By Topic

Back-EMF ZCP Error Induced by Electromagnetic Structure of Spindle Motor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Bi, C. ; Data Storage Inst., A*Star, Singapore, Singapore ; Hla, N.P. ; Jiang, Q. ; Soh, C.S.

In a hard disk drive (HDD), the zero crossing points (ZCPs) of back-EMF generated in the spindle motor armature windings are used as rotor position signal for realizing precision motor speed control. The error of ZCP is a major concern, especially for HDDs with ultrahigh data recording densities. In the paper, several causes that induce the ZCP error are analyzed, and these problems are induced during the motor design and production. Both the analytical and numerical methods are used in the analysis to study the influence of the electromagnetic structure on the ZCP. Solutions are then proposed to reduce the errors of the ZCP during the motor design phase.

Published in:

Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 7 )