简介:本文研究了功率超声外科手术设备的自动频率跟踪技术.首先,分析了功率超声振动系统中振速与频率之间关系,把频率跟踪过程表述为一维变极值点的寻优问题.然后,结合自寻最优自适应控制方法和模糊控制方法,提出了一种模糊自寻优控制方法来实现自动频率跟踪.通过对梯度自寻优控制方法和模糊自寻优控制方法进行实验比较,得出模糊自寻优控制方法能够解决频率瞬变漂移的跟踪问题.
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简介:3-levelthreephasesoft-switchingPWMrectifierwithsingleauxiliaryresonantcommutatedsnubbercircuit;ABufferManagementSchemeinDiffservNetwork;Abuffer-basedbasebandanalogfrontendforCMOSBluetoothreceivers;Acollaborationmodelforbetterreliabilityandperformanceforobject-baseddistributedapplicationsovertheInternet;AComprehensiveAnalysisofIndirectBranchPrediction……
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