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    Closed Loop Control Of Linear Vibration Actuator
    7.
    发明申请
    Closed Loop Control Of Linear Vibration Actuator 审中-公开
    线性振动致动器的闭环控制

    公开(公告)号：US20080191648A1

    公开(公告)日：2008-08-14

    申请号：US10546466

    申请日：2003-02-27

    申请人： Yoshiteru Ito ,  Subrata Saha ,  Taro Kishibe ,  Shinichiro Kawano ,  Koji Kameda ,  Kazushige Narazaki ,  Yasufumi Ikkai ,  Noriyoshi Nishiyama

    发明人： Yoshiteru Ito ,  Subrata Saha ,  Taro Kishibe ,  Shinichiro Kawano ,  Koji Kameda ,  Kazushige Narazaki ,  Yasufumi Ikkai ,  Noriyoshi Nishiyama

    IPC分类号： H02P7/29 ,  A61H1/00 ,  A63F13/06 ,  H04M1/00

    CPC分类号： G05D19/02

    摘要： In a closed loop control method of a linear vibration actuator which vibrates linearly and energized by a switching element driven in a PWM control method, a crest or peak point (Bc, Bp) of the back electromotive force occurring in the linear vibration actuator is detected (S14). The detected crest or peak point (Bc, Bp) is compared with a reference value (Bcr, Bpr) (S15), and adjusting the PWM duty (α) applied to the switching element and controlling the operating frequency of the linear vibration actuator to resonant frequency (S16 to S19), thereby keeping the crest or peak point (Bc, Bp) of the back electromotive force always constant.

    摘要翻译： 在以PWM控制方法驱动的开关元件线性地振动并且通电的线性振动致动器的闭环控制方法中，峰值或峰值点（B，C，B， 检测在线性振动致动器中产生的反电动势的“SUB”）（S14）。 将检测到的峰值或峰值点（B SUB C，B P P P）与参考值（B ，B （S115），并且调整施加到开关元件的PWM占空比（α）并将线性振动致动器的工作频率控制为谐振频率（S16至S19），从而保持峰值或峰值点 （B SUB，B SUB P）总是恒定的。

    Method of controlling a torque ripple of a motor having interior permanent magnets and a controller using the same method
    10.
    发明授权
    Method of controlling a torque ripple of a motor having interior permanent magnets and a controller using the same method 失效
    使用相同方法控制具有内部永磁体的电动机的转矩脉动的方法和控制器

    公开(公告)号：US5962999A

    公开(公告)日：1999-10-05

    申请号：US126020

    申请日：1998-07-29

    申请人： Tomokazu Nakamura ,  Noriyoshi Nishiyama ,  Yasufumi Ikkai

    发明人： Tomokazu Nakamura ,  Noriyoshi Nishiyama ,  Yasufumi Ikkai

    IPC分类号： H02P6/10 ,  H02P6/00

    CPC分类号： H02P6/10

    摘要： Torque ripples of a motor having interior permanent magnets can be reduced through the following method and the torque ripple controller using the same method: first, drive the motor having a plurality of phase windings and interior permanent magnets with a basic current supply circuit which outputs a basic current having a predetermined waveform, then store torque ripple waves produced in the running motor or obtained through a numerical analysis into a torque-ripple-wave-memory, next, compensate the torque ripple wave tapped off from the memory according to a prepared torque ripple compensation pattern and transform it to a torque compensation waveform with a torque-compensation-waveform-producing-circuit, further, multiply the torque compensation waveform tapped off from the waveform producing circuit by the basic current with a multiplier to output a torque ripple control current, and, supply the torque ripple control current to the plurality of phase windings shifting a phase by a predetermined electrical angle sequentially.

    摘要翻译： 具有内部永磁体的电动机的扭矩波动可以通过以下方法和使用相同方法的转矩脉动控制器减小：首先，用基本电流供应电路驱动具有多个相绕组和内部永磁体的电动机，该基本电流供应电路输出 具有预定波形的基本电流，然后将在运行电动机中产生的转矩脉动波或通过数值分析获得的转矩脉动波存储到转矩脉动波存储器中，接下来，根据准备的转矩补偿从存储器中抽出的转矩脉动波 纹波补偿模式，并用转矩补偿波形生成电路将其转换为转矩补偿波形，此外，将乘以基本电流的波形发生电路分接的转矩补偿波形乘以乘法器输出转矩脉动控制 电流，并且将转矩脉动控制电流提供给多个相绕组，使相位移位a 预定的电角度。