Title :
Design of fluid bearing spindle motors with controlled unbalanced magnetic forces
Author :
Chen, S.X. ; Zhang, Q.D. ; Liu, Z.J. ; Lin, H.
Author_Institution :
Data Storage Inst., Nat. Univ. of Singapore, Singapore
fDate :
9/1/1997 12:00:00 AM
Abstract :
This paper discusses the beneficial and detrimental effects of unbalanced magnetic forces developed in a fluid bearing spindle motor used for hard disk drives. The analysis made in this paper shows that unbalanced forces can be useful for magnetic preloading and stabilizing the fluid bearing system of a hard disk drive spindle motor
Keywords :
electric motors; hard discs; machine bearings; small electric machines; fluid bearing; hard disk drive; magnetic force; spindle motor; Fluctuations; Force control; Forging; Frequency; Hard disks; Magnetic analysis; Magnetic forces; Magnetic levitation; Magnetic liquids; Solids; Stators; Torque;
Journal_Title :
Magnetics, IEEE Transactions on
