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1、ArchComputMethodsEng(2012)19:51124DOI10.1007/s11831-012-9069-xSystemIdentificationMethodsfor(Operational)ModalAnalysis:ReviewandComparisonEdwinReyndersReceived:10January2012/Accepted:11January2012/Publishedonline:9February2012©CIMNE,Barcelona,Spain2012AbstractOperatio
2、nalmodalanalysisdealswiththeesti-healthmonitoringpurposes.Dampingandboundarycondi-mationofmodalparametersfromvibrationdataobtainedtionsdependonthevibrationamplitudeand,ifthestructureinoperationalratherthanlaboratoryconditions.Thispapermovesasawholeorcontainsrotatingp
3、arts,themodalpa-extensivelyreviewsoperationalmodalanalysisapproachesrametersdependonthe(rotation)speed(oftheparts).There-andrelatedsystemidentificationmethods.First,themath-fore,itisimportantthattheexperimentaldeterminationofematicalmodelsemployedinidentificationarerel
4、atedtothemodalparametersofthestructureisperformedinnor-theequationsofmotion,andtheirmodalstructureisre-maloperationalconditions,i.e.,aroundtheoperatingpoint.vealed.Then,strategiesthatarecommontothevastmajor-ThisbelongstothedomainofOperationalModalAnalysisityofidentifi
5、cationalgorithmsarediscussedbeforedetailing(OMA),weremodalparametersareextractedfromthedy-somepowerfulalgorithms.Theextractionandvalidationofnamicresponseto(partly)unmeasuredoperationalforces.modalparameterestimatesandtheiruncertaintiesfromtheOneofthefirstsuccessfulap
6、plicationsofOMAinme-identifiedsystemmodelsisdiscussedaswell.Finally,differ-chanicswasfordeterminingthemodalparametersofwindentmodalanalysisapproachesandalgorithmsarecomparedturbinesatdifferentrotationrates[1].Laterapplicationsin-inanextensiveMonteCarlosimulationstudy.
7、cludeon-the-roadmodalanalysisofcarsandin-flightmodalanalysisofairplanes[2],modaltestingofspacecraftduringlaunch[3],andmodaltestingofenginesduringstartupand1Introductionshutdown[4],amongstothers.Incivilengineering,OMAhasbecometheprimarymodaltestingmethod,andthenum-Thes
8、usceptibilityofstructurestovibrationsisaprimede-berofreportedcasestudiesisabundant.Thisisparticu-signissueinmechanics,especiallyint
