A Decentralized Approach Based on Unknown Input Observers for Actuator Fault Detection and Isolation of a Class of Interconnected Nonlinear Systems | Zendy

Amir Abbasi | Zendy; Javad Poshtan | Zendy; Ali Moarefianpour | Zendy

Open Access

A Decentralized Approach Based on Unknown Input Observers for Actuator Fault Detection and Isolation of a Class of Interconnected Nonlinear Systems

Author(s) -

Amir Abbasi,

Javad Poshtan,

Ali Moarefianpour

Publication year - 2016

Publication title -

studies in informatics and control

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 22

eISSN - 1841-429X

pISSN - 1220-1766

DOI - 10.24846/v25i4y201606

Subject(s) - computer science , fault detection and isolation , actuator , nonlinear system , isolation (microbiology) , control theory (sociology) , class (philosophy) , fault (geology) , control engineering , artificial intelligence , control (management) , engineering , physics , quantum mechanics , microbiology and biotechnology , biology , seismology , geology

Thisipaperipresentsiainovelidecentralizedischemeiforiactuatorifaultidetectioniandiisolationiofiaiclassiofilargescalei interconnectedinonlinearisystems. iFor ieachiof i thei interconnectedisubsystems, ia i local inonlineariunknown iinput observeri(UIO)iisidesignediwithoutitheineeditoicommunicateiwithiotheriagents.iTheiinterconnecteditermsiareitreatedias unknowniinputs,ihenceiallisubsystemsiareidecoupledicompletelyianditheiinformationiofiotherisubsystemsiisinotineededifor faultidetectioniandiisolation.iIniadditionitoitheiinterconnections,ianiexogenousidisturbanceiwhichicontainsibothisystem andimeasurementinoiseiisiapproximatelyidecoupled.iToifacilitateitheiobserveridesign,isufficienticonditioniforiexistenceiof theidesignediobserveriisiformulatediinitermsiofiaisetiofilinearimatrixiinequalitiesi(LMIs)iandioptimaligainimatricesiare obtained. iA i simulation i example i of i an i automated i highway i system i demonstrates i the i effectiveness i of i the i proposed methodology.

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