Disk drive with actuator load/unload controller
    1.
    发明授权
    Disk drive with actuator load/unload controller 失效
    带执行器负载/卸载控制器的磁盘驱动器

    公开(公告)号:US06236527B1

    公开(公告)日:2001-05-22

    申请号:US09103758

    申请日:1998-06-24

    IPC分类号: G11B2102

    CPC分类号: G11B19/04 G11B5/54 G11B21/12

    摘要: A disk drive with means to prevent accidental landing of a head/slider on the disk surface is described. In one embodiment a shock sensor is provided to sense external shocks received by the mechanism. During loading (positioning) of the actuator bearing the head/slider over the disk, if a shock is sensed, loading is stopped and an immediate unloading is performed to return the actuator to the withdrawn position. In another embodiment the unload operation is performed when the rotational speed of the disk is changed. In another embodiment the unload operation is performed when the rotational speed of the disk drops below a threshold. A circuit and method for detecting when the rotational speed of the disk drops below a threshold is also provided. The unloading in the various embodiments may be performed using velocity control or without velocity control.

    摘要翻译: 描述了具有防止头/滑块在盘表面上意外着落的装置的磁盘驱动器。 在一个实施例中,提供了一种震动传感器来感测由机构接收的外部冲击。 在将头/滑块轴承到盘上的执行器的装载(定位)期间,如果感测到冲击,则停止加载,并立即执行卸载以将执行器返回到撤回位置。 在另一个实施例中,当盘的旋转速度改变时执行卸载操作。 在另一个实施例中,当盘的转速下降到阈值以下时,执行卸载操作。 还提供了一种用于检测盘的转速何时下降到阈值以下的电路和方法。 各种实施例中的卸载可以使用速度控制或无速度控制来执行。