By Topic

Comparison of suspension-based and slider-based microactuators for track following performance

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
$33 $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

3 Author(s)
M. Karaman ; Seagate Technol. LLC, Scotts Valley, CA, USA ; Y. Lu ; M. Bedillion

Recent increases in the hard disk drive track density have placed stringent requirements on the control of the head position relative to the track center during reading and writing, which is also referred to as track following. In industry and academia several different microactuators have been proposed and used to increase the track following capacity of hard disk drives. This work compares suspension-based and slider-based microactuators for track following performance. In particular, a large stroke linear MEMS actuator, a suspension-based PZT actuator and a collocated PZT transducer actuator are compared. Dynamic models of the microactuators have been derived based on data presented in the literature. An open-loop disturbance spectrum is generated for a suspension-based microactuated suspension on a high performance test spinstand. Open-loop disturbance spectra for the slider-based linear MEMS microactuator and collocated transducer PZT microactuator are developed using the open-loop disturbance spectrum of the suspension based microactuator in conjunction with the dynamic model of each microactuator. Closed-loop track following controllers are designed for each case and closed-loop projections are carried out. Pros and cons of each microactuator are discussed from disturbance spectrum and controller design points of view.

Published in:

Advanced Motion Control, 2004. AMC '04. The 8th IEEE International Workshop on

Date of Conference:

25-28 March 2004