Research On UAV Autonomous Charging System Based On Radio Energy Transmission Technology

In recent years,the level of actual combat training has continued to increase,and combat training has gradually evolved to the level of full process,full elements,integration,and informatization.The army combat system has focused on improving air cruise and surveillance capabilities in accordance with the principle of "air-ground integration".During this process,the drone needs to perform long-distance,long-term cruise reconnaissance missions,which puts higher requirements on the maneuverability and sustainable flight capabilities of the drone,and requires multiple charging methods.Improve the endurance of drones.In order to solve the problems faced by improving the combat capability of drones under actual combat conditions,this article conducts in-depth research on autonomous charging systems for drones.The system includes autonomous landing modules for drones,precise positioning modules for drones,and wireless power transmission technology.The research work of the charging module includes:(1)A method for autonomous landing of UAV based on image navigation is proposed.In order to ensure that the drone can land smoothly on the charging pile platform,a landing beacon is designed,a visual navigation coordinate system is established,and beacon features are extracted based on image processing methods to guide the drone to land.Aiming at the landing stability of the drone,the autonomous landing system adopted the strategy of remote control and program control to design the hardware of the system,including the design of the follower legs,the selection of the actuator,the installation of the four-rotor platform,and the system.The circuit design of the module,etc.,and the relevant test software for the autonomous landing system was written.(2)A method for precise positioning of UAV based on perspective transformation and laser sensor scanning is proposed.In order to solve the problem that the drone cannot be completely aligned with the charging module of the charging platform after landing,firstly,based on the principle of perspective transformation,the camera first performs coarse positioning of the drone coordinates,and then uses the laser sensing scanning positioning algorithm to position the drone.The aircraft performs precise positioning,and finally uses a two-axis sliding platform combined with a charging efficiency self-test module to achieve adaptive and precise alignment with the drone to ensure that the system has high charging efficiency.(3)The test and verification environment for the autonomous charging system of the drone is set up.By comparing and analyzing several major wireless energy transmission methods,magnetic resonance coupled wireless energy transmission technology was selected for the autonomous charging system of the drone.Tests were performed on the smoothness,autonomous positioning module and wireless charging module,and the test results were analyzed.The test results show that the research results of the autonomous charging system of the UAV can adapt to the requirements of the current combat system of the UAV on the endurance of the UAV,and provide technical support for the future use of UAVs to actually perform combat tasks.