Title :
Torque and cogging torque in sandwich type CD-ROM spindle motor
Author :
Chao, C.M. ; Wang, S.J. ; Liao, C.P. ; Huang, D.R. ; Ying, T.F.
Author_Institution :
Opto-Electron. & Syst. Labs., ITRI, Taiwan
fDate :
3/1/1998 12:00:00 AM
Abstract :
The sandwich type CD-ROM spindle motor has intrinsic dominance of manufacture and cost. This paper will propose a reference formula of torque constant Kt according to the experimental results, accounting for the mechanism of dead point, and finally introducing a design method to prevent dead point and to reduce the cogging torque
Keywords :
CD-ROMs; permanent magnet motors; small electric machines; torque; cogging torque; dead point; design; sandwich type CD-ROM spindle motor; torque constant; Brushless motors; CD-ROMs; Coils; Costs; Forging; Lamination; Magnetic flux; Manufacturing; Stators; Torque;
Journal_Title :
Magnetics, IEEE Transactions on
