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1、機床與液壓Jun．2012HydromechatronicsEngineeringVe1．40No．12DOI：10．3969／j．issn．1001-3881．2012．12．003TheStaticandDynamicSimulationAnalysisofaNewTypePilotZeroSteady-stateErrorofWaterHydraulicOverflowValveZHANGYibo，YUANGRuibo，ZHANGLi，ZHUGengyinFacultyofMechanicalandElectricalEn
2、gineering，KunmingUniversityofScienceandTechnology，Kunming650093，ChinaAbstract：Anewtypepilotofzerosteady-stateerrorhydraulicoverflowvalveisdesignedinthispaper，andthestructurecharacteristicsofthevalveisintroduced．Inthepartialhypothesisprem．ise，aprecisemathematicalmodel
3、ofoverflowvalveisestablished．Byusingtheactualparame—tersanduniversaInumericaI．thesteady·stateerrorofthezerosteady-stateerrorofwaterhy．draulicoverflowvalveisexplored．WiththeaidofMatlab／Simulinkonthenewvalvestructurefordynamicandstaticsimulationanalysis，thestaticanddyn
4、amiccharacteristicsandstabilityofthevalvearestudiedatthepressureof31MPaworkingconditions．Thesimulationresultsindicatelhat，thevalvehasbeRerdynamicandstaticcharacteristics，itsresponsetimereachesto12sm．AFWreachesto86Hzandphasebandwidthreachesto87．6Hz．Keywords：pilotopera
5、tedpressurereliefvalve，zerosteady-stateerror，Matlab／Simulink，Staticanddynamicanalysis．temsandtostabilizethesystempressureintheset—1．Introductionringvalueisitsmainrole．Especiallyintheaviation，aerospaceandotherprecisionhydrauliccontrolcir-Purewaterhydraulictransmission
6、technologyiscuit，itrequestsoverflowvalvethathashigherpreci—anewtechnologywhichappliesnaturalwater(inclu-sionvoltageregulator．Traditionalwaterhydraulico—dingfreshwaterandseawater)insteadofmineraloilverflowvalvehasthefollowingdisadvantages：①Inastheworkingmediumofhydrau
7、licsystem，anditisthetraditionalpressurevalve，duetotheopenloopenvironmentallyfriendly，cleansanitation，easytocontrolofinletpressurebetweenpilotvalveandthepurchaseanduse，andlowcost．Itcanavoidorre-mainvalve，theoutputpressurewillincreasewiththeducethepollution，havegoodsaf
8、ety，goodeconomicincreaseofflowwhenthepressuredeviatesitsregula—performanceandmanyotheradvantages．Itisthedi-tionvalue．②Sincewaterist
