模糊环境下制造-再制造混合系统的库存控制研究

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1、西南交通大学硕士学位论文模糊环境下制造/再制造混合系统的库存控制研究姓名：刘经纬申请学位级别：硕士专业：管理科学与工程指导教师：马祖军20081101西南交通大学硕士研究生学位论文第1I页AbstractInrecentyears，withthedeteriorationoftheenvironmentandpeople’Senvironmentalawarenesshasbeencontinuouslystrengthened，somecountrieshavebeguntomakerelevantlawsandrequiredthemanufacturertoberes

2、ponsiblefortheproductlifecycle，andtorecycleusedproductsforreusingorenvironmentalprotectiontreatment．Remanufacturingbeingoneofefficientformsofproductrecoveryhasreceivedextensiveattentionfromindustriallyadvancedcountriesandbecomeoneofthemostefficientapproachesthatrealizethesustainabledevelop

3、ment．Originalequipmentmanufacturerisusuallyresponsiblefortheremanufacturingofusedproducts，whichformshybridmanufacturing／remanufacturingsystems(HMRS)，andinventorycontrolisoneofthekeyproblemsthatneedbesolvedinHMRS．Comparedwiththetraditionalinventorymanagement，inventorycontrolofHMRSismuchdiff

4、icult，thisiSbecausethattheHMRSincludemanufacturinginventoryandreturnandremanufacturinginventory,andthequantity，qualityandreturntimeofusedproductsareuncertain．Therefore，itisessentialtodoanin-depthstudyaboutinventorycontrolofHMRS．Basedontheexistingliteraturesandaimingatthecharactedsticsofhyb

5、ridmanufacturing／remanufacturinginventorysystems，inventorycontrollingofHMRSunderfuzzyisstudied．First，basalfuzzymodelisdevelopedonthebasisoftheassumptionthatthedemandrateandthereturnratearecharacterizedbyfuzzynumbers．ThesigneddistancemethodisemployedtOsolvethemodel，thevalidityofthemodeliSde

6、monstratedbyanillustrativeexample，andtheinfluencethatfuzzydemandrateontotalinventoryCOStperunittimeisanalyzed，andthendevelopingthebasalmodelfromthreeaspects．First,theleadtimeistakenintoaccount，afteranalyzingthedeferentinfluencethatfuzzyleadtimeandcertainleadtimeontotalinventorycostperunitt

7、ime，thechangeoftotalinventorycostperunittimeofHMRSundertheleadtimeofmanufacturingandremanufacturingisequalornottwosituationsalestudied．Second,disposalofreturnedproductsisconsidered，twofuzzyinventorymodelsaredeveloped，thesigneddistancemethodisemployedtosolvemod