2D阀控电液激振器

JOURNALOFMECHANICALENGINEERING4511200911Vol.45No.11Nov.2009DOI10.3901/JME.2009.11.1252D*(310014)2D2D2D2D2D2D2D2DTH137ElectrohydraulicVibrationExciterControlledby2DValveRUANJianLIShengPEIXiangYUZheqingZHUFaming(KeyLaboratoryofSpecialPurposeEquipmentandAdvancedProcessingTechnologyofMinistryofEducation,ZhejiangUniversityofTechnology,Hangzhou310014)AbstractTheworkingfrequencyoftheelectrohydraulicvibrationexcitersconventionallyconstructedbyaservovalveandahydrauliccylinderoramotoristoalargeextentlimitedtofairlynarrowrangebythefrequencyresponsecapabilityoftheservovalve.Aschemeofelectrohydraulicvibrationexciterusinga2Dvalve(two-dimensionalcontrolvalve)tocontrolahydraulicactuatoristhereforeproposedtoenhancetheworkingfrequencybyalargemargin.Inthe2Dvalve,therotaryandslidingmotionsareindependentlyexploitedtocontrolthefrequencyandthemagnitudeoftheagitatedvibrationrespectively.Thefrequencyofthe2Dvalvecontrolledvibrationexciterisdeterminedbytherotaryspeed,numberofgroovesdistributedonaspoollandandcoupledpatternofthegroovenumberonthespoollandandthewindowsnumberonthespoolsleeve.Byadjustingthesefactorsinthe2Dvalvedesign,theproposedschemeofvibrationexciterisapttorealizehigh-frequencyvibration.Takingtheelectrohydraulicvibrationexciterformedbythe2Dvalveandasymmetricalcylinderasanexample,theoreticalandexperimentalinvestigationsarecarriedouttothecasethattheelasticforceconstitutesthemainpartoftheload.Itisclarifiedthatthechangeofthedirectionofelasticforcehasasignificanteffectontheexcitedwaveform.Althoughtherateofthrottlingareasofthe2Dvalvevariedinatriangularwaveformapproximatelyasthespoolrotates,theascentanddescentslopesofoutputforceordisplacementwavedemonstratessomewhatinconsistencybecauseofthechangingdirectionoftheelasticforce.Theinconsistencybecomesthemostmanifestwhenthelinearopeningofthe2Dvalvereachesacriticalpointandweakenswhenitisreduced.KeywordsElectrohydraulicvibrationexciterTwo-dimensionalvalveDynamicanalysisHydraulicactuationmechanism0**(565)(D66)363[1-2]072041080720081102009024511126[3]()1()()1[4][5-6][7-8]2D2D12D1.1D2[9-10](2D)2D()(/2)180()2aPABT/22bPBAT2D()()D22222009112D12722D2DfnooZ3a2DZ()3b2DZ()3b810322D31.22D4a2D(4b)2D[10]42D1s11v12()dppqCA=(1)212v22dpqCA=(2)323v32dpqCA=(3)4s24v42()dppqCA=(4)Av1Av2Av3Av4p1p2Cdxvyv()()1/4(t=)0(3)y(=)ypspaAv1Avv0t2v4511128023Av2(Av3)yv0(t=)34yv05vvv142sin4(41)22sin(21)(41)(42)20(42)(43)0(43)4(1)0,1,2,jxRjjxRjjjAjjjjj++++=++++=(5)vv2v04(41)0(41)(42)2sin(21)(42)(43)22sin2(1)(43)4(1)20,1,2,jjjjxRjjjAxRjjjj++++++=+++=(6)R52D6Av1(Av3)Av2(Av4)6()Z8p1112PeddddyVpqqAtKt=+(7)p2243PeddddyVpqqAtKt=+(8)KeV1V2ypAp6()2ppp12cpL2ddddyyAppmBkyFtt=+++(9)mBckFL(1)(9)2D1.3Matlabypxv0F=kxvc(Avc)xvxvc7a7bpsypkypxvxvcxvxvcypkypxv7c7d2D2009112D129Dypkyp(7d)(7c)2D(6)7cA()7dAAB(7d)AB7cB7dB()BC(7d)BCABCD(7d)CDABDEBCypkyp2Dxvxvcxv()ps727d451113022D892Df2Zif=(10)ii=4892D[11]2D10KEYENCE(LKG1500.6m)1111102D111200Hz2D10Hz40Hz100Hz200Hz1212a12b2D()121200Hz12d200Hz1200zH2009112D13132D(1)2D(2)2Dxvxvcxvxvc2Dxv2Dxv(3)2Dxvcxvxvc2Dxvc2D[1]LANGGeorgeFox.Electrodynamicshakerfundamen-tals[J].SoundandVibration,1997,31(4)14-20.[2]DAVIDVaes,KRISSmolders,JANSwevers,etal.Multi-variablecontrolforreferencetrackingonhalfcartestrig[C]//Proceedingsofthe44thIEEEConferenceonLdecisionandControl,Seville,Spain.20056498-6503.[3]STROUDRC,HAMMAGA,UNDEWOODMA,etal.Areviewofmultiaxis/multiexcitervibrationtechnology[J].SoundandVibration,1996,30(4)20-27.[4].[M].1998.LIHongren.Electrohydrauliccontrolsystem[M].BeijingPressofNationalDefenceIndustry,1998.[5]SUDH,CUIX,WUXH.Analysisandsimulationofdynamicpropertiesofhighfrequencyhydraulicvibration[C]//7thInternationalConferenceonProgressofMachiningTechnology,Nanjing,China.2004918-922.[6]12.4511132[J].199931(3)21-23,28.HANJunwei,YULi,ZHAOHui,etal.Researchoftri-statecontrolforearthquakevibrationsimulator[J].JournalofHarbinInstituteofTechnology,1999,31(3)21-23,28.[7]NASCUTIUL.Voicecoilactuatorforhydraulicservovalveswithhightransientperformances[C]//ProceedingsofIEEEInternationalConferenceonAutomation,QualityandTesting,Robotics,Cluj-Napoca.RomaniaIEEE,2006185-190.[8]MORGANJM,MILLIGANWW.A1kHzservohy-draulicfatiguetestingsystem[C]//ProceedingsoftheConferenceonHighCycleFatigueofStructuralMaterials,WarrendalePA,USA,TheMinerals,Metals&MaterialsSociety,1997305-312.[9]RUANJian,BURTONR,UKRAINETZP.Aninvestiga-tionintothecharacteristicofatwodimensional2Dflowcontrolvalve[J].ASME,JournalofDynamicSystemsMeasurementandControl,2002214-220.[10]RUANJian,BURTONR,UKRAINETZP.Two-dimen-sionalpressurecontrolvalve[J].ProcInstn.Mech.Engrs.,PartC,2001,2151031-1039.[11]MERRITTHE.Hydrauliccontrolsystems[M].NewYorkJohnWiley&Sons,1967.[12].()[M].2000.RUANJian.Electrohydraulic(pneumatic)directdigitaldontrol[M].HangzhouZhejiangUniversityPress,[e-mail](124)[17]FACUNDODP,SERGIOI,EUGENIOO,etal.TheALE/lagrangianparticlefiniteelementmethod:Anewapproachtocomputationoffree-surfaceflowsandfluid-objectinteractions[J].Computers&Fluids,2007,3627-38.[18].[J].()200640(6)971-976.HUXiaoyi,LIHuafeng,TAOWeiming,etal