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Causal feedforward control of a stochastically excited fuselage structure with active sidewall panel

Misol, Malte and Haase, Thomas and Monner, Hans Peter and Sinapius, Michael (2014) Causal feedforward control of a stochastically excited fuselage structure with active sidewall panel. Journal of the Acoustical Society of America, 136 (4). Acoustical Society of America. DOI: 10.1121/1.4895710 ISSN 0001-4966

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Official URL: https://asa.scitation.org/doi/10.1121/1.4895710

Abstract

This paper provides experimental results of an aircraft-relevant double panel structure mounted in a Sound transmission loss facility. The primary structure of the double panel system is excited either by a stochastic point force or by a diffuse sound field synthesized in the reverberation room of the transmission loss facility. The secondary structure, which is connected to the frames of the primary structure, is augmented by actuators and sensors implementing an active feedforward control system. Special emphasis is placed on the causality of the active feedforward control system and its implications on the disturbance rejection at the error sensors. The coherence of the sensor signals is analysed for the two different disturbance excitations. Experimental results are presented regarding the causality, coherence and disturbance rejection of the active feedforward control system. Furthermore, the sound transmission loss of the double panel system is evaluated for different configurations of the active system. A principal result of this work is the evidence that it is possible to strongly influence the transmission of stochastic disturbance sources through double panel configurations by means of an active feedforward control system.

Item URL in elib:https://elib.dlr.de/90812/
Document Type:Article
Additional Information:Copyright (2014) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in J. Acoust. Soc. Am. 136 (4), October 2014 and may be found at https://asa.scitation.org/doi/10.1121/1.4895710.
Title:Causal feedforward control of a stochastically excited fuselage structure with active sidewall panel
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Misol, MalteGerman Aerospace Center (DLR), Institute of Composite Structures and Adaptive SystemsUNSPECIFIED
Haase, ThomasGerman Aerospace Center (DLR), Institute of Composite Structures and Adaptive SystemsUNSPECIFIED
Monner, Hans PeterGerman Aerospace Center (DLR), Institute of Composite Structures and Adaptive SystemsUNSPECIFIED
Sinapius, MichaelTechnical University Braunschweig, Institute of Adaptronics and Functional IntegrationUNSPECIFIED
Date:2014
Journal or Publication Title:Journal of the Acoustical Society of America
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:136
DOI :10.1121/1.4895710
Publisher:Acoustical Society of America
ISSN:0001-4966
Status:Published
Keywords:AVC, ASAC, double panel, experiments
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 - Simulation and Validation, V - no assignment
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Misol, Dr. Malte
Deposited On:29 Sep 2014 08:16
Last Modified:02 Nov 2019 22:51

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