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Misol, Malte and Algermissen, Stephan and Unruh, Oliver (2010) Adaptive feedforward control of smart CFRP-panels excited by a turbulent boundary layer. Inter-Noise, 2010-06-13 - 2010-06-16, 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/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||
| Title: | Adaptive feedforward control of smart CFRP-panels excited by a turbulent boundary layer | ||||||||||||||||
| Authors: |
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| 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 Start Date: | 13 June 2010 | ||||||||||||||||
| Event End Date: | 16 June 2010 | ||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport, Aeronautics, Space and Transport (old) | ||||||||||||||||
| HGF - Program: | Transport, Aeronautics, Space (old) | ||||||||||||||||
| HGF - Program Themes: | V SH - Verbesserung der Sicherheit im Verkehr (old), L VU - Air Traffic and Environment (old), W - no assignment | ||||||||||||||||
| DLR - Research area: | Transport, Aeronautics, Space | ||||||||||||||||
| DLR - Program: | V SH - Verbesserung der Sicherheit im Verkehr, L VU - Air Traffic and Environment, W - no assignment | ||||||||||||||||
| 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: | 24 Apr 2024 19:30 |
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