Title :
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
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;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000
Conference_Location :
Tokyo, Japan
Print_ISBN :
0-7803-6254-3
DOI :
10.1109/APMRC.2000.898913
