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Title: Design optimization of a damped hybrid vibration absorber
Authors: Cheung, Y. L.
Wong, W. O.
Cheng, L.
Subjects: Vibration absorber
Tuned mass damper
Hybrid control
Issue Date: 12-Feb-2012
Publisher: Elsevier
Source: Journal of sound and vibration, Feb, 2012. v. 331, no. 4, p. 750-766.
Abstract: In this article, the H∞ optimization design of a hybrid vibration absorber (HVA), including both passive and active elements, for the minimization of the resonant vibration amplitude of a single degree-of-freedom (sdof) vibrating structure is derived by using the fixed-points theory. The optimum tuning parameters are the feedback gain, the tuning frequency, damping and mass ratios of the absorber. The effects of these parameters on the vibration reduction of the primary structure are revealed based on the analytical model. Design parameters of both passive and active elements of the HVA are optimized for the minimization of the resonant vibration amplitude of the primary system. One of the inherent limitations of the traditional passive vibration absorber is that its vibration absorption is low if the mass ratio between the absorber mass and the mass of the primary structure is low. The proposed HVA overcomes this limitation and provides very good vibration reduction performance even at a low mass ratio. The proposed optimized HVA is compared to a recently published HVA designed for similar propose and it shows that the present design requires less energy for the active element of the HVA than the compared design.
Rights: ©2011 Elsevier Ltd. All rights reserved.
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Sound and Vibration. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Sound and Vibration, vol. 331, no. 4(13 Feb 2012), p. 750–766, DOI: 10.1016/j.jsv.2011.10.011
Type: Journal/Magazine Article
DOI: 10.1016/j.jsv.2011.10.011
ISSN: 0022-460X
Appears in Collections:ME Journal/Magazine Articles

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