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ID:31982692
大小:3.20 MB
页数:72页
时间:2019-01-30
《基于精益生产的叉车混流装配线优化-研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、浙江理工大学硕士学位论文基于精益生产的叉车混流装配线优化研究ABSTRACTManyvarietiesofsmallbatchMixed-modeassemblylinehasbeenintensivelyapplied,butitsproductionefficiencyislowinmostenterpriseforthereasonofshortofsystemresearchinthisarea.SoitisimportantandnecessarytobuildareasonableoptimizationmodelforMix
2、ed-modeassemblyline.Onthebasisoftheoreticalresearchontheoptimizationofmixedflowassemblylined,thispaperanalyzesthecharacteristicandshortagesofthepresentstudyandproposesahybridoptimizationsystemwhichcombinestheleanproductiontheoryandmodernoptimizationmethods.Throughtheleanv
3、aluestream,thispaperidentifiestwomajorproblemsofMixed-modeassemblylineandproposesthewaytosolvethisproblems.theoptimalmodelofMixed-modeassemblylinebalancingproblemandmaterieldeliveryproblemisbuildandsolvedwithmodernoptimizationmethods.FortheMixed-modelassemblylinebalancing
4、problem,thispapersynthesizesproductoperatingtimeandassemblytechnologyandregardsproductionpaceminimizationandweightedaverageloadequilibriumofeachworkstationtobuildupanoptimizationmodelbasedonworkingspaceandassemblytoolconstraint.Inaddition,thegeneticalgorithmisusedtosolvet
5、hismodelandthecrossoverandmutationareimproved.AtlasttheoptimalsolutionforBalancingProblemofMixedModelAssemblyLineisprovidedbyMATLABsoftware.Forthematerialdistributioninmix-modelassemblylines,thispaperdesignthedifferentmaterialdistributionstrategyAccordingtothecharacterist
6、icsofparts.usingsynchronoussupplystrategyforthekeypartsandmakingthedistributionscheduleandoperationalprocedures.Forthespecialparts,usingtheSPSstrategyandoptimizingtheoperationalproceduresandnumberofvehiclesEmptypullstrategyisusedinthegeneralpart,theinfluenceofthemateriald
7、elivery,emptypick-upandtherateofmaterialofdifferentstationsareanalyzed,anemptypullmaterialdeliverymodelisbuiltbytakingtheshortesttraveldistanceofvehiclesandbalancingthedistributefrequencyofthesamerouteastheoptimizationobjective.Theemptypullmaterialdeliverymodelissolvedbyt
8、hegeneticalgorithm.Throughsynthesizingthemeritsoftheleanproductiontheoryandmodernoptimizationmet
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