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简介:ThroughthepracticeofdevelopinganexpertsystemFBCDES(FeedBoxConceptualDe-signExpertSystem)fortheplanomillingmachineinCIMSERC(CIMSEngineeringResearchCenter)inChina,thepaperintendstointroduceacommonproblem-solvingstrategyforthemechanicalproductconceptualdesignexpertsystem.Meanwhilesomeproblemssuchassystemarchitecture,knowledgerepresentationsandinferenceenginesetsarealsodescribed.Ayetmoredetaileddiscussionisgiventothetechnicalproblemsforrealizingtwokeymodules,thatisconceptdesignmoduleandlayoutmodule.
简介:Thedesignreview,simulationandvalidationofaConceptualDesignArchitecture(CDA)forBallisticMissileDefense(BMD)arepresented.AninterceptsystemthatcontainsaGroundBasedInterceptor(GBI)anditsguidancesensors(bothradarandinfrared)aresimulated.3DmodelusingMATLABisdevelopedforamultistagetargetwithascentphaseaccelerationprofilethatdependsontotalmass,propellantmassandthespecificimpulseinthegravityfield.Theradarcrosssection(RCS)andinfraredradiation(IR)ofthetargetstructureisestimatedasafunctionoftheflightprofile.TheKillVehicle(KV)designisexaminedasafunctionoftheKVmass,accelerationcapability,aimpointoffsetandimpactenergytodestroythetarget.TheaimoftheCDAisto:detectthelaunchofathreatballisticmissile,determinewhetherthedetectedobjectisathreat,definethecharacteristicsofthethreatballisticmissile,developafiringsolutiontonegatethethreatballisticmissile,engagethethreatballisticmissile,andassesstheeffectivenessforballisticmissileintercept.ThearchitectureismodeledinMatlab.
简介:ACONFIGURATIONSYSTEMFORFASTENERDESIGN(ANAPPROACHTOWARDSCOMPUTERAIDEDCONCEPTUALDESIGN)GuangZhong;MikeDoonerACONFIGURATIONSYSTE...
简介:Thedevelopmentofnewproductsofhighquality,lowunitcost,andshortleadtimetomarketarethekeyelementsrequiredforanyenterprisetoobtainacompetitiveadvantage.Thispartofthepaperpresentsamethodologytoautomaticallysimulatetheconceptualdesignresultsinthevirtualentityform.Totheidentifiedbasicmechanisms,theirkinematicanalysisiscarriedoutbymatchingbasicBarranovtrusses,andtheirvirtualentitiesaremodeledbasedonfeature-basedtechniqueandencapsulatedasonedesignobject.Basedonthestructuresofthebasicmechanismsandtheirconnections,aspacelayouttothemechanicalsystemcorrespondingtothesymbolicschemeisthenfulfilled.Withthepreset-assemblyapproach,allpartsinthemechanicalsystemareputontoproperpositionswheretheconstraintequationsaremetaccordingtothespacelayoutresults.Inthisway,thevirtualentityassemblymodelofthemechanicalsystemrelativetothesymbolicschemeissetup.Theapproachpresentedinthispapercannotonlyobtaininnovativeconceptualconceptualdesignresults,butalsocanevaluatetheirperformancesunder3-Denviromentefficently.
简介:Thedevelopmentofnewproductsofhighquality,lowunitcost,andshortleadtimetomarketarethekeyelementsrequiredforanyenterprisetoobtainacompetitiveadvantage.Forshortingtheleadtimetomarketandimprovingthecreativityandperformancesoftheproduct,arule-basedconceptualdesignapproachandamethodologytosimulatetheconceptualdesignresultsgeneratedinconceptualdesignprocessinautomaticalvirtualentityformarepresentedinthispaper.Thispartofpaperpresentsarule-basedconceptualdesignmethodforgeneratingcreativeconceptualdesignschemesofmechanismsbasedonYan’skinematicchainregenerationcreativedesignmethod.Thedesignrulesareadoptedtodescribethedesignrequirementsofthefunctionalcharacteristics,theconnectionrelationshipsandtopologicalcharacteristicsamongmechanisms.Throughthegraphs-basedreasoningprocess,theconceptualdesignspaceisexpandedextremely,andthepotentialcreativeconceptualdesignresultsarethendugout.Byrefiningthedesignrules,thesolutionexplorationproblemisavioded,andthetendentiousconceptualdesignschemesaregenerated.Sincemechanical,electricalandhydraulicsubsystemscanbetransformedintogeneralmechansims,theconceptualdesignmethodpresentedinthispapercanalsobeappliedintheconceptualdesignproblemofcomplexmechatronicsystems.Andthenthemethodtoidentifyconceptualdesignschemesisgiven.