金丝球焊线机数字控制超声波发生器的分析与设计

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1、ABSTRACTABSTRACTGoldballwirebondingmachineisanimportantequipmentofultrasoundbondingencapsulation，whichusesultrasonicwirebondingtechnology,pressureandultrasonicenergytogether,producesultrasonicmechanicalvibrationandleadswireincontactwiththepadatthefric

2、tionsurface，theexposuresurfaceinstantlygeneratehightemperatures，themetalatomsbetweenthewireandthespreadofthewafertoachievetheconnectionbetweenitsatoms．Ultrasonicgeneratordevicesasagoldballwirebondersultrasonicsignalsource，isanimportantpartofelectricsy

3、stemofthegoldballwirebonders，whichperformancebondpackagedirectlydeterminethequalityandefficiency．Thisthesisfocusesonthekeytechnicalissuesofultrasonicgenerator,whichresearchesthetheoryandcontrolmethodsofthedigitalcontrolultrasonicgenerator,designsthedi

4、gitalcontrolultrasonicgeneratorfrombothhardwareandsoftwareaspects，andproductionoftheexperimentalcircuitboardtestingandrelatedhardwareexperimentalvalidationofparameters．Themajorresearchaspectsinthisthesisareasfollows：Accordingtothedesignrequirements，th

5、eoverallprincipleisdetermined，andtheschemesarecomparedandstudied．Thesinewavegenerationcircuit，thetypeoffilter,poweramplifiersolutions，vibrationtransducer,andfrequencyautomatictrackingcircuitareanalysisedindetailtoprovidefoundationsforhardware．Inthehar

6、dwarecircuitpart，controlcircuitdesignofthemicrocontroller，DDSsignalgeneratorcircuit，filtercircuit，poweramplifier,thesignalacquisitioncircuit，thepowersignalconditioningcircuit，ultrasonicoutputtimecontrolswitchcircuit，thefeedbacksignalconditioningcircui

7、t，theimpedancematchingcircuit，displaycircuit，PCcommunicationcircuit，andpowercircuitaredesigned．Accordingly,theexperimentalcircuitboardareproduced．Inthesoftwarepart，softwareforthemaincontrollersystemaredesigned．Mainfunctionmodulesofthesystemsoftwarefra

8、meworkofthesystemareanalysisedanddesignedindetail，includingthemainprogramflowchaIrtofthemodule，thesinewaveIII广东工业大学工学硕士学位论文generatormodule，thePCcommunicationmodule，theserialportinterruptservicemodule，thepoweradjustmentmodule，ultrasonicoutputti