文章基本信息

标题：Parameter fault diagnosis in heat exchange networks with distributed time delay
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作者：Wijaya Kurniawan ; Katalin M. Hangos ; Lőrinc Márton 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2022
卷号：55
期号：18
页码：39-44
DOI：10.1016/j.ifacol.2022.08.027
语种：English
出版社：Elsevier
摘要：AbstractThis paper deals with parameter fault diagnosis in heat exchange networks (HENs) with joining and splitting connections where the change in the heat transfer coefficient is considered as fault. The fault diagnosis oriented model of the HEN elements was developed based on the equivalent LTI realization of distributed delay models. The Signed Directed Graph (SDG) method is used to derive the fault observability conditions. The presence of faults induces bilinear fault-input terms into the system model. Thus, a nonlinear adaptive observer was proposed for fault diagnosis. To verify and validate the proposed method, a case study is presented. The simulation results show that the observers are successfully detecting and estimating the faults and unknown system states.
关键词：KeywordsFault diagnosisHeat Exchange Networks, Distributed delay, Process systems