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2-DOF并联行程放大机构结构参数优化.docx

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2-DOF并联行程放大机构结构参数优化 Title:OptimizationofStructuralParametersfora2-DOFParallelTravelAmplificationMechanism Abstract: Theincreasingdemandforprecisionmotioncontrolinvariousindustrieshasledtothedevelopmentofparallelmechanismsthatofferincreasedpayloadcapacity,improvedaccuracy,andhigherstiffnesscomparedtotheirserialcounterparts.Inthispaper,wefocusontheoptimizationofstructuralparametersfora2-DOFparalleltravelamplificationmechanism.Theobjectiveistoenhancetheperformanceofthemechanismbymaximizingitstravelamplificationwhilemaintainingtheoverallstructuralintegrity. 1.Introduction: Parallelmechanismshavegainedsignificantattentionfortheirabilitytoprovidehighprecisionandhigh-speedmotioncontrolinvariousapplications,includingrobotics,machinetools,andaerospacesystems.A2-DOFparalleltravelamplificationmechanismofferstheadvantageofamplifyingthetravelrangeoftheendeffectorwhilemaintainingacompactandlightweightdesign.Thispaperaimstooptimizethestructuralparametersofsuchamechanismtoachieveimprovedperformance. 2.LiteratureReview: Theoptimizationofparallelmechanismshasbeenatopicofresearchformanyyears.Severalstudieshavefocusedonenhancingthestructuralintegrity,achievinghigherprecision,orimprovingtheamplificationratio.Variousoptimizationtechniques,suchasgeneticalgorithms,particleswarmoptimization,andfiniteelementanalysis,havebeenusedtooptimizethestructuralparameters. 3.Designofthe2-DOFParallelTravelAmplificationMechanism: Inthissection,weprovideadetaileddescriptionofthedesignofthe2-DOFparalleltravelamplificationmechanism.Themechanismconsistsoftwoparallellegsconnectedinaclosed-loopconfiguration,whereeachlegcontainsmultiplestagesofamplificationmechanisms.Thedesignconsiderationsincludetheselectionoflegkinematics,amplificationmechanismtype,andstructuralcomponents. 4.PerformanceEvaluationMetrics: Toevaluatetheperformanceofthemechanism,wedefineseveralmetricssuchastravelamplificationratio,workspace,stiffness,andoverallweight.Thesemetricsareusedasobjectivefunctionstoguidetheoptimizationprocess. 5.Optimiz