Airfoil pit local aeroelastic vibration piezoelectric energy harvester

Abstract

The invention discloses an airfoil pit local aeroelastic vibration piezoelectric energy harvester, and relates to the field of clean energy and piezoelectric power generation. The energy harvester is composed of a base, an L-shaped clamping plate, a U-shaped baffle, a telescopic spring, a strip-shaped baffle, a 90-degree torsion spring, a linear sliding guide rail, a rotating shaft, a pit vibrator, a wing, a bearing, a bearing seat, a bearing cover and a sliding block. The energy harvester specifically comprises a moving part, a torsion part and a airfoil pit vibrator power generation part. The moving part and the twisting part achieve the pitching vibration mode of a flutter of the airfoil structure at the wind speed. The airfoil structure generates aeroelastic vibration under the excitation of wind current, such that the wall surface pits generate local aerodynamic force and inertia force effects, and thus, the pits generate local vibration, and aeroelastic vibration energy is converted into electric energy through the airfoil pit piezoelectric vibrators. The aeroelastic vibration energy generated when the airfoil-shaped structure flies in the air is converted into electric energy, and a good solution is provided for improving the cruising ability of the airfoil-shaped aircraft.

Description

Technical field [0001] The present invention relates to the field of cleaning energy and piezoelectric power generation, in particular a pneumatic elastic vibrating piezoelectric capture device for airfoil pits. Background technique [0002] In recent years, small airfound aircraft (drones) is very widely used in aerial photography, detection, reconnaissance, and rescue, and also have an important application value and strategic significance in the field of civilian and military products. It has become a hot spot for technology development at home and abroad. National research institutions are dedicated to the study, lightweight, automation, and intelligent design of small airfoil, and the continuous supply power problem of the current small airfound aircraft, and the capacity electronic equipment is a key factor in the development of the aircraft. The traditional supply mode is mainly based on the battery. To increase the battery life of the small airfoil, you have to carry more...

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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