周铄, 刘周龙, 郑友成, et al. Mechanism, FEM Analysis and Experimental Verification of Energy Harvesting from Ultrasonic Vibration Environments[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(11): 1961-1971.
周铄, 刘周龙, 郑友成, et al. Mechanism, FEM Analysis and Experimental Verification of Energy Harvesting from Ultrasonic Vibration Environments[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(11): 1961-1971.DOI: 10.13433/j.cnki.1003-8728.20230076.
In order to study the ultrasonic vibration generated by industrial instruments and its energy harvesting and conversion mechanism
a sandwich ring-shaped ultrasonic transducer with energy harvesting and conversion functions was designed. The finite element model (FEM) of the transducer is established in ANSYS to analyze the influences of the structural parameters on the vibration characteristics and energy harvesting characteristics. The mechanism model method of ultrasonic vibration energy harvesting was then derived for simulations
whose accuracy was verified by experiments. The results show that when the excitation voltage has amplitude 67 V and frequency 35.2 kHz
the output voltages amplitude of each sector of the harvesting PZT and the solitary pole PZT reach 39 V and 34.4 V
respectively
and the corresponding maximum output powers reach 113 mW and 82.4 mW. The harvesting output power meets the power supplying demand of low-power electronic devices (such as LED lights). The research results also verify the feasibility of ultrasonic vibration energy harvesting.