Patent ID: 6747836
Filing Date: 2004-06-08
Classification: G11B

Abstract:
A position control system for use in a disk drive system for positioning a head relative to a storage disk in response to an input command signal, the disk drive system including a primary actuator for positioning a primary actuator arm and a secondary actuator linked to the primary actuator arm for positioning a secondary actuator arm on which the head is mounted, the position control system comprising:a feedback system adapted for receiving the input command signal, for splitting the input command signal into a primary and a secondary input command signal and for modifying the primary and secondary input command signals to produce primary and secondary error signals; a primary actuator controller linked to the feedback system and the primary actuator and configured to receive the primary error signal and in response to transmit a primary control signal including primary actuator arm positioning information to the primary actuator; and a secondary actuator controller linked to the feedback system and the secondary actuator and configured to receive the secondary error signal and in response to transmit a secondary control signal including secondary actuator arm positioning information to the secondary actuator.