Effects of the Fluid Dynamic Bearing Design on Rotational Precision of a Spindle Motor

Author

Liu, Chien-Sheng ; Chuo, Ying-Chi ; Lin, Po-Heng ; Tsai, Meng-Che ; Chang, Yu-Hsiu ; Horng, Ji-Bin

Author_Institution

Laser Application Technol. Center, Ind. Technol. Res. Inst., Tainan County

Volume

43

Issue

2

fYear

2007

Firstpage

790

Lastpage

792

Abstract

This paper presents the effects of the fluid dynamic bearing (FDB) design on the rotational precision of a spindle motor used for drivers requiring higher recording density and data transfer rate. Adopting the numerical flow field analysis on the FDB, the developed motor has robust operating stability in an operational window. The FDB provides the optimal load capacity demonstrated by the experimental results. In addition, the developed motor has excellent axial repeatable run-out performance less than 4 mum

Keywords

design engineering; electric motors; flow simulation; machine bearings; numerical analysis; stability; fluid dynamic bearing; numerical low field analysis; optimal load capacity; rotational precision; spindle motor; Electromagnetic measurements; Fluid dynamics; Laser applications; Optical design; Optical devices; Permanent magnet motors; Rail to rail outputs; Robust stability; Stability analysis; Torque; Fluid dynamic bearing (FDB); motors; simulation; storage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.888408

Filename

4069047