Method and apparatus for adaptive feedforward control with reduced noise during track seek operations

摘要

An adaptive feedforward control system for reducing noises during a track seek operation. A servo control apparatus of the invention generates a first adaptive feedforward, in which the first adaptive feedforward adaptively follows a current command for servo-controlling the hard disk drive at a servo control decelerating interval for the track seek, and the first adaptive feedforward has a linear slope. Further, a high frequency component is removed from the first adaptive feedforward. Therefore, it may be possible to remove the current control error as well as the noises during the track seek operation.