Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration
This paper presents an experimental demonstration on the active control of flow-induced vibrations on a head gimbals assembly (HGA) bearing a slider in a hard disk drive (HDD). The feedback control closed-loop consisted of a laser Doppler vibrometer (LDV), a narrowband frequency filter, a signal con...
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sg-ntu-dr.10356-969462023-03-04T17:18:17Z Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration Min, Hequn Huang, Xiaoyang Zhang, Qide School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering This paper presents an experimental demonstration on the active control of flow-induced vibrations on a head gimbals assembly (HGA) bearing a slider in a hard disk drive (HDD). The feedback control closed-loop consisted of a laser Doppler vibrometer (LDV), a narrowband frequency filter, a signal conditioner, an in-house made phase shifter, and a piezoelectric disk mounted on the inner surface of the HDD cover. The HGA vibrations detected by the LDV were used as feedback error signals, and the signals were then phase shifted and amplified to drive the piezoelectric disk to generate feedback acoustic pressure around the HGA. The phase shift and gain of the feedback loop were adjusted such that the HGA vibrations were reduced. The experiments of active control have been conducted on five principal peaks in the HGA off-plate vibration spectrum, around 1256, 1428, 2141, 2519, and 3469 Hz, respectively. The results show that reduction of the HGA vibrations can be achieved on all these principal peaks, with a maximum suppression of 16 dB on the peak around 1428 Hz. It is also observed that simultaneous reduction can take place among these peaks when the narrowband feedback control is focused only on one of them. Accepted version 2013-06-11T08:06:17Z 2019-12-06T19:37:01Z 2013-06-11T08:06:17Z 2019-12-06T19:37:01Z 2013 2013 Journal Article Min, H., Huang, X., & Zhang, Q. (2013). Active control of flow-induced vibrations on slider in hard disk drives: experimental demonstration. IEEE Transactions on Magnetics, 49(6), 3038-3041. 0018-9464 https://hdl.handle.net/10356/96946 http://hdl.handle.net/10220/10204 10.1109/TMAG.2013.2239653 168618 en IEEE transactions on magnetics © 2013 IEEE. This is the author created version of a work that has been peer reviewed and accepted for publication by IEEE Transactions on Magnetics, IEEE. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at DOI: [http://dx.doi.org/10.1109/TMAG.2013.2239653]. application/pdf |
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DRNTU::Engineering::Mechanical engineering Min, Hequn Huang, Xiaoyang Zhang, Qide Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
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This paper presents an experimental demonstration on the active control of flow-induced vibrations on a head gimbals assembly (HGA) bearing a slider in a hard disk drive (HDD). The feedback control closed-loop consisted of a laser Doppler vibrometer (LDV), a narrowband frequency filter, a signal conditioner, an in-house made phase shifter, and a piezoelectric disk mounted on the inner surface of the HDD cover. The HGA vibrations detected by the LDV were used as feedback error signals, and the signals were then phase shifted and amplified to drive the piezoelectric disk to generate feedback acoustic pressure around the HGA. The phase shift and gain of the feedback loop were adjusted such that the HGA vibrations were reduced. The experiments of active control have been conducted on five principal peaks in the HGA off-plate vibration spectrum, around 1256, 1428, 2141, 2519, and 3469 Hz, respectively. The results show that reduction of the HGA vibrations can be achieved on all these principal peaks, with a maximum suppression of 16 dB on the peak around 1428 Hz. It is also observed that simultaneous reduction can take place among these peaks when the narrowband feedback control is focused only on one of them. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Min, Hequn Huang, Xiaoyang Zhang, Qide |
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Article |
author |
Min, Hequn Huang, Xiaoyang Zhang, Qide |
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Min, Hequn |
title |
Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
title_short |
Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
title_full |
Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
title_fullStr |
Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
title_full_unstemmed |
Active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
title_sort |
active control of flow-induced vibrations on slider in hard disk drives : experimental demonstration |
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2013 |
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https://hdl.handle.net/10356/96946 http://hdl.handle.net/10220/10204 |
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