| 摘要 |
<p>An apparatus and method for compensating actuator arm oscillation induced by resonance mode excitation during a seek in a disc drive data handling system. The actuator arm supports a head adjacent a recording surface, and a servo loop controls the position of the actuator arm. A frequency arm oscillation is identified (302), after which a seek is initiated (304) to move the head from an initial track to a destination track on the recording surface. A position error signal (PES) is generated to indicate position of the head relative to the destination track, and a compensation signal is generated by filter based on the PES and the frequency of oscillation of the actuator arm. The compensation signal is adapted to remove a component of the PES arising from the actuator arm oscillation, and is applied to the servo loop (306) during settling. The compensation signal accelerates the settling so that track follow mode is reached more rapidly (308), after which the compensation signal diminishes or is otherwise removed (310).</p> |
