Optimization of the Air-Flow Induced Acoustic Excitation Parameters in Jet-Resonant Cavity of Piezoelectric Generator

Abstract

In order to improve the power generation performance of air-flow induced acoustic piezoelectric generator, the influence of structural parameters of air-flow induced acoustic excitation mechanism on acoustic vibration amplitude is analyzed by orthogonal experiment. The results show that the distance from the nozzle to the wedge has the greatest influence on the amplitude, followed by the length of the cavity and the annulus. The output power of the air-flow acoustic piezoelectric generator with optimized parameters is significantly improved and has a large power density.