Title :
Torque Area Method and Its Application in Analysis of HDD Spindle Motors With Sinusoidal Magnetization
Author :
Feng, Ming ; Niu, K.
Author_Institution :
Department of Mechatronic Engineering,, School of Mechanical Engineering, University of Science and Technology Beijing,, Beijing, China
Abstract :
Based on the Stieltjes integral, this paper investigates the characteristics of the torque area of surface permanent magnet motors with sinusoidal magnetization used in hard disk drives. Then, a simple torque calculation algorithm is proposed and verified through comparison with the finite element analysis. Meanwhile, an improved motor having the sintered NdFeB with sinusoidal magnetization and smaller airgap length is recommended.
Keywords :
Hard disk drive (HDD) spindle motors; Stieltjes integral; oblique ellipse; sinusoidal magnetization; torque area;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2247986
