Harvesting acoustic energy by coherence resonance of a bi-stable piezoelectric harvester

Zhiyong Zhou, Weiyang Qin and Pei Zhu

Energy, 2017, vol. 126, issue C, 527-534

Abstract: In this work we proposed a bi-stable acoustic energy harvester (BAEH) to scavenge noise energy. The nonlinear BAEH is composed of a piezoelectric cantilever beam with a flat plate attaching at the free end, a curved plate, a movable magnet and a fixed magnet. The incident and reflecting sound waves will produce dynamic acting forces on the front and the back of the flat plate, thereby exciting the plate to oscillate and take snap-through between equilibrium positions, and thus give a large output. The experimental results prove that the BAEH can execute snap-through at a relatively low intensity of noise. It can reach coherence resonance and thus generate a large output voltage. It is found that the separation distance d is a key factor for occurrence of snap-through. Therefore, for a given sound pressure level (SPL), the BAEH can be optimized to reach coherence resonance and generates the maximum output power.

Keywords: Acoustic energy harvesting; Bi-stable acoustic energy harvester; Snap-through; Coherence resonance (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (21)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544217304371
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:126:y:2017:i:c:p:527-534

DOI: 10.1016/j.energy.2017.03.062

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().