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Proceedings Paper

Two-degree-of-freedom control of a self-sensing micro-actuator for HDD
Author(s): Minoru Sasaki; Koji Fujihara; Yoonsu Nam; Satoshi Ito
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Paper Abstract

The present paper describes a two-degree-of-freedom control of a self-sensing micro-actuator for a dual-stage hard disk drive. The two-degree-of-freedom control system is comprised of a feedforward controller and a feedback controller. Two controllers are designed for the two-degree-of-freedom control system, one for the inverse dynamic model for the feedforward controller and one for the feedback controller using self-sensing signal. The feedback controller can realize the self-sensing signal. The micro-actuator uses a PZT actuator pair, installed on the assembly of the suspension. The self-sensing micro-actuator can be used to form a combined actuation and sensing mechanism. Experimental results show that the two-degree-of-freedom control approach can be used effectively for the control of the self-sensing microactuator system.

Paper Details

Date Published: 9 January 2008
PDF: 6 pages
Proc. SPIE 6794, ICMIT 2007: Mechatronics, MEMS, and Smart Materials, 679436 (9 January 2008); doi: 10.1117/12.783779
Show Author Affiliations
Minoru Sasaki, Gifu Univ. (Japan)
Koji Fujihara, Gifu Univ. (Japan)
Yoonsu Nam, Kangwon National Univ. (South Korea)
Satoshi Ito, Gifu Univ. (Japan)

Published in SPIE Proceedings Vol. 6794:
ICMIT 2007: Mechatronics, MEMS, and Smart Materials

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