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A tunable rotational energy harvester for low frequency vibration

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4 Author(s)
Jang, Seon-Jun ; Energy Mechanics Centre, Korea Institute of Science and Technology, Seoul 136-791, South Korea ; Kim, In-Ho ; Jung, Hyung-Jo ; Lee, Yoon-Pyo

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The tunable single-degree-of-freedom rotational energy harvester is proposed. The device is the combination of the rotational energy harvester and the suspended weight. Thus, it can harvest the electrical power from the translational base excitation associated with low frequency and large amplitude. Further, its natural frequency can be changeable by manipulating the size of the reel (i.e., geometrical tunability). The characteristics of the proposed device are investigated through numerical simulation and experimental test.

Published in:

Applied Physics Letters  (Volume:99 ,  Issue: 13 )