Vibration Frequency Estimation of Airflow-induced Vibration Piezoelectric Generator

For the problem of that the existing empirical formula is not suitable for estimating the vibration frequency of small airflowinduced vibration piezoelectric generator,an experimental analysis and estimating method of the vibration frequency was presented.The method was suitable for estimating the vibration frequency of short resonator by correcting the existing empirical formula.The result showed that the length of resonator was the main factor impacting on the vibration frequency,and the frequency decreased with the length increasing,presenting an inverse relationship,and the space had less effect on the frequency,and the frequency slightly decreased with the space increasing.The error between theoretical value accorded to the corrected empirical formula and experimental value was small,which could be an effective method of estimating the vibration frequency.