Enhanced vibrational energy harvesting using nonlinear stochastic resonance

Stochastic resonance has seen wide application in the physical sciences as a tool to understand weak signal amplification by noise. However, this apparently counter-intuitive phenomenon does not appear to have been exploited as a tool to enhance vibrational energy harvesting. In this note we demonst...

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Bibliographic Details
Published in:Journal of sound and vibration 2008-12, Vol.318 (4), p.655-662
Main Authors: McInnes, C.R., Gorman, D.G., Cartmell, M.P.
Format: Article
Language:English
Subjects:
Amplification
Devices
Energy use
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Harvesting
Nonlinearity
Physics
Solid mechanics
Stochastic resonance
Structural and continuum mechanics
Vibration
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Summary:Stochastic resonance has seen wide application in the physical sciences as a tool to understand weak signal amplification by noise. However, this apparently counter-intuitive phenomenon does not appear to have been exploited as a tool to enhance vibrational energy harvesting. In this note we demonstrate that by adding periodic forcing to a vibrationally excited energy harvesting mechanism, the power available from the device is apparently enhanced over a mechanism without periodic forcing. In order to illustrate this novel effect, a conceptually simple, but plausible model of such a device is proposed to explore the use of stochastic resonance to enhance vibrational energy harvesting.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2008.07.017