Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/85376
Title: Feedback control of flow-induced vibrations on head gimbals assembly inside hard disk drives
Authors: Huang, X. Y.
Min, H.
Zhang, Q. D.
Keywords: DRNTU::Engineering::Mechanical engineering::Fluid mechanics
Issue Date: 2014
Source: Huang, X. Y., Min, H., & Zhang, Q. D. (2013). Feedback control of flow-induced vibrations on head gimbals assembly inside hard disk drives. Lecture Notes in Mechanical Engineering, Proceedings of the 2nd Symposium on Fluid-Structure-Sound Interactions and Control, pp.405-411.
Abstract: High speed flows in working hard disk drives (HDDs) can induce offtrack vibrations on a head gimbals assembly (HGA), which limit positioning accuracy of the slider magnetic head on the tip of the HGA for high magnetic storage density in disks. This paper presents experimental studies and numerical simulations on the flow-induced vibrations (FIV) of the HGA inside an HDD and active control of such vibrations. Firstly, the HGA off-track vibration and the airflow pressure fluctuations around the HGA are measured to characterize the FIV of the HGA. Secondly, we propose an active control strategy for such FIV of the HGA, in which feedback acoustic pressures are employed to suppress pressure fluctuations in turbulence around the HGA. Numerical simulations have been carried out on this issue by introducing virtual sensors into the close regions around the HGA. Finally, by using the FIV on the HGA as feedback error signals through the laser Doppler vibrometer, the feedback control of FIV on the HGA has also been demonstrated.
URI: https://hdl.handle.net/10356/85376
http://hdl.handle.net/10220/18632
DOI: 10.1007/978-3-642-40371-2_58
Rights: © 2014 Springer-Verlag Berlin Heidelberg. This is the author created version of a work that has been peer reviewed and accepted for publication by Proceedings of the 2nd Symposium on Fluid-Structure-Sound Interactions and Control, Springer-Verlag Berlin Heidelberg. 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: [http://dx.doi.org/10.1007/978-3-642-40371-2_58].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Conference Papers

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