钢铁连退生产与板坯入库物流调度建模与优化

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1、万方数据东北大学硕士学位论文摘要关键词：冷轧；合同计划：入库垛位决策；差分进化算法；系统．Ⅳ．万方数据东北大学硕士学位论文AbstractModelingandOptimizationforProductionSchedulingProbleminContinuousAnnealingLineandSlabsLoadingProblemSteelIndustryAbstractThedevelopmentoftechnologyandthequalityoftheproductsinironandsteelindustrycandirectlyaffectthedevelopmentof

2、thenationaleconomy．Reasonableproductionandlogisticsschedulingisimportanttokeepthequalityoftheproducts，meanwhile，itishelpfultoshortentheproductioncycle，enhancetheproductivity,andreducetheproductioncosts．Coldrollingisanimportantproductionstageintheironandsteelindustrystageaftersteelmaking，casting，a

3、ndhotrollingprocess．Consideringtheproductionvarietyincoldrolling，reasonableproductionorganizationwillkeeptheproductionstableandfurtherreducetheproductioncosts；slabstockistheintermediateintheproduction，whichmeansitisnotonlythefinalproductofsteelmakingprocessbutalsothematerialsofsubsequentrollingpr

4、ocess．Slabstockscoordinatesteelmakingandrolling，andbalancethewholeproductionprocess．Optimizingslabstocksschedulinghasveryimportantsignificanceforcontinuousproductiontoimproveproductionefficiency．Thisthesisstudiestheproductionorderschedulingproblemforcontinuousannealinglineincoldrollingareaandslab

5、stackpositiondecisionproblemforhotrollingstorage．Bymodelinganddevelopingthedifferentialevolutionalgorithm，thethesiscanachievereasonablesolutionforthetwoproblems．Themaincontentsareasfollows：(1)Theproductionorderschedulingproblemforcontinuousannealinglineincoldrollingareaistodeterminetheorderselect

6、ionandschedulingwiththeobjectiveofml。nl‘mt—zlngthetotalproductioncost．Tosolvetheproblem，amathematicalmodelisformulatedwhichCanbeoptimallysolvedbyCPLEXinsmall-scale．ThenaDE．V．万方数据东北大学硕士学位论文Abstractalgorithmisdevelopedbasedonthestructureoftheproblem．Theefficiencyoftheproposedmodelandsolutionmethodi

7、sverifiedthroughexperiments．Withconsiderationoftheuncertaintyinproductionscheduling，anoptimizationviasimulationmodelisextendedfromtheabovemodelandaneffectivealgorithmisdevelopedtoachievethestablesolutionforthepractical