Development of a single coil coupled force VCM actuator for high TPI magnetic recording

Author

Lin, H. ; Li, Q.H. ; He, Z.M. ; Chen, S.X.

Author_Institution

Data Storage Inst., Singapore

fYear

2000

fDate

6-8 Nov. 2000

Abstract

A novel high bandwidth actuator assembly is developed for the applications of high TPI recording in hard disk drives. The novel design in VCM construction, with flat moving-coil, is as simple as a conventional one. The VCM generates orthogonal force or pure torque. A 3D FEA is conducted in the electromagnetic design to optimize some critical electromagnetic parameters and the main dimensions. A 3D FEA is also carried out to predict the dynamic performance. The study shows that the quasi-rigid body vibration mode has been substantially suppressed. Measurement of the characteristics of a prototype is carried out and the result is discussed.

Keywords

actuators; coils; disc drives; finite element analysis; hard discs; magnetic recording; vibrations; 3D finite element analysis; bandwidth; coupled force actuator; dynamic analysis; electromagnetic design; hard disk drive; high density magnetic recording; moving coil VCM; quasi-rigid body vibration mode; Actuators; Assembly; Bandwidth; Coils; Design optimization; Disk recording; Electromagnetic forces; Electromagnetic measurements; Hard disks; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000

Conference_Location

Tokyo, Japan

Print_ISBN

0-7803-6254-3

Type

conf

DOI

10.1109/APMRC.2000.898913

Filename

898913