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1、外文翻译(原文)PlantModelGenerationforPLCSimulationHyeong-TaeParkAbstract:ThispaperreportsanautomatedprocedureforconstructingaplantmodelforPLCsimulation.SincePLCprogramscontainonlythecontrollogicwithoutinformationontheplantmodel,itisnecessarytobuildthecorrespondingplantmodeltoperformthesimula
2、tion.Conventionally,aplantmodelforPLCsimulationhasbeenconstructedmanually,whichrequiresmucheffortandindepthknowledgeofthesimulation.Asaremedyforthisproblem,weproposeanautomatedprocedureforgeneratingaplantmodelfromthesymboltableofaPLCprogram.Todoso,weproposeanamingruleforPLCsymbolssotha
3、tthesymbolnamesincludesufficientinformationontheplantmodel.Byanalysingsuchsymbolnames,weextractaplantmodelautomatically.Theproposedmethodologyhasbeenimplementedandtestrunsperformed.Keywords:agilemanufacturing;CAD/CAM;CAPP;simulation1.IntroductionTosurviveandprosperinthemodernmanufactur
4、ingera,manufacturersneedtocontinuouslyimprovetheirproducts,aswellastheirproductionsystems.Amodernmanufacturinglineisahighlyintegratedsystemcomposedofautomatedworkstations,suchasrobotswithtool-changingcapabilities,ahardwarehandlingsystemandstoragesystem,andacomputercontrolsystemthatcont
5、rolstheoperationsoftheentiresystem.Sincetheimplementationofamanufacturinglinerequiresheavyinvestment,properverificationofaline’soperationalstatusshouldbeperformedtoensurethatthehighlyautomatedmanufacturingsystemwillsuccessfullyachievetheintendedbenefits.Simulationtechnologyisconsidered
6、tobeanessentialtoolinthedesignandanalysisofcomplexsystemsthatcannotbeeasilydescribedbyanalyticalormathematicalmodels.Simulationisusefulforcalculatingutilisationstatistics,findingbottlenecks,pointingoutschedulingerrors,andevenforcreatingmanufacturingschedules.Traditionally,varioussimula
7、tionlanguages,includingARENAandAutoMod,havebeenusedforthesimulationofmanufacturingsystems.Thesesimulationlanguageshavebeenwidelyacceptedbothbyindustryandbyacademia;however,theyremainasanalysistoolsfortheroughdesignstageofaproductionline,becausetheirsimulationmodelsarenotsufficientlyr