Smart Double Panel for the Sound Radiation Control: Blended Velocity Feedback

Alujević, Neven and Gardonio, Paolo and Frampton, Kenneth D. (2011) Smart Double Panel for the Sound Radiation Control: Blended Velocity Feedback. = Smart Double Panel for the Sound Radiation Control: Blended Velocity Feedback. Aiaa journal, 49 (6). pp. 1123-1134. ISSN 0001-1452. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q1 (2011). Točan broj autora: 3.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/1.44284?journ...

Abstract

In this paper an active damping method using blended velocity feedback for the reduction of sound transmission through a simplified aircraft double panel is considered. The double panel consists of a source and a radiating panel, which are coupled acoustically by the air in the cavity between them and structurally by four elastic mounts. The double panel is equipped with an array of nine voice-coil actuators that can react against the two panels. A velocity sensor is mounted at both panel junctions of each actuator. The outputs from the sensors on the source and radiating panels are weighted by factors α and 1 - α, respectively. The two weighted signals are then subtracted and combined into the error signal fed back to the actuator via a constant amplification gain. The stability and performance of such a decentralized velocity feedback system are analyzed experimentally as a function of the weighting factor α. Reductions between -10 and -18 dB in the radiated sound power have been measured at low-frequency resonances of the double panel, depending on the weighting factor implemented.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Aircraft; Noise; Vibration; Active control; Smart structures
Subjects: TECHNICAL SCIENCE > Electrical Engineering
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: Yes
Indexed in Current Contents: Yes
Citations JCR: 6 (14.12.2017.)
Quartiles: Q1 (2011)
Citations SCOPUS: 9 (14.12.2017.)
Date Deposited: 20 Mar 2017 13:34
Last Modified: 15 Dec 2017 12:45
URI: http://repozitorij.fsb.hr/id/eprint/7589

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