Low Frequency Vibration Detection and Compensation in Hard Disk Drive

被引：8

作者：

Cao, Wen-Jun ^{[1
]}

Wang, JianYi ^{[1
]}

Ding, MingZhong ^{[1
]}

Bi, Qiang ^{[1
]}

Ooi, KianKeong ^{[1
]}

机构：

[1] Seagate Technol Int, Singapore 118249, Singapore

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 07期

关键词：

Disk drive servo; down sampling; linear vibration; multi-rate sampling; rotary vibration; servo control;

D O I：

10.1109/TMAG.2011.2139195

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：

The paper proposes a control scheme for detecting and compensating the low-frequency vibrations in hard disk drive systems. A vibration detector is proposed, utilizing the down-sampled position error signal (PES). Due to the performance limitation in loop shaping, attenuating low-frequency vibration is usually penalized by high frequency disturbance amplification. This paper proposes an adaptive scheme to intelligently adjust a vibration reduction factor, such that when vibration level is low, the servo loop maintains its normal operation mode, and little or no compensation is carried out. Experiments on hard disk drives on a vibration shaker validated the effectiveness of the proposed compensation scheme.

引用

页码：1964 / 1969

页数：6

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