对切换系统的研究进行了阐述。从系统建模、稳定性分析、镇定、能控和能观性4个方面介绍了切换系统的研究现状，并重点介绍了公共Lyapunov函数、多Lyapunov函数等稳定性分析方法。最后，对目前的研究进行了展望。%This paper studies switched systems.From modeling,stability analysis,stabiliza-tion and controllability,and observability of switched systems,the current status of switched sys-tem research is discussed.The stability analysis methods include common Lyapunov functions and multiple Lyapunov functions.Prospects for the research are given.
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