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 |
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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 |