On the improvement of tracking servo performance of HDD using accelerometer

Yeon Chul Song, Jun Jeong, Hyun Seok Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the track following problem of HDD, there are many disturbances such as windage, pivot friction, bias torque from flex cable, RRO, and noise. Especially, the windage is one of the major sources, and its magnitude increases drastically as the disk rotation speed increases. In this paper, a method to attenuate the influence of input torque disturbances is proposed by the use of an accelerometer. The disturbances are estimated from the accelerometer attached at the carriage of VCM actuator, and are feedbacked into the control input in order to attenuate its effect to PES in the multi-rate control framework. Experiment shows that the proposed method effectively decreases the influence of the windage in the low frequency range without increasing the control bandwidth.

Original languageEnglish
Title of host publicationAsia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages111-112
Number of pages2
ISBN (Electronic)0780387171, 9780780387171
DOIs
Publication statusPublished - 2004 Jan 1
Event2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of
Duration: 2004 Aug 162004 Aug 19

Publication series

NameAsia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004

Other

Other2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004
CountryKorea, Republic of
CitySeoul
Period04/8/1604/8/19

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Song, Y. C., Jeong, J., & Yang, H. S. (2004). On the improvement of tracking servo performance of HDD using accelerometer. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 (pp. 111-112). [1521976] (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMRC.2004.1521976