超声波电源的设计

集美大学毕业设计论文毕业设计题目超声波电源的设计专业机械设计制造及其自动化班级机制0614姓名陈曦曦学号2004710175指导教师胡玉生职称副教授机械工程学院2010年6月2日超声波电源的设计I超声波电源的设计[摘要]几十年来，超声加工技术的发展迅速，在型孔和型腔的加工、切割加工、超声波清洗、超声复合加工、超声波焊接领域均有较广泛的研究和应用，解决了许多关键性的工艺问题，取得了良好的效果。本文首先介绍了国内外在超声波电源方面的发展状况，然后详细分析了超声波设备的组成、关键技术以及设计难点，并以一种200w超声加工电路为方案设计、制作了超声波发生器，应用于超声加工。通过对模拟与数字超声电源基本电路的介绍，了解超声波电源的频率跟踪、功率控制、稳速、过电压、过电流以及阻抗匹配等关键技术。接着对所设计电路的各部位电路进行分析和设计。在此基础上，详细介绍了整流电路、滤波电路、半桥逆变电路、超声波发生器与换能器的匹配设计以及用Protel软件设计PCB图，然后进行电路板的制作和试验。最后对所设计的电路的特点进行归纳与总结。[关键词]:：超声波发生器；超声波换能器；频率跟踪；阻抗匹配；半桥逆变电路超声波电源的设计IITheDesignOfUltrasonicPowerAbstractThedevelopmentofultrasonicmachiningtechnologyisrapidfordecades.Typeholesandcavitymachining,cutting,ultrasoniccleaning,ultrasonicprocessing,andultrasonicweldinghaveawiderfieldofresearchandapplication,solvesmanykeytechnologyissues,achievedgoodresultsThispaperintroducesthedomesticandinternationalaspectsinthedevelopmentofultrasonicpowerfirst.ThenadetailedanalysisofthecompositionofultrasonicequipmentKeytechnologiesanddesigndifficultiesAnddesigna200wultrasonicgeneratorwhichisusedinultrasonicmachining.Throughthepowerofanaloganddigitalultrasounddescriptionofthebasiccircuit,Learnaboutthefrequencyofultrasonicpowertracks,powercontrol,steadyspeed,overvoltage,overcurrentandimpedancematchingkeytechnologies.Thendesignedcircuitstoallpartsofthecircuitanalysisanddesign.Onthisbasis,Detailsoftherectifiercircuit,filtercircuit,push-pullinvertercircuit,impedance,UltrasonicgeneratorandthematchingdesignoftransducerandPCBdesignusingProtelsoftware,andthenproceedtocircuitboardproductionandtesting.Finally,thedesigncharacteristicsofthecircuitofinductionhavesummedupandsummarized.Keywords:ultrasonicgenerator;ultrasonictransducer;frequencytracking;Impedancematching;half-bridgeinvertercircuit超声波电源的设计III目录摘要·············································································································IAbstract·······································································································II引言············································································································11超声加工技术···························································································41.1超声波加工的原理···················································································41.2超声波加工的特点···················································································41.3超声波加工的应用···················································································52模拟与数字超声电源的基本电路···································································72.1模拟电路超声波发生器············································································72.1.1超声波振荡器······················································································72.1.2超声波放大器······················································································72.2数字超声波发生器···················································································72.3频率跟踪·······························································································92.4功率控制······························································································112.4.1输出功率控制系统·················································································112.4.2功率控制系统中UC3875的应用·····························································122.5保护电路·······························································································132.5.1稳速电路·····························································································142.5.2过电压、过电流保护电路······································································142.5.3缓冲电路···························································································15350W超声波发生器的电路设计····································································173.1总体方案设计························································································173.2整流、滤波电路的设计···········································································173.3半桥逆变电路设计···················································································203.4磁环变压器···························································································213.5超声波发生器与换能器的匹配设计····························································213.5.1阻抗匹配·····························································································223.5.2调谐匹配···························································································243.5.3关于匹配电感的设计············································································25超声波电源的设计IV3.6系统电路原理图·····················································································263.6.1电路的工作原理····················································································273.6.2各个元器件的作用···············································································283.6.3元器件的选取·····················································································284.1印刷电路板设计··········································