轿车发动机生产线平衡优化研究及应用

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1、同济大学机械工程学院硕士学位论文轿车发动机生产线平衡优化研究及应用姓名：高飞申请学位级别：硕士专业：工业工程指导教师：郑永前20080301ABSTRACTProductionlinebalancingproblemisanimportantmethodforthedesigningandreorganizationofproductionprocessesofthemanufacturingenterprises．Accordingtothelinebalancing，itconsistsofassigningoperationstoworkstationsinaproduc

2、tionlineinsuchawaysatisfyingtheprecedencerelations．hIthecar’sengineproductionsystem，theproductionlinebalancingproblemrelatestheefficiencyoftheentireengineproductionmanufacturesystem．Howtomaximizetheproductionefficiencyundertheexistingconditionandhowtobalancetheworkloadbetweentheworkstationsd

3、irectlyaffectstheworkingefficiency．Focusedontheca[’sengineproductionline，thispaperproposedanewvalidoptimizationalgorithmbasedongeneticalgorithm．Theoptimizationalgofitlmaisdesignedespeciallyforthecomplexityofthewholecat’sengineproductionlinewhichcansolvetheexistingbalancingproblem．Firstly,thi

4、spapersummarizedthepresentresearchsituationoftheproductionlinebalancingproblem．Itmadethedetailelaborationtotheproductionlinebalancingtechnologyandthecharacteristicofthecat’sengineproductionline．Muchrelatedtechnicalworktothecar’sengineproductionlinebalancingproblemhasbeenstudied．Secondly,them

5、ulti．goalmathematicalmodelofthesingleandfixedcar’Sengineproductionlinebalancingproblemhasbeenestablishedthroughthevariousrestraintrelations．Basedonthismodel，theoptimizationalgorithmbasedongeneticalgorithmhasbeendesignedforthecar’sengineprodutionline．Thisalgorithmhasbeenprovedtobevalidandfeas

6、iblecomparisonwithotheroptimizationalgorithms．Theexpansionresearchofthealgorithmhasbeencontinued．Itmeansthatgeneticalgorithmalsohasbeenusedtosolvethebalancingproblemconsideringtheinfluenceoftheactualoperationtimefactor．’Thirdly,theoptimizationalgorithmbasedongeneticalgorithmthatthispaperhasp

7、roposedhasbeenappliedonthecylindercapproductionlinebalancingproblemwhichitisoneofCar’Sengineproductionlineinacompany．TheevaluationoftheⅡAbstractbalancingresultaftertheoptimizationbyuseofthesimulationsoftwareEM—plantshowsthattheoptimizationalgorithm