包括控制器、控制分配和故障诊断.在故障诊断算法中,首先采用有向图方法快速确定可能的故障源.对于难以隔离的故障,提出了一种在线故障定位方法.故障定位后,通过控制分配,重新分配控制律.以航天器冗余动量轮系统的故障重构为例,说明了如何在系统级角度在线定位故障,重构系统.最后,给出了冗余动量轮卫星姿态调节过程中故障重构的仿真算例.An online reconfigurable control scheme is proposed for over-actuated closed-loop systems, in- eluding the controller, control allocation, and fault diagnosis. In the fault diagnosis, the signed directed graph（SDG） method is adopted to locate the possible faulty components as soon as possible. For the faults that cannot be isolated, an on-line fault isolation method is designed. After the faults are isolated, the control allocation is used to redistribute the control efforts. How to isolate faults on-line is explained based on a spacecraft model with over-actuated reaction wheels, and simulations of online fault tolerance are carried out to testify our scheme.

关 键 词：可重构控制 故障隔离 闭环系统 有向图 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]