文章基本信息

标题：Fault Diagnosis of Uncertain Hybrid Systems ⁎
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作者：Constantinos Heracleous ; Christos G. Panayiotou ; Marios M. Polycarpou 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2018
卷号：51
期号：24
页码：123-130
DOI：10.1016/j.ifacol.2018.09.545
语种：English
出版社：Elsevier
摘要：AbstractThis paper presents an online monitoring and fault diagnosis architecture for hybrid systems with nonlinear uncertain discrete-time dynamics. The architecture features a modular observer based on a modified hybrid automaton framework, that models each subsystem individually and the whole system as a composition of these models. The fault detection scheme can detect both discrete and parametric faults using a mode dependent time-varying threshold that guarantees no false-positives alarms due to modeling uncertainty. The fault isolation scheme can anticipate which fault events may have occurred and dynamically employs only the necessary number of isolation estimators that try to isolate the fault by calculating residual thresholds and approximating the unknown parameter values. Simulation results of a two-tank hybrid system example illustrate the effectiveness of the proposed approach.
关键词：KeywordsHybrid systemsFault detection and isolationOpen hybrid automataAdaptive parameter approximation