自动化学报2017，Vol.43Issue(12)：2091-2099,9.DOI:10.16383/j.aas.2017.c160471
离散切换系统观测器存在性讨论及降维观测器设计
Discussions on Existence of Observers and Reduced-order Observer Design for Discrete-time Switched Systems
摘要
Abstract
The paper discusses the unknown input observer (UIO) design issue for discrete-time switched systems with unknown inputs. First, a Lyapunov-type equivalent representation of observer matching condition for a general discrete-time system is given and proved. Then, based on the stability theory of discrete-time switched system without unknown inputs, a reduced-order observer is developed for a discrete-time switched system with unknown inputs. The reduced-order observer can eliminate the influences of the unknown inputs directly because of the special selection of the observer gain matrix determined by matrix block computation. Meanwhile,an algebraic unknown input reconstruction method is proposed. Finally,a simulation example is given to verify the correctness and effectiveness of the proposed methods.关键词
离散系统/未知输入估计/观测器匹配条件/切换系统Key words
Discrete-time system/unknown input estimation/observer matching condition/switched system引用本文复制引用
朱芳来,蔡明,郭胜辉..离散切换系统观测器存在性讨论及降维观测器设计[J].自动化学报,2017,43(12):2091-2099,9.基金项目
国家自然科学基金(61573256),上海市科委"创新行动计划"项目(16111106502),浙江省高端创新载体专项项目浙江省高端创新载体专项项目资助Supported by National Natural Science Foundation of China(61573256),Shanghai Science and Technology Innovation Fund(16111106502),Zhejiang Province High-end Innovative Carrier Project （61573256）
