Performance enhancement of nonlinear asymmetric bistable energy harvesting from harmonic, random and human motion excitations

Wei Wang; Junyi Cao; Chris R. Bowen; Daniel J. Inman; Jing Lin

doi:10.1063/1.5027555

Performance enhancement of nonlinear asymmetric bistable energy harvesting from harmonic, random and human motion excitations

Wei Wang, Junyi Cao, Chris R. Bowen, Daniel J. Inman, Jing Lin

Department of Mechanical Engineering

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70 Citations (SciVal)

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Abstract

Numerical and experimental investigations of nonlinear bistable energy harvesters (BEHs) with asymmetric potential functions are presented under various excitations for performance enhancement. Basin of attraction under harmonic excitation indicates that asymmetric potentials in BEHs have a negative effect on the power output. Therefore, a proper bias angle is introduced to the asymmetric potential BEHs for performance enhancement. Numerical and experimental results show that the power output is actually improved in a certain bias angle range under harmonic and random excitations. Furthermore, experiments under human motion excitation demonstrate that the asymmetric potential BEHs could perfectly combine with the asymmetric motion of lower-limb to improve the performance.

Original language	English
Article number	213903
Journal	Applied Physics Letters
Volume	112
Issue number	21
DOIs	https://doi.org/10.1063/1.5027555
Publication status	Published - 21 May 2018

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.5027555

AP_Preprint.PDF
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Wang, W, Cao, J, Bowen, CR, Inman, DJ & Lin, J 2018, 'Performance enhancement of nonlinear asymmetric bistable energy harvesting from harmonic, random and human motion excitations' Applied Physics Letters, vol. 112, no. 21, 213903 and may be found at https://doi.org/10.1063/1.5027555.
Accepted author manuscript, 1.52 MB
APL1.5027555
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Appl. Phys. Lett. 112, 213903 (2018) and may be found at https://doi.org/10.1063/1.5027555.
Final published version, 2.24 MB

Cite this

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abstract = "Numerical and experimental investigations of nonlinear bistable energy harvesters (BEHs) with asymmetric potential functions are presented under various excitations for performance enhancement. Basin of attraction under harmonic excitation indicates that asymmetric potentials in BEHs have a negative effect on the power output. Therefore, a proper bias angle is introduced to the asymmetric potential BEHs for performance enhancement. Numerical and experimental results show that the power output is actually improved in a certain bias angle range under harmonic and random excitations. Furthermore, experiments under human motion excitation demonstrate that the asymmetric potential BEHs could perfectly combine with the asymmetric motion of lower-limb to improve the performance.",

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AU - Bowen, Chris R.

AU - Inman, Daniel J.

AU - Lin, Jing

PY - 2018/5/21

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Performance enhancement of nonlinear asymmetric bistable energy harvesting from harmonic, random and human motion excitations

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