Title :
Identity control for spindle motors in hard-disk drives
Author :
Low, T.S. ; Soh, C.S. ; Bi, C. ; Chang, K.T.
Author_Institution :
Magnetics Technol. Centre, Nat. Univ. of Singapore, Singapore
fDate :
11/1/1995 12:00:00 AM
Abstract :
A novel control technique for hard-disk spindle motors is presented that improves the efficiency of the motor drive system. A spindle motor is first characterized by its `identity´, which is the per-phase torque profile, and then the identity is used to generate an optimal drive current or voltage for driving the spindle. The harmonic content in the drive current is significantly reduced
Keywords :
hard discs; machine control; motor drives; small electric machines; torque; hard-disk drives; harmonic content; identity control; motor drive; per-phase torque profile; spindle motors; Bismuth; Brushless DC motors; DC motors; Hard disks; Induction motors; Optimal control; Synchronous motors; Torque control; Torque measurement; Voltage control;
Journal_Title :
Magnetics, IEEE Transactions on
