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1、1156IEEETRANSACTIONSONSYSTEMS,MAN,ANDCYBERNETICSPARTA:SYSTEMSANDHUMANS,VOL.38,NO.5,SEPTEMBER2008Model-BasedPrognosticTechniquesAppliedtoaSuspensionSystemJianhuiLuo,Member,IEEE,KrishnaR.Pattipati,Fellow,IEEE,LiuQiao,andShunsukeChigusaAbstractConventionalmaintenancestrategies,suchascor-ginep
2、eriodically).Thistime-scheduledmaintenanceisjustifiedrectiveandpreventivemaintenance,arenotadequatetofulfillwhenthemaintenanceisdoneonwell-knownfieldcomponents.theneedsofexpensiveandhighavailabilitytransportationandAlthoughpreventivemaintenanceprogramsincreasesystemindustrialsystems.Anewstrat
3、egybasedonforecastingsystemavailability,theyareexpensivebecauseoffrequentreplacementdegradationthroughaprognosticprocessisrequired.Therecentadvancesinmodel-baseddesigntechnologyhaverealizedsignifi-ofcostlypartsbeforetheendoftheirlife.Anotherdisadvantagecanttimesavingsinproductdevelopmentcyc
4、le.Theseadvancesofpreventivemaintenanceisthatitistimebased.Studieshavefacilitatetheintegrationofmodel-baseddiagnosisandprognosisrevealedthatmostoftheequipmentfailuresarenotrelatedtoofsystems,leadingtocondition-basedmaintenanceandincreasedthenumberofhourstheywereoperating[1].Hence,inmanyava
5、ilabilityofsystems.Withanaccuratesimulationmodelofacases,time-basedsolutionsarenotcosteffective.Consequently,system,diagnosticsandprognosticscanbesynthesizedconcur-rentlywithsystemdesign.Inthispaper,wedevelopanintegratedtheseconventionalmaintenancestrategiesarenotadequateprognosticprocessb
6、asedondatacollectedfrommodel-basedtofulfilltheneedsofexpensiveandhighavailabilitytrans-simulationsundernominalanddegradedconditions.Prognosticportationandindustrialsystems.Condition-basedmaintenancemodelsareconstructedbasedondifferentrandomloadconditions(CBM)isanalternativethatusesembeddedd
7、iagnosticsand(modes).AnInteractingMultipleModel(IMM)isusedtotracktheprognosticstodeterminesystemshealth.Failureprognosishiddendamage.Remaining-lifepredictionisperformedbymixingmode-basedlifepredictionsviatime-averagedmodeprobabilities.inCBMinvolvesforecastingo
