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Content Provider | IEEE Xplore Digital Library |
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Author | Oldham, K. Felix, S. Conway, R. Horowitz, R. |
Copyright Year | 2008 |
Description | Author affiliation: Dept. of Mech. Eng., Univ. of Michigan, Ann Arbor, MI (Oldham, K.; Felix, S.) |
Abstract | Dual-stage servo systems have been proposed as a method for attaining increased bit densities from computer hard disk drives. To aid in controller operation, the second-stage microactuator used in a dual-stage system should operate at low voltages, feature relative position sensing, and have dynamics that interact well with the dynamics of the original drive servo. This paper describes a high-aspect ratio electrostatic microactuator modified to improve dynamic interactions, relative position sensor performance, and device yield. A multi-rate, multivariable control design technique was used to evaluate the closed- loop performance of a disk drive system with a microactuator and relative position sensing. Closed-loop simulations reveal that the proposed configuration can reduce off-track position error. Addressing both hardware design and control design, this paper demonstrates the success of an integrated mechatronic approach to hard disk drive servo control. |
Starting Page | 4400 |
Ending Page | 4406 |
File Size | 609968 |
Page Count | 7 |
File Format | |
ISBN | 9781424420780 |
ISSN | 07431619 |
DOI | 10.1109/ACC.2008.4587187 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-06-11 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | American Automatic Control Council(AACC) |
Subject Keyword | Control systems Disk drives Servomechanisms Electrostatics Microactuators Hard disks Control design Voltage control Low voltage Sensor phenomena and characterization |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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