A frequency up-converting harvester based on internal resonance in 2-DOF nonlinear systems

16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Wu, Yipeng^1 ; Qiu, Jinhao^1 ; Ji, Hongli^1

Nanjing University of Aeronautics and Astronautics, Nanjing

210016, China^1

关键词: Duffing system;    Experimental testing;    Frequency up conversion;    Internal resonance;    Piezoelectric energy harvesters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/773/1/012092/pdf
DOI  :  10.1088/1742-6596/773/1/012092

来源: IOP

【 摘 要 】

This paper reports the design and experimental testing of a novel frequency up- converting piezoelectric energy harvester. The harvester is firstly approximated as a 2-degree- of-freedom cubic nonlinear system instead of the general Duffing systems. A 1:3 internal resonance innovatively applied in the frequency up-conversion approach is thoroughly investigated. Finally, the theoretical dynamic model confirmed by the experimental results clearly shows the effect of the frequency up-conversion.