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Proceedings 2018, 2(13), 1092; https://doi.org/10.3390/proceedings2131092

Investigation of a Nonlinear Vibrational Energy Harvester in the Stochastic Resonance Regime

1
Department of Electric Electronic and Information Engineering, University of Catania, 95125 Catania, Italy
2
Space and Naval Warfare Systems Center Pacific, Code 71000, San Diego, CA 92152-5000, USA
Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.
*
Author to whom correspondence should be addressed.
Published: 7 December 2018
PDF [436 KB, uploaded 7 December 2018]

Abstract

In this paper the possibility to exploit advantageously the Stochastic Resonance phenomenon in a Nonlinear Energy Harvester to scavenge energy from wide band mechanical vibrations is experimentally demonstrated. The device is demonstrated to be capable of scavenging energy in case of a subthreshold sinusoidal vibration and a wideband noise (limited at 100 Hz) superimposed. The existence of an optimal value of the noise intensity maximizing the switching ratio of the bistable beam, then the performances, is experimentally demonstrated. The harvester is observed to generate power up to about 60 µW and 150 µW in case of a subthreshold sinusoidal input at 1 Hz and 3 Hz with a superimposed noise limited at 100 Hz.
Keywords: vibrations; nonlinear harvester; snap through buckling; stochastic resonance; piezoelectric transducers vibrations; nonlinear harvester; snap through buckling; stochastic resonance; piezoelectric transducers
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Andò, B.; Baglio, S.; Bulsara, A.R.; Marletta, V. Investigation of a Nonlinear Vibrational Energy Harvester in the Stochastic Resonance Regime. Proceedings 2018, 2, 1092.

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