METHOD AND DEVICE FOR CONTROLLING MOTION OF ACTUATOR ARM ASSEMBLY IN DISK DRIVE MECHANISM

摘要

PROBLEM TO BE SOLVED: To accelerate and then decelerate an actuator arm so as to reduce the seek time of the arm in order to increase the data processing speed of a computer system. SOLUTION: Supplying a maximum current to a voice coil accelerates the actuator arm, and when the actuator arm travels by a prescribed distance, the direction of current is changed and a deceleration current is supplied in a saturation mode to the actuator arm to decelerate the actuator arm, Applying the deceleration current in the saturation mode can properly decelerate the actuator arm and allows the arm to come to a stop when the actuator arm reaches an object track position.