Title :
Drag Torque Measurement of Hard Disk Drive Spindle Motors
Author :
Jiang, Q. ; Bi, C. ; Lin, S.
Author_Institution :
A*Star Data Storage Inst.
fDate :
Nov. 29 2006-Dec. 1 2006
Abstract :
The drag torque of a hard disk drive (HDD) is a key variable to its spindle motor. It should be accurately tested during R&D and mass productions of HDDs. This paper reviews its existing measurement methods currently used by HDD industry first. Then an effective method to measure the drag torque is introduced. Through the proposed method, the drag torque can be measured more precisely and easily
Keywords :
brushless DC motors; disc drives; hard discs; machine testing; small electric machines; torque measurement; HDD industry; drag torque measurement; hard disk drive; mass production; spindle motors; Bismuth; Copper; Core loss; Drag; Hard disks; Memory; Power generation; Rotation measurement; Testing; Torque measurement; Drag torque; hard disk drives; spindle motors; torque measurement;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2006
Conference_Location :
Singapore
Print_ISBN :
1-4244-0863-6
DOI :
10.1109/APMRC.2006.365918
