System and method for dynamic control of ultrasonic magnetostrictive dental scaler

    公开(公告)号:US20060269900A1

    公开(公告)日:2006-11-30

    申请号:US11436784

    申请日:2006-05-18

    IPC分类号: A61C3/03

    CPC分类号: A61C17/20 A61C1/0015 A61C1/07

    摘要: A magnetostrictive ultrasonic dental scaler is disclosed. The magnetostrictive device comprises an oscillator adapted to provide electrical energy including a current and a voltage signal, a handpiece having a tool tip which vibrates in response to the electrical energy supplied to the handpiece and a control circuit. The control circuit includes a phase detector adapted to detect phase between current and voltage signals and to generate a phase detection signal as a function of the phase. The control circuit also includes a digital signal processor operatively connected to the phase detector. The digital signal processor adapted to process the phase detection signal through a digital loop filter to generate an error signal. The control circuit further includes a voltage controlled oscillator operatively connected to the digital signal processor, wherein the error signal outputs a voltage to operate the voltage controlled oscillator which in response thereto adjusts at least one of frequency and amplitude of vibrations of the tool tip.

    System and method for dynamic control of ultrasonic magnetostrictive dental scaler
    3.
    发明授权
    System and method for dynamic control of ultrasonic magnetostrictive dental scaler 有权
    超声磁致伸缩牙科动力学控制系统及方法

    公开(公告)号:US07614878B2

    公开(公告)日:2009-11-10

    申请号:US11436784

    申请日:2006-05-18

    IPC分类号: A61C1/07

    CPC分类号: A61C17/20 A61C1/0015 A61C1/07

    摘要: A magnetostrictive ultrasonic dental scaler is disclosed. The magnetostrictive device comprises an oscillator adapted to provide electrical energy including a current and a voltage signal, a handpiece having a tool tip which vibrates in response to the electrical energy supplied to the handpiece and a control circuit. The control circuit includes a phase detector adapted to detect phase between current and voltage signals and to generate a phase detection signal as a function of the phase. The control circuit also includes a digital signal processor operatively connected to the phase detector. The digital signal processor adapted to process the phase detection signal through a digital loop filter to generate an error signal. The control circuit further includes a voltage controlled oscillator operatively connected to the digital signal processor, wherein the error signal outputs a voltage to operate the voltage controlled oscillator which in response thereto adjusts at least one of frequency and amplitude of vibrations of the tool tip.

    摘要翻译: 公开了一种磁致伸缩超声牙齿矫正器。 磁致伸缩装置包括适于提供包括电流和电压信号的电能的振荡器,具有响应于提供给手持件的电能而振动的工具尖端的手持件和控制电路。 控制电路包括相位检测器,其适于检测电流和电压信号之间的相位,并产生作为相位的函数的相位检测信号。 控制电路还包括可操作地连接到相位检测器的数字信号处理器。 数字信号处理器适于通过数字环路滤波器处理相位检测信号以产生误差信号。 控制电路还包括可操作地连接到数字信号处理器的压控振荡器,其中误差信号输出电压以操作压控振荡器,其响应于此,调节工具尖端的振动的频率和振幅中的至少一个。