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1、ModelingandControlofaMulti-AgentEngineeringProcess:anAlApproachtoConcurrentEngineeringAlexanderKottAlfCederquistCharlesKolIarCarnegieGroup,Inc.EngineDivisionCarnegieGroup,Inc.FivePPGPlaceFordMotorCompanyFivePPGPlacePittsburgh,PA1522221500OakwoodBlvd.Pittsburgh,PA15222EEEBuildingMailDrop15POB2053De
2、arborn,MI48121-2053AbstractWedescribesomeoftheconceptsbehindtheFunctionAdvisor,aprototypeknowledge-basedsystemthatsupportsConcurrentEngineering.TheprimaryobjectiveoftheFunctionAdvisoristosupport,direct,andmanageconsistencyandcompletenessofdesign-relatedandotherengineeringactivitiesinalarge,complex
3、,anddistributedengineeringorganization.Amongtheissuesaddressedbythesystemarethoseofdevelopingamodeloftheproductbeingengineeredandofusingtheresultingmodeltocontrolthemulti-agentengineeringprocess.WestartbydiscussingthenotionoftheConcurrentEngineeringandrelatedresearchefforts.Thenweoutlinetheneedsof
4、alargeengineeringorganizationandthefunctionalityofasoftwaretoolthatcouldaddressthoseneeds.Wesuggestthatthesoftwaretoolneedsamodeloftheproductbeingengineered,andpresentahierarchicalmodelthatincludesrepresentationofparts,interactions,andconstraints.WethendescribehowtheFunctionAdvisorusesthismodeltoa
5、ssureconsistencyoftheengineeringdecisionsbypropagatingconstraintsthroughanetworkofhumanagents,andconveyingengineeringinformationtoitsusersbyidentifyingarelevantenvironmentfortheirtasks.ThispaperappearedintheProceedingsof1990ASMEDESIGNAUTOMATIONCONFERENCE,CHICAGO,ILL(SEPTEMBER16-19,1990).WARNING:th
6、etexthasbeenproducedbyOCRfromahardcopy,andcontainsanumberoferrors.Contacttheauthorsforacopy.1.IntroductionConcurrentEngineeringisarelativelynewconcept,orsetofconcepts,appliedtothefieldofDesignEngineeringaswellasEngineeringingeneral.TherearemanyothertermsthatareeithersynonymouswithConcurrentEnginee
7、ringorcloselyrelated:SimultaneousEngineering,IntegratedDesignEnviron-ment,DistributedDesign,UnifiedLife-CycleEngineering,TechnicalInformationManagement,EngineeringDatabases,DesignforProducibility,DesignforAssembl