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Energy Harvesting From Vibrations With a Nonlinear Oscillator

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Translated title of the contributionEnergy Harvesting From Vibrations With a Nonlinear Oscillator
Original languageEnglish
Pages (from-to)021009
Number of pages7
JournalJournal of Vibration and Acoustics
Issue number2
DatePublished - Mar 2010


In this paper, we present a nonlinear electromagnetic energy harvesting device that has a broadly resonant response. The nonlinearity is generated by a particular arrangement of magnets in conjunction with an iron-cored stator. We show the resonant response of the system to both pure-tone excitation and narrow-band random excitation. In addition to the primary resonance, the superharmonic resonances of the harvester are also investigated and we show that the corresponding mechanical upconversion of the excitation frequency may be useful for energy harvesting. The harvester is modeled using a Duffing-type equation and the results are compared with the experimental data.

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