Adaptive Loop Shaping for Wideband Disturbances Attenuation in Precision Information Storage Systems

Adaptive Loop Shaping for Wideband Disturbances Attenuation in Precision Information Storage Systems. Sun, L., Jiang, T., & Chen, X. IEEE Transactions on Magnetics, 53(5):1-13, May, 2017.

Paper doi abstract bibtex

Modern hard disk drive (HDD) systems are subjected to various external disturbances. One particular category, defined as wide-band disturbances, can generate vibrations with their energy highly concentrated at several frequency bands. Such vibrations are commonly time-varying and strongly environment/product-dependent; and the wide spectral peaks can occur at frequencies above the servo bandwidth. This paper considers the attenuation of such challenging vibrations in the track-following problem of HDDs. Due to the fundamental limitation imposed by the Bode's Integral Theorem, the attenuation of such wide-band disturbances may cause unacceptable amplifications at other frequencies. To achieve a good performance and an optimal tradeoff, an add-on adaptive vibration-compensation scheme is proposed in this paper. Through parameter adaptation algorithms that online identify both the center frequencies and the widths of the spectral peaks, the proposed control scheme automatically allocates the control efforts with respect to (w.r.t) the real-time disturbance characteristics. The effect is that the position error signal (PES) in HDDs can be minimized with effective vibration cancellation. Evaluation of the proposed algorithm is performed by experiments on a Voice-Coil-Driven Flexible Positioner (VCFP) system.

@article{Sun2016,
	Abstract = {Modern hard disk drive (HDD) systems are subjected to various external disturbances. One particular category, defined as wide-band disturbances, can generate vibrations with their energy highly concentrated at several frequency bands. Such vibrations are commonly time-varying and strongly environment/product-dependent; and the wide spectral peaks can occur at frequencies above the servo bandwidth. This paper considers the attenuation of such challenging vibrations in the track-following problem of HDDs. Due to the fundamental limitation imposed by the Bode's Integral Theorem, the attenuation of such wide-band disturbances may cause unacceptable amplifications at other frequencies. To achieve a good performance and an optimal tradeoff, an add-on adaptive vibration-compensation scheme is proposed in this paper. Through parameter adaptation algorithms that online identify both the center frequencies and the widths of the spectral peaks, the proposed control scheme automatically allocates the control efforts with respect to (w.r.t) the real-time disturbance characteristics. The effect is that the position error signal (PES) in HDDs can be minimized with effective vibration cancellation. Evaluation of the proposed algorithm is performed by experiments on a Voice-Coil-Driven Flexible Positioner (VCFP) system.
},
	Annote = {Impact factor: 1.467
Pending open-source code (Sun).},
	Author = {Liting Sun and Tianyu Jiang and Xu Chen},
	Date-Modified = {2019-01-06 19:35:36 -0500},
	Doi = {10.1109/TMAG.2017.2654200},
	Issn = {0018-9464},
	Journal = {{IEEE} Transactions on Magnetics},
	Keywords = {adaptive control, wide-band disturbance rejection},
	Month = {May},
	Number = {5},
	Pages = {1-13},
	Title = {Adaptive Loop Shaping for Wideband Disturbances Attenuation in Precision Information Storage Systems},
	Url = {https://www.researchgate.net/publication/312517374_Adaptive_Loop_Shaping_for_Wide-Band_Disturbances_Attenuation_in_Precision_Information_Storage_Systems},
	Volume = {53},
	Year = {2017},
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One particular category, defined as wide-band disturbances, can generate vibrations with their energy highly concentrated at several frequency bands. Such vibrations are commonly time-varying and strongly environment/product-dependent; and the wide spectral peaks can occur at frequencies above the servo bandwidth. This paper considers the attenuation of such challenging vibrations in the track-following problem of HDDs. Due to the fundamental limitation imposed by the Bode's Integral Theorem, the attenuation of such wide-band disturbances may cause unacceptable amplifications at other frequencies. To achieve a good performance and an optimal tradeoff, an add-on adaptive vibration-compensation scheme is proposed in this paper. Through parameter adaptation algorithms that online identify both the center frequencies and the widths of the spectral peaks, the proposed control scheme automatically allocates the control efforts with respect to (w.r.t) the real-time disturbance characteristics. The effect is that the position error signal (PES) in HDDs can be minimized with effective vibration cancellation. Evaluation of the proposed algorithm is performed by experiments on a Voice-Coil-Driven Flexible Positioner (VCFP) system.\n},\n\tAnnote = {Impact factor: 1.467\nPending open-source code (Sun).},\n\tAuthor = {Liting Sun and Tianyu Jiang and Xu Chen},\n\tDate-Modified = {2019-01-06 19:35:36 -0500},\n\tDoi = {10.1109/TMAG.2017.2654200},\n\tIssn = {0018-9464},\n\tJournal = {{IEEE} Transactions on Magnetics},\n\tKeywords = {adaptive control, wide-band disturbance rejection},\n\tMonth = {May},\n\tNumber = {5},\n\tPages = {1-13},\n\tTitle = {Adaptive Loop Shaping for Wideband Disturbances Attenuation in Precision Information Storage Systems},\n\tUrl = {https://www.researchgate.net/publication/312517374_Adaptive_Loop_Shaping_for_Wide-Band_Disturbances_Attenuation_in_Precision_Information_Storage_Systems},\n\tVolume = {53},\n\tYear = {2017},\n\tBdsk-File-1 = {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},\n\tBdsk-File-2 = {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},\n\tBdsk-File-3 = {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},\n\tBdsk-Url-1 = {http://dx.doi.org/10.1109/TMAG.2017.2654200},\n\tBdsk-Url-2 = {https://www.researchgate.net/publication/312517374_Adaptive_Loop_Shaping_for_Wide-Band_Disturbances_Attenuation_in_Precision_Information_Storage_Systems}}\n\n","author_short":["Sun, L.","Jiang, T.","Chen, X."],"key":"Sun2016","id":"Sun2016","bibbaseid":"sun-jiang-chen-adaptiveloopshapingforwidebanddisturbancesattenuationinprecisioninformationstoragesystems-2017","role":"author","urls":{"Paper":"https://www.researchgate.net/publication/312517374_Adaptive_Loop_Shaping_for_Wide-Band_Disturbances_Attenuation_in_Precision_Information_Storage_Systems"},"keyword":["adaptive control","wide-band disturbance rejection"],"metadata":{"authorlinks":{"chen, x":"https://xchen-me.github.io/publications/"}},"downloads":0,"html":""},"search_terms":["adaptive","loop","shaping","wideband","disturbances","attenuation","precision","information","storage","systems","sun","jiang","chen"],"keywords":["adaptive control","wide-band disturbance rejection"],"authorIDs":["545761e42abc8e9f37000341","6c6WK2TnGgXAR7F3w","QhCAwjWEPMJoxs82A"],"dataSources":["hHZrcJyhveBr8MCqA"]}