Development of a highly efficient hard disk drive spindle motor with a passive magnetic thrust bearing and a hydrodynamic journal bearing

G. H. Jang; J. S. Park

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Development of a highly efficient hard disk drive spindle motor with a passive magnetic thrust bearing and a hydrodynamic journal bearing

机译：具有被动磁推力轴承和液力动压轴承的高效硬盘驱动主轴电机的开发

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This article presents a highly efficient hard disk drive (HDD) spindle motor with a passive magnetic thrust bearing and a hydrodynamic journal bearing. It eliminates the mechanical friction loss of a thrust bearing which is around 14% of total power consumption of a 3.5 in. HDD spindle motor, by replacing a conventional hydrodynamic thrust bearing with a passive magnetic thrust bearing. The passive magnetic thrust bearing using permanent magnets is inherently unstable in radial direction. However, the radial hydrodynamic force of the hydrodynamic journal bearing counterbalances the radial magnetic force of magnetic thrust bearing to achieve the stability as the motor spins up. Numerical analysis is performed to verify feasibility of the proposed system.

机译：本文介绍了一种高效的硬盘驱动器（HDD）主轴电机，带有被动磁推力轴承和液力动压轴承。通过用被动磁推力轴承代替传统的流体推力轴承，可以消除推力轴承的机械摩擦损耗，该损耗约为3.5英寸HDD主轴电机总功耗的14％。使用永磁体的被动磁推力轴承在径向上固有地不稳定。然而，流体动力轴颈轴承的径向流体动力平衡了磁力推力轴承的径向磁力，从而在电动机旋转时实现了稳定性。进行数值分析以验证所提出系统的可行性。

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来源
《Journal of Applied Physics》 |2005年第10pt3期|p.10Q507.1-10Q507.3|共3页
作者
G. H. Jang; J. S. Park;
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作者单位

PREM, Department of Precision Mechanical Engineering, Hanyang University, Seoul 133-791, Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类应用物理学;
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专利

1. Effects of thrust hydrodynamic bearing stiffness and damping on disk-spindle axial vibration in hard disk drives [J] . T. Jintanawan, C. -P. Roger Ku, J. Zhu Microsystem technologies . 2004,第4期

机译：推力流体动压轴承刚度和阻尼对硬盘驱动器中磁盘主轴轴向振动的影响
2. Dynamic characteristics of hard disk drive spindle motors -- comparison between ball bearings and hydrodynamic bearings [J] . C. -P. Roger Ku Journal of Tribology . 1996,第2期

机译：硬盘驱动器主轴电机的动态特性-滚珠轴承和液力轴承之间的比较
3. Optimum Design of Oil Lubricated Thrust Bearing for Hard Disk Drive with High Speed Spindle Motor [J] . Yuta Sunami, Mohd Danial Ibrahim, Hiromu Hashimoto International Journal of Rotating Machinery . 2013,第Null期

机译：高速主轴电机硬盘驱动器油润滑推力轴承的优化设计
4. Low cost active magnetic bearings for hard disk drive spindle motors [C] . R. Vuillemin, B. Aeschlimann, M. Kuemmerle, International symposium on magnetic bearings . 1998

机译：用于硬盘主轴电机的低成本有源电磁轴承
5. Vibration of rotating disk-spindle systems with hydrodynamic bearings. [D] . Jintanawan, Thitima. 2000

机译：带有动压轴承的转盘主轴系统的振动。
6. Numerical Investigation of Pressure Profile in Hydrodynamic Lubrication Thrust Bearing [O] . Farooq Ahmad Najar, G. A. Harmain 2014

机译：流体动力润滑推力轴承压力分布的数值研究
7. A Comparison Study on Performances of Four Types of Oil Lubricated Hydrodynamic Thrust Bearings for Hard Disk Drive Spindles. [O] . Jiasheng ZHU, Kyosuke ONO 1998

机译：硬盘驱动锭四种油润滑水动力推力轴承性能的比较研究。

Development of a highly efficient hard disk drive spindle motor with a passive magnetic thrust bearing and a hydrodynamic journal bearing

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