Head-positioning control system using thermal actuator in hard disk drives

被引：2
|
作者：
Odai, Masaki [1 ]
Atsumi, Takenori [2 ]
Otsuki, Haruaki [1 ]
Arisaka, Toshihiro [1 ]
机构：
[1] Hitachi Ltd, Hitachi Res Lab, Hitachinaka, Ibaraki, Japan
[2] HGST Japan Ltd, Japan Res Lab, Fujisawa, Kanagawa, Japan
来源：
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS | 2013年 / 19卷 / 9-10期
关键词：
Frequency Response; Feedback Controller; Actuator System; Sensitivity Function; Hard Disk Drive;
D O I：
10.1007/s00542-013-1843-7
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a head-positioning control system with a thermal actuator in hard disk drives (HDDs). The frequency response of the thermal actuator showed that the thermal actuator system has no mechanical resonant mode. Therefore, this head-positioning system with a thermal actuator can control the head-position beyond the major mechanical resonances caused by a voice coil motor (VCM) or suspensions. In this study, the system was a dual-stage actuator system; the first actuator was a VCM, and the second was a thermal actuator. Simulation results for a track-following control in an HDD demonstrated the validity of the proposed method.
引用
收藏
页码：1483 / 1494
页数：12
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