欢迎来到天天文库
浏览记录
ID:31957833
大小:11.18 MB
页数:69页
时间:2019-01-29
《4tps-ps并联机构的刚度性能-分析与优化》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、AbstractParallelmechanismwithasimplestructure,highloadcapacity,easytocontrol,etc.,isanewtrendinresearchathomeandabroad.Inrecentyears,thestudyofasmallproportionofDOFparallelmechanismbecomesmoreandmore.becauseitisappliedwidelyinindustryandotherfieldsandhasapromisingprosp
2、ects.Therigidityandoptimizationalsooccupyanimportantpositioninparallelmechanism.Oncemainlythestiffnessofparallelmechanismsfailstogettherequiredstandard,itcannotguaranteetheaccuracy,evencanmakeabigdistortionandparalyze.Inthispaper,4TPS-PSparallelmechanismwillbestudied,c
3、onductedstiffnessperformanceanalysisandoptimizationstudies.Includethefollowingaspects:(1)Around4TPS—PSparallelmechanismtobuildinstitutionalmodel,thekinematicmodel,thelocationinverseconductedusingthederivationmethodtobuildJacobimatrixanalysisofthebodiesoftherod,andakine
4、maticindicatorsworkspacetobesolved.(2)TheJacobimatrixwillbeobtainedthroughkinematicsofthemechanismtobuildstiffnessmodel,inthemeantime,stiffnessmatrixwillbegiventostudytheimpactofstructuralparametersandposeparametersonstiffness,findoutthelaw.Alsodexterityofparallelmecha
5、nismwillbestudied,indicatinggooddexterityandmakingagoodfoundationforthemulti—objectiveoptimization.(3)In—scaleoptimization,thestiffnessanddexteritywillbetheobjectofoptimization,basedongeneticprogrammingalgorithm,threeparameterswillbeoptimizedasvariables,andinstitutions
6、beforeandaReroptimizationwillbecompared.thecorrectnessofoptimizationwillbeproved.(4)Usingthefiniteelementsoftwareforrapidmodeling,comparingfiniteelementmodelbeforeandafteroptimizationthroughstaticanalysis,theninthesamesizeinstitution;comparingtheinitialstateandworkings
7、tateoffiniteelementmodelthroughstaticanalysis,intheend,Ⅱleconclusionwillbeobtainedfromanalysisandcorrectnessoffiniteelementanalysiswillbeverified..Inthispaper,4TPS—PSparallelmechanismistheobjectofstudywithaseriesofstudies,whichhasacertainreferencevalueforthefuturedevel
8、opmentofsuchmechanism,inapplicationsoflessdegreesoffreedomorganization,italsohasaIlAbstractvitalpracticalsignificance
此文档下载收益归作者所有