Title :
Electromagnetic design for hard disk drive spindle motors with fluid film lubricated bearings
Author :
Liu, Z.J. ; Bi, C. ; Zhang, Q.D. ; Jabbar, M.A. ; Low, T.S.
Author_Institution :
Magnetics Technol. Centre, Nat. Univ. of Singapore, Singapore
fDate :
9/1/1996 12:00:00 AM
Abstract :
This paper discusses the problems associated with the electromagnetic design of hard disk drive (HDD) spindle motor having fluid film bearings. It will highlight the effect of the unbalanced electromagnetic pull in the radial direction of FFB spindle which uses permanent magnet brushless DC motors with slotted stator core. An analytical approach is employed for predicting the magnetic field and motor performance. Results obtained from this approach are compared with finite element analysis
Keywords :
brushless DC motors; hard discs; lubrication; machine bearings; permanent magnet motors; electromagnetic design; fluid film lubricated bearings; hard disk drive; magnetic field; magnetic forces; permanent magnet brushless DC motor; slotted stator core; spindle motor; Brushless DC motors; DC motors; Finite element methods; Hard disks; Magnetic analysis; Magnetic fields; Magnetic films; Performance analysis; Permanent magnet motors; Stator cores;
Journal_Title :
Magnetics, IEEE Transactions on
