Vibration control of a PZT actuated suspension dual-stage servo system using a PZT sensor

被引：69
|
作者：
Li, YF [1 ]
Horowitz, R
Evans, R
机构：
[1] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA
[2] Hutchinson Technol Inc, Hutchinson, MN 55350 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 02期
关键词：
dual-stage servo; hard disk drive; vibration damping control; windage;
D O I：
10.1109/TMAG.2003.808952
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：
Structural resonance modes of the head stack and suspension assembly are one of the major limiting factors for achieving higher head-positioning servo performance in hard disk drives. This paper discusses the vibration suppression control of a PZT actuated suspension dual-stage servo system. A PZT strip on a PZT actuated suspension is utilized as a vibration sensor to control both the voice coil motor (VCM) actuator butterfly mode and the suspension,sway mode. The vibration suppression controller is designed using the H-infinity control, design method.. Experimental results. show that an attenuation of 15 dB can be achieved for both the suspension sway mode and the VCM butterfly mode, and the rms of the head off-track motion due to airflow excited. vibration can be reduced by approximately 30% with the. proposed vibration suppression control scheme.
引用
收藏
页码：932 / 937
页数：6
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