Disk drive attenuating excitation of arm vibration mode by simultaneously driving secondary actuator for non-active head
    1.
    发明授权
    Disk drive attenuating excitation of arm vibration mode by simultaneously driving secondary actuator for non-active head 失效
    磁盘驱动器通过同时驱动非活动头的辅助执行器来衰减臂振动模式的激励

    公开(公告)号:US06972924B1

    公开(公告)日:2005-12-06

    申请号:US10816997

    申请日:2004-04-02

    IPC分类号: G11B5/48 G11B5/55 G11B5/596

    CPC分类号: G11B5/5556 G11B5/4813

    摘要: A disk drive is disclosed employing a primary actuator for rotating an actuator arm about a pivot in coarse movements, and first and second secondary actuators coupled to the actuator arm for actuating first and second heads in fine movements. A servo control system generates a first control signal applied to the first secondary actuator to position the first head over the first disk surface in fine movements while accessing the first disk surface. The servo control system phase shifts the first control signal by a predetermined phase to generate a second control signal applied to the second secondary actuator to attenuate excitation of at least one arm vibration mode.

    摘要翻译: 公开了一种磁盘驱动器,其采用主致动器,用于在粗略运动中围绕枢轴旋转致动器臂,以及联接到致动器臂的第一和第二辅助致动器,用于以精细运动致动第一和第二磁头。 伺服控制系统产生施加到第一辅助致动器的第一控制信号,以便在访问第一盘表面时以优良的运动将第一磁头定位在第一磁盘表面上。 伺服控制系统将第一控制信号相移一预定相位,以产生施加到第二辅助致动器的第二控制信号,以衰减至少一个臂振动模式的激励。