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1、大連理工大學碩士學位論文液氣緩沖器的動態(tài)特性分析及優(yōu)化姓名：林瑋申請學位級別：碩士專業(yè)：機械制造及其自動化指導(dǎo)教師：苗明20061201液氣緩沖器的動態(tài)特性分析與優(yōu)化TheDynamicAnalysisandOptimizationofGas-HydraulicBufferAbstractAsakindof蛆fetyequipments．bufferhasbeenusedwidelyinsuchprojectfieldsasthetra趕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鋤achievesoIIIesimulationcurveafterchangedintosimulationmodelbyMATLABandsolvedincomp
5、uter．Accordingtosimulationresult,whichisconfirmedbytest’sdata,theinfluenceofsomeparameterstothecushioningt_=rformancehasbeendiseussod,andthen,aconclusionthatthedampingvalveparametersarethemostimportantfactorsforcushioningisgoLForabettercushioningperformanceofthebuffer,c
6、hoosingthediameterofdampingvalve，thelengthofdamperandtheMvancedforceandfigidityofsplings鴰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獨創(chuàng)性說明作者鄭重聲明：本碩士學
