Development of an HDD spindle motor with increased stiffness and damping coefficients by utilizing a stationary permanent magnet

被引：5

作者：

Jang, G. H. ^{[1
]}

Lee, C. I. ^{[1
]}

机构：

[1] Hanyang Univ, Dept Mech Engn, Seoul 133791, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2007年 / 43卷 / 06期

关键词：

fluid dynamic bearings (FDBs); hard disk drive (HDD); nonrepeatable runout (NRRO); spindle motor;

D O I：

10.1109/TMAG.2007.892862

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：

This research proposes a novel design of a hard-disk-drive spindle motor with increased stiffness and damping coefficients. It has the permanent magnet in the sleeve, which generates the stationary attractive magnetic force. It results in the static eccentricity of the rotating spindle, which increases the stiffness and damping effect of fluid dynamic bearings. The performance of the proposed design is verified by the experiment, as well as by the numerical simulation. The experiment shows that the proposed design decreases the nonrepeatable vibration by 10% when the eccentricity increases by 0.2 mu m in the given motor.

引用

页码：2570 / 2572

页数：3