Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics

Kyoung Su Park; Jeong Il Chun; Yong Hyun Lee; No Cheol Park; Hyun Seok Yang; Young Pil Park

doi:10.1109/APMRC.2004.1521930

Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics

Kyoung Su Park, Jeong Il Chun, Yong Hyun Lee, No Cheol Park, Hyun Seok Yang, Young Pil Park

Department of Mechanical Engineering

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

Abstract

Load/unload dynamic characteristics are affected by various parameters; load/unload speed, disk rotating speed, disk vibration and so on. The effect of load/unload process on various parameters was investigated by the experiment. As a result of experiment, the load performance was found to be better for lower load speed and disk rpm. On the other hand, it was confirmed to be better for lower unload speed and higher disk rpm in unload process. Also, the effect of disk vibration was studied for load/unload process. The amplitude of disk vibration can affect in a relative ramp-disk gap and the disk vertical velocity affects in a relative slider-disk speed during load/unload process. As the results of 1000 unload cycles, the non-contact region was changed as the function of disk rotating speed. The non-contact region was smaller in a lower disk rpm. This paper proposes a new control system in order to improve the load/unload performance.

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	2-3
Number of pages	2
ISBN (Electronic)	0780387171, 9780780387171
DOIs	https://doi.org/10.1109/APMRC.2004.1521930
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.2004.1521930

Cite this

Park, K. S., Chun, J. I., Lee, Y. H., Park, N. C., Yang, H. S., & Park, Y. P. (2004). Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 (pp. 2-3). [1521930] (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMRC.2004.1521930

Park, Kyoung Su ; Chun, Jeong Il ; Lee, Yong Hyun et al. / Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics. Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. pp. 2-3 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).

@inproceedings{e2f2dc6689fe4c0d8448d410934db22d,

title = "Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics",

abstract = "Load/unload dynamic characteristics are affected by various parameters; load/unload speed, disk rotating speed, disk vibration and so on. The effect of load/unload process on various parameters was investigated by the experiment. As a result of experiment, the load performance was found to be better for lower load speed and disk rpm. On the other hand, it was confirmed to be better for lower unload speed and higher disk rpm in unload process. Also, the effect of disk vibration was studied for load/unload process. The amplitude of disk vibration can affect in a relative ramp-disk gap and the disk vertical velocity affects in a relative slider-disk speed during load/unload process. As the results of 1000 unload cycles, the non-contact region was changed as the function of disk rotating speed. The non-contact region was smaller in a lower disk rpm. This paper proposes a new control system in order to improve the load/unload performance.",

author = "Park, {Kyoung Su} and Chun, {Jeong Il} and Lee, {Yong Hyun} and Park, {No Cheol} and Yang, {Hyun Seok} and Park, {Young Pil}",

note = "Publisher Copyright: {\textcopyright} 2004 IEEE.; 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 ; Conference date: 16-08-2004 Through 19-08-2004",

year = "2004",

doi = "10.1109/APMRC.2004.1521930",

language = "English",

series = "Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Park, KS, Chun, JI, Lee, YH, Park, NC , Yang, HS & Park, YP 2004, Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics. in Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004., 1521930, Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004, Institute of Electrical and Electronics Engineers Inc., pp. 2-3, 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004, Seoul, Korea, Republic of, 04/8/16. https://doi.org/10.1109/APMRC.2004.1521930

Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics. / Park, Kyoung Su; Chun, Jeong Il; Lee, Yong Hyun et al.
Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. p. 2-3 1521930 (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 - Load/unload dynamic characteristics are affected by various parameters; load/unload speed, disk rotating speed, disk vibration and so on. The effect of load/unload process on various parameters was investigated by the experiment. As a result of experiment, the load performance was found to be better for lower load speed and disk rpm. On the other hand, it was confirmed to be better for lower unload speed and higher disk rpm in unload process. Also, the effect of disk vibration was studied for load/unload process. The amplitude of disk vibration can affect in a relative ramp-disk gap and the disk vertical velocity affects in a relative slider-disk speed during load/unload process. As the results of 1000 unload cycles, the non-contact region was changed as the function of disk rotating speed. The non-contact region was smaller in a lower disk rpm. This paper proposes a new control system in order to improve the load/unload performance.

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Park KS, Chun JI, Lee YH, Park NC , Yang HS, Park YP. Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc. 2004. p. 2-3. 1521930. (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). doi: 10.1109/APMRC.2004.1521930

Improvement of L/UL performance using load/unload mechanism control considering disk vibration characteristics

Abstract

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