Experimental Research on Excitation Condition and Performance of Airflow-Induced Acoustic Piezoelectric Generator
| Autor: | Jinghao Li, Hejuan Chen, Zhipeng Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Acoustics
lcsh:Mechanical engineering and machinery fuze power supply 02 engineering and technology 01 natural sciences Article 010305 fluids & plasmas Generator (circuit theory) edge tone 0203 mechanical engineering 0103 physical sciences lcsh:TJ1-1570 Electrical and Electronic Engineering Sound pressure Physics Mechanical Engineering airflow-induced acoustic Acoustic wave Power (physics) Vibration 020303 mechanical engineering & transports Electricity generation Control and Systems Engineering Fuze piezoelectric transducer Voltage |
| Zdroj: | Micromachines Volume 11 Issue 10 Micromachines, Vol 11, Iss 913, p 913 (2020) |
| ISSN: | 2072-666X |
| DOI: | 10.3390/mi11100913 |
| Popis: | This paper aims to present a novel airflow-induced acoustic piezoelectric generator that can be used to solve the problem of insufficient power supply of modern intelligent fuzes. The sound waves induced by airflow are the key to power generation performance. It is proposed that an edge tone frequency equal to the acoustic mode frequency is a sufficient condition for evoked acoustic waves, and a design idea and scheme for a universal fuze power supply is provided. We establish the vibration model of the airflow-induced acoustic piezoelectric generator. According to the model, the experimental research on the power generation performance shows that the sound pressure frequency, vibration displacement frequency, and output voltage frequency are consistent. The model provides a design idea for a vibration sensor. At the flow rate of 100.8 m/s, the output power is 45.3 mW, which is much higher than the fuze power sources such as the magnetic backseat generator. Therefore, the airflow-induced piezoelectric generator can effectively solve the problem of the modern fuze less types of power supply and low output energy. |
| Databáze: | OpenAIRE |
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