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1、万件，可以降低65%的在制品库存。按照每天2万件的产能，可以从20天的库存降为7天，实际由于生产要素的安全性等原因，设定为10天，具有明显的经济效益。最后，对精益生产规划结合软件仿真验证进行在制品库存管理方法进行了总结，并讨论了该方法的不足和局限，对未来的发展进行了展望。关键词：在制品库存管理，精益生产，软件仿真万方数据THERESEARCHOFWIPCONTROLMETHODBASEDONTHEPROCESSIMPROVEMENTABSTRACTBecauseofthefiercecompetition,theOEMindust
2、ryhasenteredameagerprofitera,thecostmanagementbecomesmoreandmoreimportantfortheoperations.Theproducthasshortlifecycleanduncertaindemand,sotheinventorycostisveryhigh.WIP(WorkInProduct)isanimportantpartofthetotalinventory.ThoughtheWIPcostssomuch,itisnoteasytofindanappro
3、priatewaytocontrolthequantityofWIPindailywork,becausetheWIPhascomplexrelationshipwithproduction,qualityandlayout.BasedontheresearchoftheproductionprocessandWIPcontrolmethodforJproductinHcompany,thekeyfactorsarefoundfortheWIPcontrolofOEMindustry.Andasolutionisgivenbyus
4、ingtheideaofleanproductionandthetechnologyofsimulationsoftware.Firstly,thebackgroundandsignificanceoftheWIPmanagementinHcompanyarediscussed.Accordingtothefeatureoftheelectronicproducts,aWIPmanagementmethodisproposedbycombiningtheleanmethodandsoftwaresimulation.Secondl
5、y,theproductionprocessandcurrentWIPmanagementmethodsareanalyzed.BycalculatingtheWIPinventorycostandinventorydistribution,threekeypointsofWIPmanagementareidentified:themassproduction,thelogisticsandtheproductionlayout.Thirdly,theimprovementsolutionsaregivenbasedonthele
6、anconcepttoaimattheabovethreekeypoints.Forthebatchproduction,thetraditionalmodeoflargequantitiesproductionischangedintoone-pieceflow;forthelogistics,thepushsystemischangedintopullsystem;fortheproductionlayout,thematerialflowisoptimized.ThesimulationsoftwarecalledPlant
7、Simulation(Version10.10)isusedfordetailproblemsthatcannotbesolvedbyleanmethodlikeverificationandoptimumparameters.Firstasimulationmodelisbuildandverifiedforthecurrentprocess.Thenbasedonthecurrentmodeltheoptimizationmodelisdeveloped.TheoptimumsolutionsaregivenbytheDOE(
8、DesignofExperiment)resultsfromtheoptimizationmodel,andtheoptimumsolutionswouldbeverifiedinthesimulationmodeltoo.Bytheoptimiz
