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面向对象Petri网的研究及其在柔性制造单元中的应用(英文).docx

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面向对象Petri网的研究及其在柔性制造单元中的应用(英文) ResearchonObject-OrientedPetriNetsandTheirApplicationinFlexibleManufacturingUnits Abstract Petrinetsareagraphicalmodelingtoolthathasgainedalotofpopularityinthefieldofmanufacturingsystems.ThetraditionalPetrinetshaveastaticstructure,andtheywereincapableofaddressingthedynamicbehaviorofmanufacturingsystems.Toovercomethislimitation,researchersproposedtheobject-orientedPetrinets,whichcanmodelthedynamicbehaviorofmanufacturingsystems.Besides,theobject-orientedPetrinetscanincorporatetheobject-orientedprinciplessuchasencapsulation,inheritance,andpolymorphism,whichmakestheirmodelingmorenaturalandstraightforward.Thispaperdiscussestheresearchonobject-orientedPetrinetsandtheirapplicationinflexiblemanufacturingunits.Westartbyreviewingtheprinciplesofobject-orientedprogrammingandtheirrelevanceinPetrinets.Then,wediscusstheobject-orientedPetrinetsandtheirmodelingconcepts.Afterward,wefocusontheapplicationofobject-orientedPetrinetsinflexiblemanufacturingunits,demonstratinghowthesenetscanbeusedtomodeltheinteractionsbetweenmachines,operators,andmaterials.Weconcludebydiscussingthebenefitsandlimitationsofobject-orientedPetrinetsinflexiblemanufacturingunits. Keywords:Petrinets,Object-orientedprogramming,Manufacturingsystems,Flexiblemanufacturingunits Introduction Petrinetshavebecomeoneofthemostwidelyusedmodelingtoolsinmanufacturingsystems.ThispopularitystemsfromtheabilityofPetrinetstomodelthedynamicbehaviorofmanufacturingsystems.Sincetheirinception,Petrinetshavebeenappliedinareassuchasscheduling,control,andmodelingofmanufacturingsystems.However,thetraditionalPetrinetshavesomelimitations.Theyarestaticinnature,whichmeansthattheycan'tmodeldynamicbehavior.Besides,theyarenotscalable,sincethemodelingcomplexitygrowsrapidlywiththeincreasingnumberofcomponentsandinteractionsinthesystem.Toaddresstheselimitations,researchershaveproposedtheobject-orientedPetrinets,whichintegratetheobject-orientedprinciplesofprogrammingintoPetrinets. Object-orientedprogramming(OOP)isaprogram