Patent ID: 6429996
Filing Date: 2002-08-06
Classification: G11B

Abstract:
A head-positioning control system for use in a disk drive incorporating a head for reading data from a disk and an actuator for moving the head from a start position to a target position on the disk, said system comprising:control means for controlling the actuator in accordance with a gain and a difference between the position of the head and the target position, causing the actuator to perform a seek operation, moving the head from the start position to the target position; generating means for generating seek profile data in a settle region during the seek operation in accordance with a plurality of gain values; evaluating means for evaluating the seek profile data in accordance with each of the gain values; and determining means for determining a gain value appropriate for the system from the gain values in accordance with the seek profile data evaluated by said evaluating means and setting the gain value appropriate for the system as the gain of said control means.