Kokott, Alexander und Monner, Hans Peter (2023) Experimental Investigation of Structural Intensity Control in a Vibrating Panel Using a Finite Differencing Approach. In: 10th Convention of the European Acoustics Association, EAA 2023, Seiten 5261-5266. Forum Acusticum 2023, 2023-09-11 - 2023-09-15, Turin, Italien. doi: 10.61782/fa.2023.0846. ISBN 978-888894267-4. ISSN 2221-3767.
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Offizielle URL: https://dael.euracoustics.org/confs/fa2023/data/articles/000846.pdf
Kurzfassung
The active reduction of vibrational energy flow by means of structural intensity (SI) proposes to be an effective approach towards global downstream attenuation of a structure based on preliminary numerical studies. This work examines an approach on SI control by approximating the latter by finite differencing arrays of velocities. Here, only transversal waves are considered. Different levels of complexity are taken into consideration and compared to a state-of-the-art active vibration control. A feedforward controller is estimated based on the disturbance force as a reference signal. The controller minimizes the target functions, being different components of SI in order to evaluate the impact of error sensor array complexity on global reduction. Furthermore, multiple configurations of control actuators, specifically inertial shakers, are investigated. It can be shown that targeting additional internal forces benefits in a significantly lower global vibration level downstream of the error sensor positions, whilst using a less dense array of sensors with respect to wavelength of the sound. However, as already shown in numerical studies, implementing internal forces up to third order of spatial derivatives (shear forces) perform worse than a simple approach with additional angular velocity, as sensing errors amplify non-linearly.
elib-URL des Eintrags: | https://elib.dlr.de/197608/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | Experimental Investigation of Structural Intensity Control in a Vibrating Panel Using a Finite Differencing Approach | ||||||||||||||||
Autoren: |
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Datum: | September 2023 | ||||||||||||||||
Erschienen in: | 10th Convention of the European Acoustics Association, EAA 2023 | ||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||
Open Access: | Ja | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
DOI: | 10.61782/fa.2023.0846 | ||||||||||||||||
Seitenbereich: | Seiten 5261-5266 | ||||||||||||||||
Herausgeber: |
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ISSN: | 2221-3767 | ||||||||||||||||
ISBN: | 978-888894267-4 | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | structural intensity, active control, flexural waves | ||||||||||||||||
Veranstaltungstitel: | Forum Acusticum 2023 | ||||||||||||||||
Veranstaltungsort: | Turin, Italien | ||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
Veranstaltungsbeginn: | 11 September 2023 | ||||||||||||||||
Veranstaltungsende: | 15 September 2023 | ||||||||||||||||
Veranstalter : | European Acoustics Association | ||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||
HGF - Programmthema: | Komponenten und Systeme | ||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||
DLR - Forschungsgebiet: | L CS - Komponenten und Systeme | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Wartung und Kabine | ||||||||||||||||
Standort: | Braunschweig | ||||||||||||||||
Institute & Einrichtungen: | Institut für Systemleichtbau > Adaptronik | ||||||||||||||||
Hinterlegt von: | Kokott, Alexander | ||||||||||||||||
Hinterlegt am: | 01 Nov 2023 08:43 | ||||||||||||||||
Letzte Änderung: | 23 Mai 2024 08:58 |
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