公开(公告)号：WO1997045833A1

公开(公告)日：1997-12-04

申请号：PCT/US1997008638

申请日：1997-05-21

Applicant: SYQUEST TECHNOLOGY, INC.

Inventor： SYQUEST TECHNOLOGY, INC. ,  PHAM, Ich ,  DROUIN, David ,  HOWARD, Evelyn

IPC: G11B05/596

CPC classification number: G11B21/106 ,  G11B5/5534 ,  G11B5/5547 ,  G11B5/59627 ,  G11B21/083

Abstract: A method for applying an optimal seeking technique to a disk file with excessive repeatable runout includes a method of modifying a control signal (ue(k)) provided by a controller (16) for controlling a rotary actuator arm (12) of a disk drive. The control signal (ue(k)) is modified during track seeking by adding a runout state (xa(k)) that is calculated each time a servo sector of a target data track on a surface of a disk is sampled by read/write heads carried by the actuator arm by a runout compensator (18). The modified control signal (up(k)) is provided to the actuator (12) for positioning the head to a desired track. A calibration algorithm can be used during track following to determine runout magnitude and runout phase at various preselected calibration tracks on the surface of the disk. A seeking algorithm can be implemented to compensate for the relative runout magnitude and phase variation between calibration and target tracks.

Abstract translation: 一种对具有过多可重复跳动的盘文件应用最佳寻找技术的方法包括一种修改由控制器（16）提供的用于控制盘驱动器的旋转致动器臂（12）的控制信号（ue（k））的方法， 。 通过添加每次通过读/写采样盘表面上的目标数据轨道的伺服扇区时计算出的跳动状态（xa（k）），在轨迹寻找期间修改控制信号（ue（k）） 由致动器臂由跳动补偿器（18）承载的头部。 修改的控制信号（up（k））被提供给致动器（12），用于将头部定位到期望的轨道。 轨道跟踪期间可以使用校准算法来确定磁盘表面上各种预选校准轨迹的跳动幅度和跳动相位。 可以实现搜索算法来补偿校准和目标轨道之间的相对跳动幅度和相位变化。