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一种线性系统可重构控制分析方法

DOI: 10.3724/SP.J.1004.2014.02726, PP. 2726-2736

Keywords: 可重构性,航天器,冗余,功能目标模型

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Abstract:

?提出了一种线性系统在线或者离线的可重构控制分析方法,该方法基于功能目标模型,能够定性分析线性系统的可重构控制问题,包括发生多个故障时是否具有可重构能力,采用哪些组件和何种控制方法,以及重构后系统是否能达到期望的控制目标等.首先定义了功能、目标、最小重构单元状态、可行集等概念,并基于这些概念建立系统功能目标模型.该模型由功能目标关系和各个目标的可行集组成.总目标的可行集为系统顶层可行集,可重构控制方案的选择基于顶层可行集.应用本文方法,离线建立起控制系统的功能目标模型后,可以在线或离线分析其多种故障模式下的可重构问题,还可以用于指导可重构性设计.最后,给出一个卫星控制系统可重构控制分析的例子.

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