Performance Barriers for Single-Degree-of-Freedom Energy Harvesters Under Generic Stochastic Excitation
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v006t10a059-detc2014-34134.pdf
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2.26 MB
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Author(s)
Joo, Han Kyul
Sapsis, Themistoklis P.
Date Issued
August 2014
Journal
Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference
Publisher
ASME International
Citation
Joo, Han Kyul, and Themistoklis P. Sapsis. “Performance Barriers for Single-Degree-of-Freedom Energy Harvesters Under Generic Stochastic Excitation.” Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, 17-20 August, 2010, Buffalo, New York, USA, ASME, 2010. © 2014 by ASME
Version
Final published version
Abstract
We develop performance criteria for the objective comparison of different classes of single-degree-of-freedom oscillators under stochastic excitation. For each family of oscillators, these objective criteria take into account the maximum possible energy harvested for a given response level, which is a quantity that is directly connected to the size of the harvesting configuration. We prove that the derived criteria are invariant with respect to magnitude or temporal rescaling of the input spectrum and they depend only on the relative distribution of energy across different harmonics of the excitation. We then compare three different classes of linear and nonlinear oscillators and using stochastic analysis tools we illustrate that in all cases of excitation spectra (monochromatic, broadband, white-noise) the optimal performance of all designs cannot exceed the performance of the linear design.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1115/DETC2014-34134
