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 |
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Article number | 213903 |
Journal | Applied Physics Letters |
Volume | 112 |
Issue number | 21 |
DOIs | |
Publication status | Published - 21 May 2018 |
Funding
Support from the National Natural Science Foundation of China (Grant Nos. 51575426, 51611530547, and 51421004), Novel Energy Materials, Engineering Science and Integrated Systems (NEMESIS) (Grant No. 320963), and Fundamental Research Funds for the Central Universities of China (Grant No. xjj2016002) is acknowledged; this research was partly supported by China Scholarship Council.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)