The bandwidth of optimized nonlinear vibration-based energy harvesters
The bandwidth of optimized nonlinear vibration-based energy harvesters
In an attempt to improve the performance of vibration-based energy harvesters, many authors suggest that nonlinearities can be exploited to increase the bandwidths of linear devices. Nevertheless, the complex dependence of the response upon the input excitation has made a realistic comparison of linear harvesters with nonlinear energy harvesters challenging. In a previous work it has been demonstrated that for a given frequency of excitation, it is possible to achieve the same maximum power for a nonlinear harvester as that for a linear harvester, provided that the resistance and the linear stiffness of both are optimized. This work focuses on the bandwidths of linear and nonlinear harvesters and shows which device is more suitable for harvesting energy from vibrations. The work considers different levels of excitation as well as different frequencies of excitation. In addition, the effect of the mechanical damping of the oscillator on the power bandwidth is shown for both the linear and nonlinear cases.
Cammarano, A.
c0c85f55-3dfc-4b97-9b79-e2554406a12b
Neild, S.A.
e11b68bb-ddff-4cac-a8a7-798cc3cc3891
Burrow, S.G.
76e1fbd4-91d4-443a-a0b1-bc7a4d88cd78
Inman, D.J.
e7a193c3-1285-415c-9f40-404ce6823a7d
25 March 2014
Cammarano, A.
c0c85f55-3dfc-4b97-9b79-e2554406a12b
Neild, S.A.
e11b68bb-ddff-4cac-a8a7-798cc3cc3891
Burrow, S.G.
76e1fbd4-91d4-443a-a0b1-bc7a4d88cd78
Inman, D.J.
e7a193c3-1285-415c-9f40-404ce6823a7d
Cammarano, A., Neild, S.A., Burrow, S.G. and Inman, D.J.
(2014)
The bandwidth of optimized nonlinear vibration-based energy harvesters.
Smart Materials and Structures, 23 (5), [055019].
(doi:10.1088/0964-1726/23/5/055019).
Abstract
In an attempt to improve the performance of vibration-based energy harvesters, many authors suggest that nonlinearities can be exploited to increase the bandwidths of linear devices. Nevertheless, the complex dependence of the response upon the input excitation has made a realistic comparison of linear harvesters with nonlinear energy harvesters challenging. In a previous work it has been demonstrated that for a given frequency of excitation, it is possible to achieve the same maximum power for a nonlinear harvester as that for a linear harvester, provided that the resistance and the linear stiffness of both are optimized. This work focuses on the bandwidths of linear and nonlinear harvesters and shows which device is more suitable for harvesting energy from vibrations. The work considers different levels of excitation as well as different frequencies of excitation. In addition, the effect of the mechanical damping of the oscillator on the power bandwidth is shown for both the linear and nonlinear cases.
Text
Cammarano_2014_Smart_Mater._Struct._23_055019
- Version of Record
More information
Accepted/In Press date: 25 February 2014
Published date: 25 March 2014
Identifiers
Local EPrints ID: 490814
URI: http://eprints.soton.ac.uk/id/eprint/490814
ISSN: 0964-1726
PURE UUID: b345f865-55f9-4599-923f-b954400fc6e3
Catalogue record
Date deposited: 06 Jun 2024 17:08
Last modified: 07 Jun 2024 02:08
Export record
Altmetrics
Contributors
Author:
A. Cammarano
Author:
S.A. Neild
Author:
S.G. Burrow
Author:
D.J. Inman
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics