期刊
IEEE-ASME TRANSACTIONS ON MECHATRONICS
卷 21, 期 3, 页码 1787-1791出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMECH.2015.2459014
关键词
Energy harvesting; multidirectional; nonlinear vibration; piezoelectric
类别
资金
- Natural Science and Engineering Research Council of Canada
- State Key Program of National Natural Science of China [11232009]
We propose a new concept for harvesting vibration energy from multiple directions. Our approach effectively exploits the nonlinear vibration of a doubly clamped elastic rod, converting and amplifying excitations to compressive loads in piezoelectric materials. The proposed multidirectional compressive-mode piezoelectric energy harvester (MC-PEH) is capable of isotropically harnessing vibration energy from any angle in a plane. Meanwhile, the MC-PEH demonstrates a high-voltage output and a wide working bandwidth, along with the distinct softening nonlinear phenomena. Theoretical analysis and experimental testing are performed and exhibit good agreement over a range of excitation frequencies. This study enhances the practicability and adaptability of using energy harvesters in a complex environment.
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