Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20814
Title: Optimal design of PZT actuators in active structural acoustic control of a cylindrical shell with a floor partition
Authors: Li, DS
Cheng, L 
Gosselin, CM
Issue Date: 2004
Publisher: Academic Press
Source: Journal of sound and vibration, 2004, v. 269, no. 3-5, p. 569-588 How to cite?
Journal: Journal of sound and vibration 
Abstract: Genetic algorithms (GAs) are employed to optimize locations of PZT actuators in an active structural acoustic control (ASAC) system comprising a cylindrical shell with an internal floor partition. The effect of PZT actuators is simulated using a bending model and an in-plane force model, respectively. The characteristics of the optimal placements of both models are discussed and compared. Numerical simulations demonstrate that for the investigated structure, the in-plane force model has a better control performance than the bending model in the low-frequency range. The underlying physics of the control results are analyzed. Considering the practical applicability of optimally designed ASAC systems, the control performance of the optimal configuration obtained at a single frequency is assessed in the low-frequency range between 100 and 500 Hz, with results showing a significant sound attenuation in the whole range of interest.
URI: http://hdl.handle.net/10397/20814
ISSN: 0022-460X
EISSN: 1095-8568
DOI: 10.1016/S0022-460X(03)00044-0
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