A Piezoelectric Energy Harvester for Local Aeroelastic Vibration of Airfoil Pit

Abstract

The invention discloses a local aeroelastic vibration piezoelectric energy harvester of airfoil pits, which relates to the fields of clean energy and piezoelectric power generation. The invention consists of a base, an L-shaped clamping plate, a U-shaped baffle, a telescopic spring, a strip baffle, a 90° torsion spring, a linear sliding guide rail, a rotating shaft, a pit vibrator, a wing, a bearing, a bearing seat, and a bearing cover. And the slider is composed of three parts: the moving part, the torsion part and the airfoil pit vibrator power generation part. The moving part and the torsion part realize the pitch vibration form of the airfoil structure flutter under the wind speed. The airfoil structure generates aeroelastic vibration under the excitation of wind flow; then the wall dimples generate local aerodynamic force and inertial force, so that the dimples generate local vibration, and the aeroelastic vibration energy is converted into electrical energy through the piezoelectric vibrator of the airfoil dimples . The device converts the aeroelastic vibration energy generated when the airfoil structure flies in the air into electrical energy, and provides a good solution for improving the endurance of the airfoil aircraft.

Description

technical field [0001] The invention relates to the field of clean energy and piezoelectric power generation, in particular to a local aeroelastic vibration piezoelectric energy harvester of airfoil pits. Background technique [0002] In recent years, small airfoil vehicles (UAVs) have been widely used in aerial photography, detection, reconnaissance, rescue, etc., and also have important application value and strategic significance in the fields of civilian and military products, and have become a hot spot of scientific and technological development at home and abroad. Research institutions in various countries are committed to the research of small airfoil aircraft, and lightweight, automated and intelligent designs emerge in an endless stream. However, the current problems of endurance of small airfoil aircraft and the continuous energy supply of airborne electronic equipment are the key factors restricting the development of aircraft. The traditional energy supply method...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of the low endurance of the airfoil aircraft, the present invention provides an airfoil aircraft by fully utilizing the wing vibration energy caused by the environment during the flight according to the structural characteristics of the wing of the airfoil aircraft and the vibration characteristics of the wing during flight. The local aeroelastic vibration piezoelectric energy harvester of the wing surface pit and the technical solution to realize the independent energy supply of the airfoil aircraft, so that the originally dissipated energy can be recovered and reused

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