Comparative study of electrostatic analysis for disk drive microactuator

Author

Jia, W.H. ; Chai, J. ; Yang, J.P. ; Jabbar, M.A. ; Chen, S.X.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

fYear

2002

fDate

27-29 Aug. 2002

Abstract

Investigation of the driving capability of a microactuator used in hard disk drives (HDD) is essential to ensure that the head is moved to the desired track under a certain voltage. This paper presents three different approaches to calculate the driving torque in a rotary electrostatic microactuator, namely analytical methods, the finite element method (FEM) and the boundary element method (BEM). The torque is roughly calculated using the simplified analytical model first, and then the results are compared with those obtained from FEM and BEM software. This study shows that the simplified analytical model is feasible in the preliminary design stage.

Keywords

boundary-elements methods; disc drives; electrostatic actuators; finite element analysis; hard discs; magnetic heads; torque; BEM; FEM; HDD; analytical model; boundary element method; disk drive microactuator; driving capability; driving torque; electrostatic analysis; finite element method; head movement; head voltage; rotary electrostatic microactuator; Analytical models; Disk drives; Electrostatic analysis; Hard disks; Microactuators; Rotors; Servomechanisms; Stators; Torque; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetic Recording Conference, 2002. Digest of the Asia-Pacific

Conference_Location

Singapore

Print_ISBN

0-7803-7509-2

Type

conf

DOI

10.1109/APMRC.2002.1037697

Filename

1037697