新型先导式无静差水压溢流阀的动静态仿真分析

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1、机床与液压Jun．2012HydromechatronicsEngineeringVe1．40No．12DOI：10．3969／j．issn．1001-3881．2012．12．003TheStaticandDynamicSimulationAnalysisofaNewTypePilotZeroSteady-stateErrorofWaterHydraulicOverflowValveZHANGYibo，YUANGRuibo，ZHANGLi，ZHUGengyinFacultyofMechanicalandElectricalEngineering，Kunming

2、UniversityofScienceandTechnology，Kunming650093，ChinaAbstract：Anewtypepilotofzerosteady-stateerrorhydraulicoverflowvalveisdesignedinthispaper，andthestructurecharacteristicsofthevalveisintroduced．Inthepartialhypothesisprem．ise，aprecisemathematicalmodelofoverflowvalveisestablished．Byusi

3、ngtheactualparame—tersanduniversaInumericaI．thesteady·stateerrorofthezerosteady-stateerrorofwaterhy．draulicoverflowvalveisexplored．WiththeaidofMatlab／Simulinkonthenewvalvestructurefordynamicandstaticsimulationanalysis，thestaticanddynamiccharacteristicsandstabilityofthevalvearestudied

4、atthepressureof31MPaworkingconditions．Thesimulationresultsindicatelhat，thevalvehasbeRerdynamicandstaticcharacteristics，itsresponsetimereachesto12sm．AFWreachesto86Hzandphasebandwidthreachesto87．6Hz．Keywords：pilotoperatedpressurereliefvalve，zerosteady-stateerror，Matlab／Simulink，Statica

5、nddynamicanalysis．temsandtostabilizethesystempressureintheset—1．Introductionringvalueisitsmainrole．Especiallyintheaviation，aerospaceandotherprecisionhydrauliccontrolcir-Purewaterhydraulictransmissiontechnologyiscuit，itrequestsoverflowvalvethathashigherpreci—anewtechnologywhichapplies

6、naturalwater(inclu-sionvoltageregulator．Traditionalwaterhydraulico—dingfreshwaterandseawater)insteadofmineraloilverflowvalvehasthefollowingdisadvantages：①Inastheworkingmediumofhydraulicsystem，anditisthetraditionalpressurevalve，duetotheopenloopenvironmentallyfriendly，cleansanitation，e

7、asytocontrolofinletpressurebetweenpilotvalveandthepurchaseanduse，andlowcost．Itcanavoidorre-mainvalve，theoutputpressurewillincreasewiththeducethepollution，havegoodsafety，goodeconomicincreaseofflowwhenthepressuredeviatesitsregula—performanceandmanyotheradvantages．Itisthedi-tionvalue．②S

8、incewaterist