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简介：ＷｅｌｄｑｕａｌｉｔｙｃｏｎｔｒｏｌｂｙｎｅｕｒａｌｎｅｔｗｏｒｋＨｕａｎｇＳｈｉｓｈｅｎｇ；ＬｉＤｉａｎｄＳｏｎｇＹｏｎｇｌｕｎ（ＳｏｕｔｈＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙ）Ａｂｓｔｒａｃｔ：Ａｒｔｉｆｉｃｉａｌｎｅｕｒａｌｎ...

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简介：Anewtypecontrolmethodinfrictionweldingissuggestedinthispa-per,thatiscompositivecontrolmethodoffrictiontorqueandfrictiontime,itcalledMtcontrolmethodforshort.TheprincipleofMtcontrolmethodanditsfeatureareconciselyexplained.

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简介：Anewintelligentcontrolmetholforweldingpositionerispropsed.ApplyinganimprovedfuzzycontrollerandavariablePIDcontroller,atwo-modeintelligengcontroller(TMICC)isdsignedonbasisoffuzzylogicadnrules.Thesimulationandexperimentalresultsshowthatthiscontrolsystemcanobtainbetterdynamicandstaticcharacteristics.

简介：Anewkindofcontrolsystemforkeyholeplasmaarcwelding(K-PAW)wasdevelopedbasedonthecomputerandtheGraphicsLanguage-LabVIEW.Itcansetandoutputtherequiredcurrentwaveformswithdesireddecreasingslopessothatthecorresponding'openingandclosing'ofkeyholecanoccurperiodically.Withthiscontrolstrategyofweldingcurrentwaveforms,theworkpieceisfullypenetratedwhilenoburn-throughoccurs.Keyholeplasmaarcweldingexperimentswereconductedtoverifythestabilityandreliabilityofthedevelopedsystem.

简介：Aimingattheweldingconditionofspacecomplexseamisuncertainandtheintelligenceofweldingrobotisunideal,atwo-wheeledmobilerobotisdeveloped.Itnotonlyhasthecapacityofautonomousdecisionandavoidingobstacles,butalsocanflexiblymoveandstronglyadaptvariableenvironment.Thecompositionoftheweldingrobotisdescribedandthedynamicmodelisestablished.Thefeasiblecontrolstrategyandcontrolalgorithmisputforward.Thesimulationexperimentsofrealworldareconducted,theresultsaresatisfying.

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简介：IntheautomaticCO2arcwelding,thealterationoftheverticaldistancebetweentheweldingtorchandtheworkpiecehasastrongeffectontheweldingparameterssuchasweldingcurrentandvoltage,withtheresultthattheappearanceandqualityofweldarenotsteady.Toweakentheinfluenceofthedistancealteration,amethodisputforwardinthepaper.Themethodisthatthealternatewire-feedcontrolisusedforcompensatingtheweldingcurrent.Onthebasisoftheoreticalanalysis,astaticnumericalmodelforalternatewire-feedcontrolisestablished.Theexperimentsshowthatthemodel-basedregulationofthewirefeedratecancompensatetheweldingcurrentandensuretheappearanceofweld.Whenthealterationofverticaldistancebetweenthetorchandtheworkpieceisgreater,notonlyisthewirefeedrateregulated,buttheoutputvoltageofthepowersourceisadjustedtoensuretheappearanceandqualityofweld.

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简介：Anewelectronbeamcontrolsystemwasdevelopedinageneralvacuumelectronbeammachinebyassemblingwithindustrialcontrolcomputer,programmablelogiccontrol(PLC),deflectioncoil,dataacquisitioncard,poweramplifier,etc.Inthiscontrolsystem,scanningtrackandenergydistributionofelectronbeamcouldbeeditedoff-line,real-timeadjustedandcontrolledon-line.Ti-Mogradientmaterial(GM)withhightemperatureresistantwasfabricatedusingthetechnologyofelectronbeammelting.Themeltingprocessesincludethreesteps,suchaspreheating,melting,andhomogenizing.TheresultsshowthattheGMpreparedbymeltingtechnologyhasfineappearance,andithasgoodintegratedinterfacewiththeTialloy.MoandTielementsaregraduallydistributedintheinterfaceofthegradientmaterial.ThemicrostructureclosetotheTialloybasemetalisα+βbasket-wavergrain,andthemicrostructureclosetotheGMisasinglephaseofβsolidsolution.

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简介：AnewkindofsimpleandflexibleCO_2weldingsystemwasdevelopedtocarryoutwaveformcontrol.ThesystemconsistedofIGBTinverter,PWMcircuitandmicroprocessorunit(MPU),inwhichtheoutputcurrentofconstantcurrent(CC)powersupplycouldbechangedaccordingtotransientphysicalstate,andthevariabledownsloperatecontrolcouldbeusedtoensureastableweldingprocess.Theweldingexperimentresultsprovedtheeffectivenessofthiscontrolapproach.

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