Title :
Design of a dual moving-magnet motor for a hard disk drive actuator
Author :
Chen, S.X. ; Wood, R. ; Mah, Y.
Author_Institution :
Data Storage Inst., Nat. Univ. of Singapore, Singapore
fDate :
9/1/1997 12:00:00 AM
Abstract :
This paper presents the design and the measured performance of a moving-magnet motor intended to drive a high bandwidth actuator assembly. The motor includes two magnets which are arranged to provide mainly torque rather than force. As a reference point, measurements are also made on a conventional moving coil actuator from a commercial 3.5" hard disk drive. The dual moving-magnet actuator is found to have better electromechanical characteristics and to be more power effective than the reference actuator
Keywords :
actuators; eddy currents; finite element analysis; hard discs; magnetic hysteresis; permanent magnet motors; torque; 3.5 inch; NdFeB; bias force; dual moving-magnet motor design; eddy currents; electromechanical characteristics; finite element method; hard disk drive actuator; high bandwidth actuator assembly; hysteresis; power effectiveness; sintered NdFeB magnets; torque; Actuators; Assembly; Bandwidth; Coils; Costs; Hard disks; Magnetic analysis; Magnetic materials; Magnets; Torque;
Journal_Title :
Magnetics, IEEE Transactions on
