By Topic

Track seek control for hard disk dual-stage servo systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Kobayashi, M. ; Mech. Eng. Res. Lab., Hitachi Ltd., Ibaraki, Japan ; Horowitz, R.

A new decoupled track-seeking controller for a dual-stage servo system of a magnetic disk drive has been developed. The controller is applied to the dual-stage system with a push-pull piezoelectric (PZT) microactuator and enables high-speed one-track seeking and short-span track seeking. A one-track seeking controller was designed in three steps: (1) a voice coil motor (VCM) feedforward controller was designed to prevent overshoot in response of VCM actuator; (2) a feedforward loop from the VCM reference signal to the PZT actuator was designed in order to decouple the dual-stage actuator system; (3) a feedforward controller for the PZT actuator was designed such that an output PES (position error signal) only follows a PES reference signal. In the design of the short-span seeking controller, the PZT actuator's stroke limit was considered. Simulations and experiments show that the proposed dual-stage track-seeking controller performs better than the conventional single VCM servo

Published in:

Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 2 )