文档介绍：研究生优秀毕业论文研究生优秀毕业论文硕士学位论文垒!!竺型一——————————————————————————一AbstractWiththeadvantagesofnon-invasiveandwelleffect,,shoulders,waist,legs,knees,Joints,aswellas‘odealwimthemuscle-painproblemofpeopleunderhighpressureandoVerloadingwork,theintelligentdualfrequencyultrasoundphysiotherapyhasbeendesigned1nthispapeLAimedattheproblemsaboutsingleoutputfrequencyandsmallradlatlonareaofcurrentultraSoundphysiotherapy,theultrasoundphysiotherapydesignedinthispaperhasoutputfrequency,ofwhichthecenterfrequencyareMHzand3MHzseparatelY,,theultrasonicexcitationsignalisgeneratedbyDDS(DirectDigitalFrequencySvnthesizer)signalgenerator,whichwillbesenttopower锄pIifierclrcultnextaJldthenwiUbeconvertedintoultrasoundfinallybyultrasonictransducer·,,pared,andthefrequencygeneratedbytheDDSsignalgeneratorwlubead戤edinreal-time,,suchasthefriendlyman-machineinterface,。,andhasachievedthedesiredtechnicalparametersandthefunctionalrequirementsafterdebugging·Keywords:ultrasoundphysi。therapy,DDSsignalgenerator,如zzyc。删,厅equencyauto,tracking,dualfrequency,ultrasonictransducer·硕士学位论文智能双频超声理疗仪的设计与实现目录摘要????????????????????????????????????.IAbstract????????????????????????????????????II1绪论?????????????????????????????????????.???????????????????????..??????????????????????..???????????????????????..??????????????????????????一62