電阻點(diǎn)焊數(shù)據(jù)采集與分析系統(tǒng)的開發(fā).pdf

1、天津大學(xué)碩士學(xué)位論文電阻點(diǎn)焊數(shù)據(jù)采集與分析系統(tǒng)的開發(fā)姓名：楊繼尚申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料加工工程指導(dǎo)教師：廉金瑞2001.2.1ABSTRACTAluminumhasprominentadvantageswithregardtothereducingofenergyconsumptionandtheenvironmentalprotectionwhencomparedtOsteelSothevolumeapplicationofal

2、uminumisthedirectionoftheautomobileindustryResistancespotwelding(RSW)isthemainweldingmethodusedinvehiclemanufacturingButtherearetwoproblemswhenRSWisusedtoweldaluminum：beingdifficulttOcontroltheweldingqualityandtherapidde

3、teriorationoftheelectroden屺dataacquisitionandanalysissystemforRSWisdevelopedinthispapertoinvestigatethebaseoftheintelligentrealtimecontrollerandtherelationbetweenweldingconditionandweldingquality111esystemconsistsoftheda

4、taacquisitionsubsystemandthedataanalysissubsystemwhichareintegratedbytheRSWweldingconditionandqualitydatabaseThedataacquisitionsubsystemisbaseduponthecommunicationbetweentheuppercomputerandtheloweroneDatafilesformedbycol

5、lecteddataaretransmittedbydirectcableDigitalsignalprocessing(DSP)methodisusedtoprocessthecollectedsignaldatawithspectrumanalysisandcorrelationanalysisinordertogetthebaseoftherealtimecontrollerofRSWforaluminumAndmultivari

6、ablestatisticalanalysisisusedtoprocessexperimentaldatatoinvestigatethefeaturevaluewhichcanpresenttheformationoftheweldandinvestigatetherelationbetweenweldingconditionandweldingqualityandthatbetweenweldingconditionandelec

7、仕odelifeFoHowingconclusionsarereachedthroughexperiments：(i)thesystemhasuniformsamplinginterval，andCancorrectlysamplesignals，suchasweldingcurrentweldingvoltage，etc；(ii)thesplashcallbejudgedbytheamplitudespectrumorthefeatu

8、revalueoftheweldingvoltage；(iii)tberelationbetweenweldingconditionandweldingqualityCanbeanalyzedbymultivariablestaffsticalanalysis；KeyWord：AluminumResistanceDigitalsignalProcessingSpotWeldingDataAcquisitionDatabaseMultiv