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.
A function-objective model is proposed as a description of a controlled system. Based on this model, recon-figurable control problems of linear systems are analyzed, including whether the whole system can achieve reconfigurablecontrol, which components should be selected, what control scheme should be adopted, whether the system can reach thedesired control objectives, etc. Firstly, some concepts are defined such as function, objective, minimal reconfigurable unitcondition, feasible set, etc. Then, based on these definitions, the function-objective model is established with the logicalrelation between functions and objectives and feasible sets of all objectives as its two main aspects. The reconfigurablecontrol scheme can be determined by selecting a suitable feasible configuration in the top feasible sets, which are thefeasible sets of top objectives. After the establishment of all the feasible sets offline, we can analyze the system reconfig-urability offiine or online. The method proposed can also be used to guide the design stage of controlled systems. Finally,a satellite model is given to illustrate the method.