Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888408
