On the improvement of tracking servo performance of HDD using accelerometer

Yeon Chul Song; Jun Jeong; Hyun Seok Yang

doi:10.1109/APMRC.2004.1521976

On the improvement of tracking servo performance of HDD using accelerometer

Yeon Chul Song, Jun Jeong, Hyun Seok Yang

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	111-112
Number of pages	2
ISBN (Electronic)	0780387171, 9780780387171
DOIs	https://doi.org/10.1109/APMRC.2004.1521976
Publication status	Published - 2004
Event	2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of Duration: 2004 Aug 16 → 2004 Aug 19

Publication series

Name	Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004

Other

Other	2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004
Country/Territory	Korea, Republic of
City	Seoul
Period	04/8/16 → 04/8/19

Bibliographical note

Publisher Copyright:
© 2004 IEEE.

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/APMRC.2004.1521976

Cite this

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). Article 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

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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.",

author = "Song, {Yeon Chul} and Jun Jeong and Yang, {Hyun Seok}",

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year = "2004",

doi = "10.1109/APMRC.2004.1521976",

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Song, YC, Jeong, J & Yang, HS 2004, On the improvement of tracking servo performance of HDD using accelerometer. in Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004., 1521976, Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004, Institute of Electrical and Electronics Engineers Inc., pp. 111-112, 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004, Seoul, Korea, Republic of, 04/8/16. https://doi.org/10.1109/APMRC.2004.1521976

On the improvement of tracking servo performance of HDD using accelerometer. / Song, Yeon Chul; Jeong, Jun; Yang, Hyun Seok.
Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. p. 111-112 1521976 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - 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.

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On the improvement of tracking servo performance of HDD using accelerometer

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