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Adaptive feedforward control of smart CFRP-panels excited by a turbulent boundary layer

Misol, Malte and Algermissen, Stephan and Unruh, Oliver (2010) Adaptive feedforward control of smart CFRP-panels excited by a turbulent boundary layer. Inter-Noise, 13.06.2010 - 16.06.2010, Lissabon, Portugal.

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Abstract

The objective of this work is the experimental investigation of sound transmission through a smart CFRP-panel which is excited by a turbulent boundary layer (TBL) in the aero-acoustic wind tunnel of DLR. The research activities are aimed at the development of a lightweight smart panel with improved acoustic properties below 500Hz for application in future aircraft. The smart panel consists of a CFRP-structure equipped with piezo-actuators and sensors. The control variables are generated by an adaptive feedforward-controller using multiple reference sig-nals. Due to the control action, a narrowband sound power level (SWL) reduction greater than 10dB was achieved. The maximum reduction in third-octave band SWL was above 4dB. Continued research on reference sensing and signal processing will further improve the transmission loss of smart lightweight structures under TBL-excitation.

Item URL in elib:https://elib.dlr.de/64846/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Adaptive feedforward control of smart CFRP-panels excited by a turbulent boundary layer
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Misol, MalteUNSPECIFIEDUNSPECIFIED
Algermissen, StephanUNSPECIFIEDUNSPECIFIED
Unruh, OliverUNSPECIFIEDUNSPECIFIED
Date:June 2010
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:ASAC, FxLMS, CFRP-Panel, TBL-Noise, Multi-Reference
Event Title:Inter-Noise
Event Location:Lissabon, Portugal
Event Type:international Conference
Event Dates:13.06.2010 - 16.06.2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Transport, Aeronautics, Space (old)
HGF - Program Themes:W - no assignment, L VU - Air Traffic and Environment (old), V SH - Verbesserung der Sicherheit im Verkehr (old)
DLR - Research area:Transport, Aeronautics, Space
DLR - Program:W - no assignment, L VU - Air Traffic and Environment, V SH - Verbesserung der Sicherheit im Verkehr
DLR - Research theme (Project):V - Aktive Vibrations- und Lärmreduzierung an Fahrzeugen (old), L - Quiet Air Traffic (old), W - no assignment (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Ries, Doris
Deposited On:29 Jul 2010 09:11
Last Modified:29 Jul 2010 09:11

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