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1、//'V,'._/NASA--c:__AVSCOMTechnicalMemorandum105805TOchnicalf-'-Report92-C-024ASimplifiedDynamicModeloftheT700TurboshaftEngineOf9G",.4t',JU,-.40"C,-.-,IZ:D0AhmetDuyarandZhenGu.D_OFloridaAtlanticUniversity,.9BocaRaton,Floridaand:3,.af',jJonathanS.Littt3...Propulsio
2、nDirectorate_C',:ZU.S.ArmyAviationSystemsCommandLewisResearchCenter,r_ZCleveland,Ohio.kSI..----.-.-b7:p,r_?_._C,LP.'.3..j_"L;bi_Lt.k""U:CPreparedforthe48thAmericanHelicopterSocietyAnnualForum1e,.T_r.sponsoredbytheAmericanHelicopterSocietyWashington,D.C.,June3-5,1
3、992N/ASYSTEMSCOMMANDASIMPLIFIEDDYNAMICMODELOFTHET700TURBOSHAFTENGINE'AhmetDuyarandZhenGuMechanicalEngineeringDepartmentFloridaAtlanticUniversityBocaRaton,Florida33431JonathanS.LittPropulsionDirectorateU.S.ArmyAviationSystemsCommandLewisResearchCenterCleveland,Ohi
4、o44135Abs_adAsimplifiedopen-loopdynamicmodeloftheT700turboshaftengine,validwithinthenormaloperatingrangeoftheengine,isdeveloped.Thismodelisobtainedbylinkinglinearstatespacemodelsobtainedatdifferentengineoperatingpoints.Eachlinearmodelisdevelopedfromadetailednonli
5、nearenginesimulationusingamultivariablesystemidentificationandrealizationmethod.Thesimplifiedmodelmaybeusedwithamodel-basedrealtimediagnosticschemeforfaultdetectionanddiagnostics,aswellasforopenloopenginedynamicsstudiesandclosedloopcontrolanalysisutilizingauserge
6、neratedcontrollaw.NomenclatureVariablesA,B,C,D,E,F,G,K,ZstatespacematricesN,gasgeneratorspeedNmmainrotorspeedNppowerturbinespeedPs3staticpressureatstation3QRrequiredtorqueQsengineshafttorqueT4_interturbinegastemperatureuenginemodelinputvectorW_fuelflowxenginemode
7、lstatevectorXCPCcollectivepitchyenginemodeloutputvectorGreeksymbols8[variable]normalizeddeviationofvariablefromnominalBobservabilityindexSubscriptmmodel'ThisworkwassupportedbytheU.S.ArmyundergrantnumberNAG3-1198.In_oducfionFullnonlinear,component-basedturbineengi
8、nesimulationshave,generally,beenlarge,slow,unwieldycomputerprogramswhichrequirelargeamountsofcomputingpowerandtimetoproducesmallamountsofdata.Duetotheirsizeand
