欢迎来到天天文库
浏览记录
ID:36349517
大小:3.64 MB
页数:112页
时间:2019-05-09
《制造执行系统MES若干关键技术研究》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、大连理工大学博士学位论文制造执行系统(MES)若干关键技术研究姓名:王万雷申请学位级别:博士专业:机械制造及其自动化指导教师:刘晓冰20051001制造执行系统(MES)若干关键技术研究Abstractnleglobaleconomicdevelopmentshowsthatacountry’spowermainlydependsonitsmanufacturing’scapacitytomanufactureproductsandprovideservice.Theworkshopisthebasiclinkofamanufacturingchain,t
2、heconnectionofmanagementandmanufactureandthejointofinformationstreamsandmaterialstreams.ItisanurgenttaskforChinesemanufacturingtoemployinformationtechnologyandup··to--datemanagementideasinproductionorganizationsoastoimprovetheircompetitivepower.ManufacturingExecutionSystem(MES)ist
3、heapplicationoftheup-to—dateinformationtechnologyinworkshopmanagement.Itistheworkshop—orientedproductioncontrolinformationsystembetweentheplansystemandthecontrolsystem.StartingwiththeanalysisoftechnologyactualitiesandtrendinthedevelopmentofMES,thisthesisisaimedatsolvingthebottle—n
4、eckproblemsinMESwhichblockthedevelopmentofworkshopproductioncontrolsystemandfocusesonseveralkeytechnologiesinMES.Themaincontentsareasfollows:11Thisthesisdevelopsanewmodelingmethodofmaterialprocessstateforenterprisestomakethereal—timerollingproductionplan.Bydefiningmaterialprocesss
5、tatevector,thematerialprocessstateisdescribedaccuratelywiththevaluecorrespondingtothevector.Inthisway.anunfinishedprocesscanbedescribedprecisely.Thisnewmethodmakesitpossiblethattheunfinishedprocedureisrearrangedintoanewproductionplan.Itensuresthereal-timeandaccurateworkshopproduct
6、ionplanrearrangement;2)ConsideringthestaticBOM(Billofmaterial)cannotbeonthereal—timeandaccuratetrackofthedynamicmaterialmachiningprocess,adynamicMBOM(Manufacturingbillofmaterial)modelismade,whichlinksmaterial,materialprocedure,materialprocessstate,processingtimeandmanufacturingres
7、ourcesclosely.Thismodelmakestheaccuratelocationofthein—processmaterialpossibleandprovidesaneffectivetheoreticalmodelforthereal—timeandaccuratetrackofmaterials;3)Inviewofthemanufactureofmulti—modelproducts,therandomicityofworkshopenvironmentandthefuzzinessoftheprocessingtimeandthed
8、ue—timeandbasedonproductassemblyk
此文档下载收益归作者所有