ARM控制的伺服點(diǎn)焊槍的研制.pdf

1、天津大學(xué)碩士學(xué)位論文ARM控制的伺服點(diǎn)焊槍的研制姓名：王軍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料加工工程指導(dǎo)教師：羅震20070601ABSTRACTE1ectrodepressureisoneofthemainfactorofresistancespotwelding，、ⅣhoeSstablilityaIldconvenibil時(shí)areveryimportanttOassuringgoodweldingqualityButadmenweldin

2、ggunwhichiswidelyusedinfactoriescannotchangeelect∞depressureata11Sothispapertendstodesignanewtypeofhangingspotweldingsevogunwhichiscapableofchangingtheelectrodepressureinrealtimeduringweldingprocess，inordertoCatTyoutcomp

3、lexweldingcirclesandimproveweldingqualityThegunisdrivenbyservomotorandhasaballscrewasitsmamtrans刪sslonpartItisdesignedsimply’andcompactlyandmovessmoothlyandfexiblelyTheSystemempolys32bitARMmicro—controllerasthecontrollin

4、gCOreComparedt0usingtraditiohalMCU，thesystemisprovidedwithmuchhigherfrequnencyandmOrepo、ⅣerfIlllhardwareMoreoverrealtimeoperatingsystemuC／OSIIismigratedintotheSvstem，baseonwhichalayed，multitasksandmessage’drivenso撇esyste

5、mlsfounded，whichfullymakesgooduseoftheadvantageofARMandbringsbetterstabilityandmorerapidresponseDuringspotwelding，servomotorisworkinginthetorquemodeElectrode’spressureaIldmovmgspeedCanbecontrolledbyanalogvoltageinputElec

6、trode7spressureandpositioncanbemeasuredbytheAndtheweldingcurrentcanbecontrolledfeedbacksignalfromthemotordrivebycommollI／0Thusanopenloopcontrollingsystemisf0珊ed一一Experimentalresultsprovethatthegun’saccuracyandresponsetim

7、ecanallmeettheweldingneedsandithasmanymorefunctions，suchashigh‘speedrcaching，lowspeedcrawling，gentlyelectrodetouching，shorttimepre。pressmgand80on‘whichareveryimportanttoexpandelectrodelifeandimproveweldingettlclencyFurth

8、ermore，theservoguncalloffersaddleshapedelectrodepressuremthemlldsteelweldingexperimentIncomparisonwithconstantelectrodepress哦，itcanefficientlvreduceweldingexpulsion，improvetheweld’sintensionandplasticityandobviouslyimpro