简介:Adistributedcontrolsystemisdesignedforplasmasprayingequipmentandtheconfigurationsofsystemsoftwareandhardwareisdiscussed.Throughfoundinganexpertdatabase,thesprayingprocessparametersareworkedoutandtheinitializationandcontrolofsprayingprocessarerealized.Theplasmasprayingsystemwiththiscontrolconfigurationcansimplifythesprayingoperation,improveautomationlevelofsprayprocess,andapproachtheexperiencecriterionassoonaspossible.
简介:Anewkindofcontrolsystemforkeyholeplasmaarcwelding(K-PAW)wasdevelopedbasedonthecomputerandtheGraphicsLanguage-LabVIEW.Itcansetandoutputtherequiredcurrentwaveformswithdesireddecreasingslopessothatthecorresponding'openingandclosing'ofkeyholecanoccurperiodically.Withthiscontrolstrategyofweldingcurrentwaveforms,theworkpieceisfullypenetratedwhilenoburn-throughoccurs.Keyholeplasmaarcweldingexperimentswereconductedtoverifythestabilityandreliabilityofthedevelopedsystem.
简介:Robot-basedremanufacturingsystemcanscanthewornpartsanddevelopthecorrespondingmodels,comparethemwiththestandardmodel,calculatethewelddeposit,implementweldingpathplanning,andrepairthewornpartswithMIGsurfacingautomatically.Thispaperinvestigatestheweldingpathplanningaftercalibrating,scanningandmodelrebuilding.Thefollowingaspectsarecontained:introducingtheplanningprinciple,selectingthesuitableweldingprocessbasedonweldingparameters(currentandspeed),calculatingweldingoverlapquantitybythesuperpositionmethod.Also,ithasbeenverifiedthatgoodweldprofilecanbeobtainedwiththeoptimizedparameters.
简介:AfteranalyzingtheweldingprocedureknowledgeinChinesenationalstandardsforweldingprocedurequalificationofsteelpressurevesselfromthepointofestablishingexpertsystem,itcanbedividedintofivetypesofknowledge,i.e.practice,definition,regularity,processanddescriptionknowledge.Theknowledgeexpressionmethodsareestablishedaccordingtothedifferenttypeofweldingprocedureknowledge.Thereasoningprocessbasedonruleisadopted.Andthereasoningengineisembeddedamongobjectsintegratedwiththeknowledgebase.
简介:AnewtypeofDZ9000EOxygenGaseousHVOFsystem(GHVOF)isdevelopedwhichcanreducethecostofcoatingsandincreasethein-situremovabilitytoadaptvariousworkingconditions.Thewholesystemiseconomical,whichenablesthesystemtomeettherequirementofsprayingmediumorlowcostHighVelocityOxy-Fuel(HVOF)coatingsformediumandsmalljobshops.ThedepositedcermetscoatingsbytheDZ9000EsystemhavegoodperformancewithaveragemicrohardnessHV0.2ofmorethan1000andthebondstrengthbetweencoatingandsubstrateofgreaterthan50MPa.
简介:Aimingattheweldingconditionofspacecomplexseamisuncertainandtheintelligenceofweldingrobotisunideal,atwo-wheeledmobilerobotisdeveloped.Itnotonlyhasthecapacityofautonomousdecisionandavoidingobstacles,butalsocanflexiblymoveandstronglyadaptvariableenvironment.Thecompositionoftheweldingrobotisdescribedandthedynamicmodelisestablished.Thefeasiblecontrolstrategyandcontrolalgorithmisputforward.Thesimulationexperimentsofrealworldareconducted,theresultsaresatisfying.
简介:WiththebackgroundofthecontrolofadditionalmechanicalforcedroplettransferinMIG/MAGwelding,regardingtheACservomotorascore,anoveloscillatingwirefeedingsystemhasbeendevelopedwithexcellentperformancesofcontrolanddynamicaccelerationwhichistested.Systemconstitutionandoperationprincipleareintroducedinthispaper.Influencesofparametersondynamicaccelerationperformanceareanalyzedanddiscussedemphatically,suchasoscillatingfrequency,oscillatingamplitudeanddraw-backspeed.Experimentalresultindicatesthataccordingtothetechniqueofweldingcontrol,thenovelwirefeedingsystemrespondsrapidlytovariouskindsofcontrolordersofwirefeedinganddraw-back,andrealizesflexiblecontrolofweldingwireaxialmovement,includingdynamicshifting,oscillatingandsoon.
简介:AccordingtothemaintoolsofTRIZ,thetheoryofinventiveproblemsolving,anewflowchartoftheproductconceptualdesignprocesstosolvecontradictioninTRIZisproposed.InordertorealizeautonomousmovingandautomaticweldseamtrackingforweldingrobotinTailedWeldedBlanks,acreativedesignofroboticvisualtrackingsystembasedonCMOShasbeendevelopedbyusingtheflowchart.Thenewsystemisnotonlyusedtoinspecttheworkpieceaheadofaweldingtorchandmeasurethejointorientationandlateraldeviationcausedbycurvatureordiscontinuityinthejointpart,butalsotorecordandmeasuretheimagesizeoftheweldpool.Moreover,thehardwareandsoftwarecomponentsarediscussedinbrief.
简介:ThisinvestigationwasperformedtostudyacousticfieldsignalinordertoimproveRSWquality.Researchersfirstlybuiltanacousticarraysensorsystem,whichincluded8MPA-416acousticsensors,dataacquisitioncardandLabVIEW.Thesystemobtainedtheacousticfieldinformationintheprocessofnuggetgrowing.Duetothenonlinearityfieldsignal,arraysensoralgorithmwasutilizedtoquantitativelyanalyzethecharacteristicsofacousticfieldandreducednoise.TheexperimentandcalculationresultsshowthatarraysensorsystemcanacquireacousticfieldsignalofnuggetgrowingintheRSWprocessandarrayprocessingalgorithmbasedonacousticfieldcanextractcharacteristicparameterstoevaluateRSWquality.ItwasconcludedthattheacousticarraysensorsystemoffersanewmethodologyforRSWqualityinspection.
简介:Adigitalarcweldingpowersupplywasdesignedwiththeadvancedreducedinstructionsetcomputermachine(ARM)andembeddedreal-timemulti-taskoperatingsystemmicroC/OS-Ⅱ.TheARM,withitspowerfulcalculatingspeedandcompleteperipheralequipments,isverysuitabletoworkasthecontrollerofthedigitalpowersupply.ThemicroC/OS-ⅡtransplantedinARM,helpstoimprovetherespondentspeedagainstvariousweldingsignals,aswellasthereliabilityofthecontrollingsoftware.Theweldingprocessconsistsofninetasks.Thetasksofgreatsignificanceonreliabilityofthewelder,forexample,theA/Dconversionofcurrentandvoltage,enjoytoppriority.Toavoidsimultaneous-sharingonA/DconverterandLCDmodule,twosemaphoresareintroducedintoensurethesmoothperformanceoftheweldingpowersupply.Provenbyexperiments,theARMandthemicroC/OS-Ⅱcangreatlyimproveboththerespondentspeedandthereliabilityofthedigitalwelder.