Pohl, Martin (2016) Increasing the performance of negative capacitance shunts by enlarging the output voltage to the requirements of piezoelectric transducers. Journal of Intelligent Material Systems and Structures. SAGE Publications. doi: 10.1177/1045389X16666181. ISSN 1045-389X.
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Official URL: https://doi.org/10.1177/1045389X16666181
Abstract
Piezoelectric shunt damping is investigated as one possible solution for improving the vibroacoustic behavior of noise-prone lightweight structures. The negative capacitance shunt circuit appears to be best choice due to its broadband damping effect. Usually it is built from analog electronic components, such as operational amplifiers, resistors and capacitors. Laboratory tests are possible with this setup, but it is limited to low vibrational excitation levels, because the known circuits are not capable of accessing a sufficient voltage amplitude at the piezoelectric transducers, which is required for high vibration amplitudes. Therefore an improved approach is presented in this paper, which addresses the specific voltage requirements of a common piezoelectric transducer. It comprises a tailored power source and an appropriate concept for the negative capacitance shunt hardware. There only standard operational amplifiers together with an external high voltage power amplifier circuit are used 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. It can be shown, that using the full voltage range of the piezoelectric transducer allows higher damping of structures without any saturation effects.
Item URL in elib: | https://elib.dlr.de/104512/ | ||||||||
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Document Type: | Article | ||||||||
Title: | Increasing the performance of negative capacitance shunts by enlarging the output voltage to the requirements of piezoelectric transducers | ||||||||
Authors: |
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Date: | 2016 | ||||||||
Journal or Publication Title: | Journal of Intelligent Material Systems and Structures | ||||||||
Refereed publication: | Yes | ||||||||
Open Access: | No | ||||||||
Gold Open Access: | No | ||||||||
In SCOPUS: | Yes | ||||||||
In ISI Web of Science: | Yes | ||||||||
DOI: | 10.1177/1045389X16666181 | ||||||||
Publisher: | SAGE Publications | ||||||||
ISSN: | 1045-389X | ||||||||
Status: | Published | ||||||||
Keywords: | piezoelectric shunt damping, negative capacitance, vibration damping, high voltage | ||||||||
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 - Systems and Cabin (old) | ||||||||
Location: | Braunschweig | ||||||||
Institutes and Institutions: | Institute of Composite Structures and Adaptive Systems > Adaptronics | ||||||||
Deposited By: | Pohl, Martin | ||||||||
Deposited On: | 06 Jun 2016 07:31 | ||||||||
Last Modified: | 31 Oct 2023 11:07 |
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