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Negative capacitance shunt damping system with optimized characteristics for use with piezoelectric transducers

Pohl, Martin (2014) Negative capacitance shunt damping system with optimized characteristics for use with piezoelectric transducers. In: SPIE Conference on Smart Structures NDE 2014. SPIE 2014, 2014-03-10 - 2014-03-13, San Diego, USA. doi: 10.1117/12.2044683.

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Kurzfassung

For ecologic sustainability and decreasing reserves of fossile energy sources, fuel efficiency is a major concern especially for passenger aircraft. Therefore, lightweight structures made from carbon fiber plastics offer great potential. But when used for panel-like structures, they have the disadvantage of lower damping and coincidence frequencies compared to conventional differential metal constructions. Both aspects lead to an increased vibration level and by this a higher noise radiation. Because of this, special noise and vibration treatment is needed to ensure passenger cabin comfort. Besides passive damping and active structural acoustic control (ASAC), piezoelectric shunt damping is investigated. Due to its broadband performance, the negative capacitance shunt can be used for multimode systems with varying eigenfrequencies. These shunts are usually built with operational amplifiers and passive components as resistors and capacitors. This setup is sufficient for laboratory tests at low excitation levels. In fact, it is not capable of accessing the full voltage amplitude of common piezoelectric transducers, because most operational amplifiers only deliver $\pm15V$ maximum output voltage. Therefore an improved setup is presented in this paper, which addresses the specific voltage requirements of a common piezoelectric transducer to achieve best performance. It comprises a tailored power source and an appropriate concept for the negative capacitance shunt hardware. This new hardware only uses standard operational amplifiers together with a high voltage power amplifier to cover the whole operating range of a piezoelectric transducer. A demonstrator board is developed and experimentally investigated at a test structure. Finally, the results are compared to a conventional setup.

elib-URL des Eintrags:https://elib.dlr.de/91207/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Negative capacitance shunt damping system with optimized characteristics for use with piezoelectric transducers
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Pohl, MartinInstitut für Faserverbundleichtbau und Adaptronik - AdaptronikNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:März 2014
Erschienen in:SPIE Conference on Smart Structures NDE 2014
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.1117/12.2044683
Status:veröffentlicht
Stichwörter:piezoelectric shunt damping, negative capacitance, vibration damping
Veranstaltungstitel:SPIE 2014
Veranstaltungsort:San Diego, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:10 März 2014
Veranstaltungsende:13 März 2014
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Systeme und Kabine (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Adaptronik
Hinterlegt von: Stanitzek, Silke
Hinterlegt am:23 Okt 2014 08:16
Letzte Änderung:24 Apr 2024 19:57

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