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Dual resonant structure for energy harvesting from random vibration sources at low frequency

2016; American Institute of Physics; Volume: 6; Issue: 1 Linguagem: Inglês

10.1063/1.4941353

2158-3226

Shanshan Li, Zhuoteng Peng, Zhang Ai, Fei Wang,

Advanced Sensor and Energy Harvesting Materials

We introduce a design with dual resonant structure which can harvest energy from random vibration sources at low frequency range. The dual resonant structure consists of two spring-mass subsystems with different frequency responses, which exhibit strong coupling and broad bandwidth when the two masses collide with each other. Experiments with piezoelectric elements show that the energy harvesting device with dual resonant structure can generate higher power output than the sum of the two separate devices from random vibration sources.