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IJAT Vol.3 No.3 pp. 277-285
doi: 10.20965/ijat.2009.p0277
(2009)

Review:

Head-Positioning Control of Hard Disk Drives Through the Integrated Design of Mechanical and Control Systems

Takenori Atsumi

Mechanical Engineering Research Laboratory, Research & Development Group, Hitachi, Ltd.
1 Kirihara, Fujisawa, Kanagawa 252-8588, Japan

Received:
January 15, 2009
Accepted:
April 28, 2009
Published:
May 5, 2009
Keywords:
hard disk drives, positioning control, motion control, robust control, mechanical resonance
Abstract

A Hard Disk Drive (HDD) is an inexpensive mass-production product, but the head-positioning control systems of HDDs require nanometer-scale positioning performance. Therefore, we have studied head-positioning control systems of HDD using designs which integrate mechanical and control systems to improve their control performance while curbing cost increases. In this paper, we introduce “disturbance suppression in high-frequency ranges through phase stable design for high-order mechanical resonances” and “high servo-bandwidth design through mode shape design of mechanical resonance” as examples of techniques that have been developed and are easily applied to products.

Cite this article as:
T. Atsumi, “Head-Positioning Control of Hard Disk Drives Through the Integrated Design of Mechanical and Control Systems,” Int. J. Automation Technol., Vol.3, No.3, pp. 277-285, 2009.
Data files:
References
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