液气缓冲器的动态特性分析及优化

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1、大连理工大学硕士学位论文液气缓冲器的动态特性分析及优化姓名：林玮申请学位级别：硕士专业：机械制造及其自动化指导教师：苗明20061201液气缓冲器的动态特性分析与优化TheDynamicAnalysisandOptimizationofGas-HydraulicBufferAbstractAsakindof蛆fetyequipments．bufferhasbeenusedwidelyinsuchprojectfieldsasthetra赶ic，electricity,buildingandmotivepowermachine，etc．

2、Withthedevelopmentofequipments’giantandhifla-speed,hydraulicbufferwhichhasanexcellentperformancehasbecomingmoreandmoreimportanLDuringthetraditionaldesigning，themainparametersareestimatedbasedonexperiencethencorrectedreliedonworkingperformance．Itisnotaneffectivewaytodesi

3、gnandhardtogetthesatisfiedresults．Toresolvethisproblem，somefurtherresearchestoLQY-YQgas-hydranlicbufferhavebeendone．Thegas-hy’draulicbufferhasappliednewstructureandutilizedthecharacteristicofnitrogen,suchaSnofatigueandsmallelasticmodulus．Iti／ladethecapabilityandthepower

4、-absorptionabilitypredominant,thereboundtimeshortandtheeushioningforceincreasedsharply．Inthispaper,amathematicalmodelofcushioningprocessbasedonLQH-YQgas-hydraulicbufferisestablished．which锄achievesoIIIesimulationcurveafterchangedintosimulationmodelbyMATLABandsolvedincomp

5、uter．Accordingtosimulationresult,whichisconfirmedbytest’sdata,theinfluenceofsomeparameterstothecushioningt_=rformancehasbeendiseussod,andthen,aconclusionthatthedampingvalveparametersarethemostimportantfactorsforcushioningisgoLForabettercushioningperformanceofthebuffer,c

6、hoosingthediameterofdampingvalve，thelengthofdamperandtheMvancedforceandfigidityofsplings鸹designvariables．makingtheerrorbet、veenactualvalueandidealizedvalueasanobjectfunction,andthen,u∞GAarithmeticasanoptimizedmethod．Finally，aseriesofproperdatathatCallachievewellcushionp

7、erformance，whichshowssteadyforceandhi曲capacity，havebeengot．Thepaperhavealsodevelopedovtimizationsoftwareforthedampingvalveofgas-hydraulicbuffer,providedgoodinterfacesforshowingtheresults，andintroducedtheoperationmethodofthesottwarethroughtheeonci'cteinstancewhichhasv耐fi

8、edthepracticalvalueof也esot}}、：vare．KeyWords：gas—hydraulicbuffer；dynamiticsimulation；MAT]LAB；GA独创性说明作者郑重声明：本硕士学