Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4932947
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Funding
- National Natural Science Foundation of China [51421004, 51575426]
- National Key Scientific Instrument and Equipment Development Project [2012YQ03026101]
- Program for New Century Excellent Talents in University [NCET-12-0453]
- Fundamental Research Funds for the Central Universities of China [CXTD2014001]
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A theoretical and experimental investigation into nonlinear bistable energy harvesting with time-varying potential energy is presented. The motivation for examining time-varying potentials comes from the desire to harvest energy from human motion. Time-varying potential energy function of bistable oscillator with respect to the swing angle are established to derive the governing electromechanical model for harvesting vibration energy from the swaying motion during human walking or running. Numerical simulations show good agreement with the experimental potential energy function under different swing angles. Various motion speed treadmill tests are performed to demonstrate the advantage of time-varying bistable harvesters over linear and monostable ones in harvesting energy from human motion. (C) 2015 AIP Publishing LLC.
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