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    • 3. 发明授权
    • Motor stabilizing control apparatus for use with motors, including for
use with a drum motor in a magnetic tape system
    • 用于电动机的电动机稳定控制装置,包括用于磁带系统中的鼓电动机
    • US5617266A
    • 1997-04-01
    • US129371
    • 1993-09-30
    • Kouji KaniwaKouji MinabeHiroya AbeYukinobu TadaYoshio Narita
    • Kouji KaniwaKouji MinabeHiroya AbeYukinobu TadaYoshio Narita
    • G11B15/467G11B15/473H02P29/00G11B21/04
    • G11B15/4731G11B15/4671G11B15/4673
    • A motor speed control device includes a frequency signal generating circuit for generating a frequency signal proportional to a rotation frequency of a motor, a frequency measuring circuit for measuring a frequency of the frequency signal, a speed error signal extracting circuit for extracting a speed error signal by operation comparing the frequency of the frequency signal with a predetermined control target period, a filter circuit for eliminating rotation frequency components of the motor contained in the frequency signal or the speed error signal and harmonic components thereof to output another speed error signal, and a speed error signal feedback circuit for feeding-back negatively the other speed error signal from the filter circuit to the motor, in which owing to the fact that the filter circuit has predetermined transfer functions, it suppresses non-uniform components contained in the speed error signal and the phase error signal due to the frequency signal (DFG signal) proportional to the rotation speed of the drum as well as an addition signal of them.
    • 电动机速度控制装置包括:频率信号发生电路,用于产生与电动机的旋转频率成比例的频率信号;频率测量电路,用于测量频率信号的频率;速度误差信号提取电路,用于提取速度误差信号 通过将频率信号的频率与预定的控制目标周期进行比较的操作,用于消除包含在频率信号中的电机的旋转频率分量或速度误差信号及其谐波分量的滤波器电路,以输出另一个速度误差信号,以及 速度误差信号反馈电路,用于反馈从滤波器电路到电动机的另一个速度误差信号,其中由于滤波器电路具有预定的传递函数,其抑制包含在速度误差信号中的不均匀分量 和相位误差信号由于频率信号(DFG信号)的比例 与鼓的旋转速度以及它们的相加信号。