Design and manufacture of perpendicular bi-stable cantilever for vibrational energy harvesting on the basis of stochastic resonance

15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Kawano, M.^1 ; Zhang, Y.^1 ; Zheng, R.^1 ; Nakano, K.^1 ; Kim, B.^1

Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Tokyo, Meguro

153-8505, Japan^1

关键词: Design and manufactures;    Energy Harvester;    Environmental noise;    Environmental vibrations;    Low-frequency vibration;    Stochastic resonances;    Vibrational energies;    Vibrational energy harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/660/1/012104/pdf
DOI  :  10.1088/1742-6596/660/1/012104

来源: IOP

【 摘 要 】

This paper describes extremely simple configuration of novel vibrational energy harvester, which can harness low frequency (less than 5 Hz, such as various environmental vibrations) over a broad frequency band for the first time. A design that utilizes a phenomenon called stochastic resonance can give significantly enhanced vibration mode for increasing efficiency, and simple bi-stable cantilever with tip mass installed a basement vertically fulfils the requirements for stochastic resonance. We fabricated bi-stable cantilever with tip mass and validated whether the cantilever could be used as an effective low frequency vibration energy harvester. In the experiment, when a 1 Hz periodic force and environmental noise vibration were applied, stochastic resonance occurred. The amplitude of the energy harvester increased over tenfold (over 30 mm).