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    • 6. 发明授权
    • Device for controlling the motor of a recording and reproducing apparatus
    • 用于控制记录和再现装置的电动机的装置
    • US5581521A
    • 1996-12-03
    • US428965
    • 1995-04-25
    • Masaru NomuraMasaaki HananoTakeshi YamaguchiShigeo Terashima
    • Masaru NomuraMasaaki HananoTakeshi YamaguchiShigeo Terashima
    • G05B13/04G05D3/12G11B21/08G11B7/00
    • G11B21/083
    • The present invention is provided with a disturbance observer which outputs a compensating signal for compensating a driving signal of a linear motor in accordance with (1) an output signal of an acceleration sensor unit which mechanically detects an acceleration of the linear motor, the acceleration moving the optical pickup, and (2) the driving signal of the linear motor. A high pass filter which has a low frequency band cutoff frequency substantially same as that of the acceleration sensor unit is also provided on the path which is formed by connecting the input of the driving signal to the generated compensating signal in the disturbance observer. With the high pass filter, it is possible to prevent the linear motor from being driven too sensitively or too greatly by the disturbance observer due to the driving signal, vibrations, or shocks applied from outside, or noises from the acceleration sensor unit or the circuits, thereby avoiding the danger that the linear motor or the optical pickup is damaged.
    • 本发明提供了一种干扰观测器,其输出用于补偿线性电动机的驱动信号的补偿信号,根据(1)机械地检测线性电动机的加速度的加速度传感器单元的输出信号,加速度移动 光拾取器,和(2)线性电动机的驱动信号。 具有与加速度传感器单元基本相同的低频带截止频率的高通滤波器也设置在通过将驱动信号的输入连接到干扰观测器中产生的补偿信号而形成的路径上。 利用高通滤波器,可以防止由于来自外部的驱动信号,振动或冲击或来自加速度传感器单元或电路的噪声而导致的干扰观测器的线性电动机的过度敏感或太大的驱动 从而避免线性电动机或光学拾取器损坏的危险。