By Topic

Real-time method to measure head disk spacing variation under vibration conditions

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

5 Author(s)
Li, A. ; Centre for Res. in Inf. Storage Technol., Univ. of Plymouth, UK ; Xinqun Liu ; Clegg, W. ; Jenkins, D.F.L.
more authors

Three readback signal detection methods are presented for real-time head disk spacing variation measurement under vibration conditions. The proposed PW50 parameter estimation method is not restricted by the isolated readback pulse signal requirement and, thus, can be used for spacing variation measurement in normally operated hard disk drives, especially for low-frequency variations. The thermal signal detection method, on the other side, is more effective for high-frequency spacing variation measurement. Amplitude detection gives a rough but simple way to study the head disk spacing change. Theoretical analysis and experimental results are given to illustrate the effectiveness of the methods.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:52 ,  Issue: 3 )