文章基本信息

标题：Asymptotic and tracking guarantees in interval observer design for systems with unmeasured polytopic nonlinearities ⁎
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作者：Hiroshi Ito ; Thach Ngoc Dinh
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2020
卷号：53
期号：2
页码：5010-5015
DOI：10.1016/j.ifacol.2020.12.1099
语种：English
出版社：Elsevier
摘要：AbstractFor a class of nonlinear systems subject to disturbances, an observer is proposed to estimate time-varying intervals in which their state variables are guaranteed to stay all the time. The objective is to effectively deal with nonlinearities depending on unmeasured variables which have been usually treated as uncertainty in observer design. Focusing on nonlinearities in a polytopic form, this paper shows how an interval observer can replace nonlinearities in unmeasured variables by nonlinearities in estimated intervals. Theoretical guarantees and simulation comparisons are presented to demonstrate that the use of interval-dependent nonlinearities gives better estimates than the use of an overbounding observer.
关键词：KeywordsInterval observersPolytopic systemsState estimationNonlinear systems