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Active Sidewall Panels with Virtual Microphones for Aircraft Interior Noise Reduction

Misol, Malte (2020) Active Sidewall Panels with Virtual Microphones for Aircraft Interior Noise Reduction. Applied Sciences, 10 (6828), pp. 1-13. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/app10196828. ISSN 2076-3417.

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Official URL: https://www.mdpi.com/2076-3417/10/19/6828

Abstract

This work deals with the reduction of aircraft interior noise using active sidewall panels (linings). Research work done in the past showed that considerable reductions of the sound pressure level (SPL) in the cabin are possible using structural actuators mounted on the lining and error microphones distributed in front of the linings. However, microphones are undesirable for error sensing because they are not suitable for the realisation of an integrated and autonomous active lining (smart lining module). Therefore, the goal of the present work is the replacement of the microphones by structural sensors. Using the structural sensors as remote sensors in combination with an acoustic filter, virtual microphones can be defined. The present study relies on experimental data of a double-walled fuselage system which is mounted in a sound transmission loss facility. Simulation results based on measured time data and identified frequency response functions are provided. Different configurations of virtual microphones are investigated regarding the SPL reduction and the induced vibration of the lining panel.

Item URL in elib:https://elib.dlr.de/136353/
Document Type:Article
Title:Active Sidewall Panels with Virtual Microphones for Aircraft Interior Noise Reduction
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Misol, MalteMalte.Misol (at) dlr.dehttps://orcid.org/0000-0001-8056-1569
Date:2020
Journal or Publication Title:Applied Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
DOI :10.3390/app10196828
Page Range:pp. 1-13
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2076-3417
Status:Published
Keywords:aircraft; interior noise; active noise control; sensors; actuators; optimization; remote sensors; virtual microphones
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Misol, Dr. Malte
Deposited On:12 Oct 2020 07:52
Last Modified:16 Oct 2020 12:50

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