Effect of additional harmonics of driving current on torque ripple and unbalanced magnetic force in HDD spindle motors with stator and rotor eccentricity

被引：1

作者：

Sung, Sangjin ^{[1
]}

Jang, Gunhee ^{[1
]}

Kang, Kyungjin ^{[1
]}

Song, Jeongyong ^{[1
]}

机构：

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

来源：

MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS | 2015年 / 21卷 / 12期

关键词：

BRUSHLESS DC MOTORS; INDUCED VIBRATION; NOISE;

D O I：

10.1007/s00542-015-2522-7

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：

This paper mathematically investigates the characteristics of torque ripple and unbalanced magnetic force (UMF) caused by additional harmonics of the driving current in hard disk drive (HDD) spindle motors with stator and rotor eccentricities. It shows that additional harmonics of the driving current, stator eccentricity, and rotor eccentricity independently affect torque ripple. It also shows that UMF is not generated in an ideal HDD spindle motor even when the driving current has additional harmonics. However, additional harmonics of the driving current generate additional harmonics of UMF in an HDD spindle motor with stator or rotor eccentricities. The characteristics of torque ripple and UMF caused by additional harmonics of the driving current were indirectly verified by measuring the acoustic noise and vibration of an HDD spindle motor with stator and rotor eccentricities.

引用

页码：2669 / 2678

页数：10

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