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

[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.

[发布机构] Nanjing University of Aeronautics and Astronautics, Nanjing; 210016, China^1

[效力级别] 能源学

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