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1、中国矿业大学2007届本科生毕业设计第9页英文原文FEATURE-BASEDCOMPONENTMODELSFORVIRTUALPROTOTYPINGOFHYDRAULICSYSTERMAbstract:Thispaperproposesafeature-basedapproachforthevirtualprototypingofhydraulicsystems.Itpresentsaframeworkwhichallowsthedesignertodevelopavirtualhydraulicsystem
2、prototypeinamoreintuitivemanner,i.e.throughassemblyofvirtualcomponentswithengineeringdata.Theapproachisbasedonidentifyingthedatarequiredforthedevelopmentofthevirtualprototypes,andseparatingtheinformationintobehaviour,structural,andproductattributes.Suitable
3、representationsoftheseattributesarepresented,andtheframeworkforthefeature-basedvirtualprototypingapproachisestablished,basedonthehierarchicalstructureofcomponentsinahydraulicsystem.Theproposedframeworknotonlyprovidesaprecisemodelofthehydraulicprototypebutal
4、sooffersthepossibilityofdesigningvariationclassesofprototypeswhosemembersarederivedbychangingcertainvirtualcomponentswithdifferentfeatures.Keywords:Computer-aidedengineering;Fluidpowersystems;Virtualprototyping1.IntroductionHydraulicsystemdesigncanbevieweda
5、safunction-to-formtransformationprocessthatmapsanexplicitsetofrequirementsintoaphysicalrealisablefluidpowersystem.Theprocessinvolvesthreemainstages:thefunctionalspecificationstage,theconfigurationdesignstage,andtheprototypingstage.Theformatforthedescription
6、ofthedesignineachstageisdifferent.Thefunctionalspecificationstageconstitutestheinitialdesignwork.Theobjectiveistomapthedesignrequirements.Toachievethis,thedesignproblemsarespecifiedCorrespondenceandoffprintrequeststo:DrS.C.Fok,SchooolofMechanicalandProducti
7、onEngineering,NanyangTechnologicalUniversity,NanyangAvenue,Singapore639798.Thedesignermustidentifytheperformanceattributes,whichcanincludepressure,force,speed,andflowrate,withtherequiredpropertiessuchassize,cost,safetyandoperatingsequence.performancerequire
8、mentsforeachattribute.Inthisstage,thedesignisabstractedintermsoftheperformanceattributeswithassociatedvalues.Theobjectiveoftheconfigurationdesignstageistosynthesiseahydrauliccircuitthatperformstherequi
