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The identification of period-doubling in a nonlinear two-degree-of-freedom electromagnetic vibrational energy harvester

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Show simple item record Nico, Valeria Frizzell, Ronan Punch, Jeff 2021-10-13T14:37:43Z 2021-10-13T14:37:43Z 2020
dc.description peer-reviewed en_US
dc.description.abstract Common vibrational energy harvesters are generally based on a linear mass-spring oscillator model, and these typically show narrow bandwidth and high resonant frequency at small scales. To overcome these problems, a two-degree-of-freedom nonlinear velocity-amplified energy harvester has been developed. The device comprises two masses, relatively oscillating one inside the other between four sets of magnetic springs. The magnetic springs introduce nonlinear effects, such as period doubling, that can be exploited to enhance the output power and bandwidth of the harvester. This article studies the dynamics of the harvester when a key geometrical parameter (the height of the device) is varied. For large height values, a significant increase of the output power in regions far from the resonant frequency of the device is observed, and the associated period-doubling effect was verified through high-speed imaging. It is demonstrated that nonlinear effects can be used to enhance the bandwidth of the device in order to harvest energy in regions far from resonance. en_US
dc.language.iso eng en_US
dc.publisher IEEE Computer Society en_US
dc.relation.ispartofseries IEEE/ASME Transactions on Mechatronics;25 (6), pp. 2973-2980
dc.rights © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. en_US
dc.subject nonlinear en_US
dc.subject electromagnetic vibrational energy harvesting en_US
dc.subject period-doubling en_US
dc.title The identification of period-doubling in a nonlinear two-degree-of-freedom electromagnetic vibrational energy harvester en_US
dc.type info:eu-repo/semantics/conferenceObject en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1109/TMECH.2020.3000431
dc.contributor.sponsor SFI en_US
dc.contributor.sponsor IRC en_US
dc.relation.projectid 10/CE/I1853 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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