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ID:50199332
大小:4.26 MB
页数:49页
时间:2020-03-05
《差异工件且容量不同的批调度启发式算法研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、的差异工件且机器容量不同的批调度问题进行研究,给出了几种启发式优化算法对其分别进行求解。将本文的问题分为两个子问题:首先采用FFLPT和BFLPT启发式规则将所有工件进行分批;然后针对工件分组所得的批集合,分别采用FFLPT和BFLPT算法进斤批调度,将批集合分配到机器上进行加工。此外,在批调度过程中,通过M山tiFit算法来优化目标函数。通过仿真实验对文中所提的启发式算法和下界LB进行比较,验证性能并进行了性能分析,实验结果表明本文所给几种算法的有效性-BFLPT),其中BB(BFLPT算法的性能明显优于其他几
2、种算法。最后,总结本文的研究内容,并对今后的研究方向进行了展望。关键词:动态到达;差异工件批调度;启发式算法;容量不同;平行机nAbstractAbstractTheroductionschedulinroblemisacombinatorialotimizationroblemhaspgppp过broadbackground,andithasnowbeenapplied化manyfields,suchaslogistics,manufacturing,network
3、communicationandsoon■化Kfers化in过certaineriodofptimeallocationoftheshared巧sourcesbytheritsortandinorder化achieveoneorgh,severaltaretwewillhavetherationallanninanddistributionforeachtaskintheg,pgprocessofproduction,andthereasonable
4、schedulingschemecanimprovetheutilizationrateofresourcesandtheproductioneflBciencylargely,andreducetheroductioncosts,thuswillincreasethecometitivenessoftheenterrisealsocanppp,romotethedevelomentoftheSocietppy-Batchschedulingisanimportan
5、textensionofthetraditionalclassicalschedulingroblemsbecauseofitsmorecomrehensivetheoreticalbackroundandalicationp,pgppvalueinthereallifesoithasbecome泣hotsotofthecurrentroductionschedulin,ppgroblems.Inthebatchschedulinroblemitallowssever
6、alobsonasinlemachinepgp,jgforrocesst-inatthesametimeinthebatchschedulinroblemwihnonidenticalpg;gpobsizesitistoexloretheschedulinroblemthattheobswhoserocessi打timej,pgpjpgandsizearedifferentwillbeprocessedonthemachine;thedynamicc
7、ontextrocessinreferstothattheobswhichhavethedifferentarrivetimeswillconsiderpgjthestarttimeof化erocess.Theschedulinisoftenclos知totherealroductionpgpenvironmentbutalsobecauseofitsfeaturessuchasmankindsofoalftmetionsa,,yg,varietyof
8、constraints,uncertaintiesandsoon,somanybatchs
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