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Fault tolerant control design via hybrid petri nets
Author(s) -
Yang Hao,
Jiang Bin,
Cocquempot Vincent,
Shi Peng
Publication year - 2010
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.223
Subject(s) - unobservable , petri net , computer science , control theory (sociology) , fault tolerance , mutual exclusion , controller (irrigation) , observer (physics) , scheme (mathematics) , fault (geology) , discrete time and continuous time , control engineering , control (management) , engineering , algorithm , distributed computing , artificial intelligence , mathematics , mathematical analysis , statistics , physics , quantum mechanics , seismology , agronomy , econometrics , biology , geology
This paper proposes a novel fault tolerant control (FTC) scheme for hybrid systems modeled by hybrid Petri nets (HPNs). The HPNs model consists of discrete and continuous PNs. The faults are represented by unobservable discrete transitions or the normal observable discrete transitions with abnormal firing time in discrete PNs. First,an observer‐based fault diagnosis method is proposed to estimate the marking in discrete places with unknown initial marking and diagnose the faulty behavior simultaneously. Then,an adaptive fault tolerant controller is designed to maintain the general mutual exclusion constraints (GMEC) of discrete PNs, and a scheme that adjusts firing speeds of continuous transitions is provided to maintain the optimality of continuous PNs. Finally, an example of an intelligent transportation system consisting of automated vehicles on a bridge is included to demonstrate the effectiveness of our developed techniques. Copyright © 2010 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society