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Proceedings Paper

Hybrid passive-active modal networks for structural acoustic control (Conference Presentation)

Paper Abstract

Distributions of piezoelectric patches bonded to structures provide a means to alter or control, through active or passive means, the dynamic response of the host structure. Numerous active control schemes for such composite structures have been explored. Alternatively, for certain structures, a passive electrical network may be implemented which presents an electrical analog of the modal response of the structure, effectively providing a multi-modal, distributed passive tuned mass modal damper capability. Numerous tuned-mass damper design concepts (“tunings”) may be applied to such a passive network. Further, the distributed network analog, when coupled with active control concepts, permits a hybrid distributed passive-active modal control capability. This paper explores this hybrid distributed network control concept applied to a clamped rectangular plate. A unit-cell discrete representation of the plate leads to an electrical analog comprised of passive inductors, transformers and resistors. Addition of synthetic (or controlled) impedances at a limited set of points within the network permits dynamic adjustment of the frequency response of the system.

Paper Details

Date Published: 10 May 2017
PDF: 1 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101640E (10 May 2017); doi: 10.1117/12.2260440
Show Author Affiliations
Kenneth A. Cunefare, Georgia Institute of Technology (United States)
Boris Lossouarn, Conservatoire National des Arts et Métiers (France)
Manuel Collet, Ecole Centrale de Lyon (France)

Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)

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