White Rose University Consortium logo
University of Leeds logo University of Sheffield logo York University logo

The benefits of Duffing-type nonlinearities and electrical optimisation of a mono-stable energy harvester under white Gaussian excitations

Green, P. L., Worden, K., Atallah, K. and Sims, N. D. (2012) The benefits of Duffing-type nonlinearities and electrical optimisation of a mono-stable energy harvester under white Gaussian excitations. Journal of Sound and Vibration, 331 (20). pp. 4504-4517. ISSN 0022-460X

Full text available as:
[img]
Preview
Text
WRRO_74419.pdf

Download (551Kb)

Abstract

This work is concerned with the performance of a single degree of freedom electromagnetic energy harvester when subjected to a broadband white noise base acceleration. First, using the Fokker–Planck–Kolmogorov equation, it is shown that Duffing-type nonlinearities can be used to reduce the size of energy harvesting devices without affecting their power output. This is then verified using the technique of Equivalent Linearisation. Second, it is shown analytically that the optimum load resistance of the device is different to that which is dictated by the principle of impedance matching. This result is then verified experimentally.

Item Type: Article
Copyright, Publisher and Additional Information: © 2012 Elsevier. This is an author produced version of a paper subsequently published in Journal of Sound and Vibration. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Energy harvesting, Duffing, random excitation, nonlinear vibration, electromagnetic
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Dr Neil D Sims
Date Deposited: 10 Jul 2012 08:39
Last Modified: 08 Feb 2013 17:39
Published Version: http://dx.doi.org/10.1016/j.jsv.2012.04.035
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: http://dx.doi.org/10.1016/j.jsv.2012.04.035
URI: http://eprints.whiterose.ac.uk/id/eprint/74419

Actions (login required)

View Item View Item