| 摘要 |
The present invention relates to a servo control apparatus of a disk recording system and particularly to a servo control apparatus and method which are capable of controlling position of a head for recording digital data on a disk as recording media and reading the digital data. A digital servo control method for controlling a head driver for moving a head for reading servo information to a target track every a predetermined sampling period in a data storage system using disk recording media including the servo information indicating a divisional position of a recording area comprises the steps of detecting a current track position of the head in a current sampling period by determining information on a head position on a disk from the servo information, determining the current track position, an estimated speed in the next sampling period for moving to the target track by a control signal inputted in the head driver so that the head can be moved to the current track position, and an estimated position track of the head in the next sampling period, calculating a track interval between the target track and the estimated position track, and a target speed to move the head in correspondence with the interval, and calculating a difference value between the target speed and the estimated speed to thereby output a control signal corresponding to the difference value to the head driver.
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