基于PVDF压电传感器的微型扑翼机升力特性研究

Study on the Aerodynamic Forces of Flapping Wing MAV with PVDF Sensor

采用一种新型方法测量微型扑翼机升力变化特性。在微型扑翼机机翼表面布置一矩形聚偏氟乙烯(PVDF)压电薄膜作为传感器,根据PVDF输出信号判断微型扑翼机对应的升力变化,与传统扑翼机升力变化特性实验研究相比,该方法具有简单、快捷、准确等优势。同时该文研究了微型扑翼飞行器在水平放置及迎风状态时的升力特性曲线,探讨了扑翼频率、飞行速度及扑翼的迎角对扑翼飞行升力的影响。

A new method is used to measure the change characteristics of the lift of micro flapping-wing MAV.A rectangular polyvinylidene fluoride（PVDF） film has been layout on the wing surface of miniature ornithopter as a sensor.According to the output signal of the PVDF,the lift changes of the wings of MAV are figured out.Compared PVDF data with the data of force balance;it has many obvious advantages（simple structure,fast and accurate） than the traditional ways to research the lift changes of the flapping-wing MAV.Meanwhile,the lift curve of the flapping-wing MAV in horizontal state and wind-facing state has been studied,and the factors effecting lift of the wings by changing frequency of the flapping wing,flight speed and angle of attack of the flapping-wing have also been studied.