Title :
A high-bandwidth moving-magnet actuator for hard disk drives
Author :
Chen, S.X. ; Li, Q. ; Mah, Y. ; Mannan, M. ; Ong, E. ; Zheng, H. ; Weerasooriya, S. ; Wood, R.
Author_Institution :
Data Storage Inst., Nat. Univ. of Singapore, Singapore
fDate :
9/1/1997 12:00:00 AM
Abstract :
This paper describes an experimental moving-magnet actuator (HBX) designed far a 3.5", 2-disk, hard drive. The specific design objective is to increase the small-signal bandwidth of the actuator without sacrificing good seek performance. The proposed actuator comprises a stiffened arm structure and an orthogonal drive, moving-magnet motor. The magnetics and mechanics of the motor are studied through finite element analysis (FEA). A prototype actuator is built and tested using static forces and modal analysis. These results agree with the FEA results and provide valuable insight into the design of moving magnet motors
Keywords :
actuators; finite element analysis; hard discs; 3.5 in; HBX; finite element analysis; hard disk drive; moving-magnet actuator; small-signal bandwidth; Actuators; Arm; Bandwidth; Coils; Finite element methods; Frequency; Hard disks; Magnetic analysis; Magnetic field measurement; Magnetic resonance; Modal analysis; Prototypes; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
