摘要
本文提出了状态完全可观冗余度的概念.以线性时不变系统为研究对象,采用数值秩计算理论,编制了计算机辅助计算状态完全可观冗余度的程序.在依靠数学模型实现的容错控制系统中,只要选取可保证状态完全可观冗余度为1的量测信号,就能在任一测量传感器失效的情况下,重组状态反馈控制律,以实现容错控制。
In this paper, a concept of the degree of observable redundancy is proposed. The degree of the observable redundancy for the linear time-invariant systems is determined by compuling the rank of the matrices. It is shown that for the model based fault-tolerant control systems, if the measured signals possess the degree of observable redunancy of 1, the state feed-back control law can be reconstructed in the case of any single sensor fails and fault-tolerant control can be reserved.
出处
《自动化学报》
EI
CSCD
北大核心
1991年第1期105-107,共3页
Acta Automatica Sinica
基金
国家自然科学基金
关键词
容错
控制系统
可观性
冗余度
Observability
sensor failure
numerical rank
