Abstract
The ring magnet magnetization profiles in spindle motor were investigated theoretically by a computer-aided simulation with 2D modeling processes of finite element analysis. Under the three topologies of magnetizing fixture, the current was varied below 15 kA. The double-sided fixture shows a minimum cogging torque near 8 kA. However, the single-sided fixture internal to the magnet shows a maximum torque constant near 8 kA. Experimental data are in good agreement with theoretical calculation. A high efficiency and low cogging torque spindle motor has been achieved by optimum design of the magnetizing fixture to magnetize the ring magnet in a spindle motor.
| Original language | English |
|---|---|
| Pages (from-to) | 4904-4906 |
| Number of pages | 3 |
| Journal | Journal of Applied Physics |
| Volume | 85 |
| Issue number | 8 II A |
| DOIs | |
| State | Published - 15 Apr 1999 |
| Event | Proceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, USA Duration: 9 Nov 1998 → 12 Nov 1998 |
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Yao, Y. D., Huang, D-R., Huang, S. Z., Wang, S. J., & Ying, T. F. (1999). Study of optimum design on magnetizing fixtures for the ring magnet in spindle motors. Journal of Applied Physics, 85(8 II A), 4904-4906. https://doi.org/10.1063/1.369137