文章基本信息

标题：Fault detection using adaptive thresholds for nonlinear systems: A Preserving order observer approach
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作者：Jesús D. Avilés ; Jesús D. Avilés ; Jorge Dávila 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2016
卷号：49
期号：18
页码：885-890
DOI：10.1016/j.ifacol.2016.10.278
语种：English
出版社：Elsevier
摘要：Abstract: This paper presents an adaptive thresholds based fault detection (FD) approach using preserving order observers for a family of nominal and disturbed nonlinear systems. Based on cooperativity and dissipativity systemic properties, and providing an adequate initialization, a pair of observers that preserve the partial order with respect to the real state values are provided. The interval estimation is exploited for the design of upper and lower adaptive thresholds for Fault Detection. The proposed methodology is developed for the nominal case, where the nonlinear model is completely known, and is extended for the uncertain case, where the adaptive threshold is designed in the presence of perturbations and uncertainties. A computational methodology expressed in terms of linear matrix inequalities (LMI) is provided for the tuning of the observers parameters. The workability of the proposed methodology is illustrated by numerical simulations in an electromechanical system.
关键词：KeywordsAdaptive thresholdsPreserving order observersInterval Observers