We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

Closed-loop control of a microfabricated actuator for dual-stage hard disk drive 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

5 Author(s)
Horsley, D.A. ; Dept. of Mech. Eng., California Univ., Berkeley, CA, USA ; Hernandez, D. ; Horowitz, R. ; Packard, Andrew K.
more authors

This paper examines a dual-stage actuation scheme for magnetic hard disk-drives. The secondary actuator in this dual-stage design is a microfabricated, electrostatic actuator which has been used to position a disk-drive slider over a 2.5 kHz closed-loop bandwidth. Actuation tests were performed using laser-Doppler vibrometer measurements of slider displacement, and both phase-lead and proportional-derivative controllers were implemented. The experimental results verify that the device has excellent linearity, suggesting that the dual-stage control system may use an observer to estimate the actuator displacement, resulting in significantly reduced implementation complexity. To this end, a SIMO dual-stage control system which uses only position error signal (PES) measurements is presented, and compared to a MIMO control system which utilizes both the PES and measurements of the micro-actuator displacement

Published in:

American Control Conference, 1998. Proceedings of the 1998  (Volume:5 )

Date of Conference:

21-26 Jun 1998