Uav Automatic Landing Control System Design And Realization Of Research,

The research and development on UAVs have been booming all over the world recently, because of UAVs' widely use in military and civil field, especially its' unique role in modern war. Take-off and landing are a complex phase in the whole flight process. similarly, UAV's take-off and landing safely after completing flight task is also a crucial technique in the research of UAVs, so the design of automatic take-off and automatic landing system becomes very important.The development history of UAVs and its' kinds of launch and recovery methods are introduced in this paper, and two design schemes of the automatic landing system of UAVs are studied. According to the comparison between them and recent conditions, a scheme is chosen to design a suitable automatic landing system based on the models in ground run and landing. The longitudinal and lateral control laws of UAVs' ground run are designed separately by using pitch angle control and driving front-wheel. And the longitudinal and lateral control laws of landing are designed separately by adopting glide beam guiding system and auto leveling control system and lateral beam guiding system. Finally, the robustness of the designed control system to the atmospheric turbulence is verified by simulation in MATLAB/SIMULINK.A scheme for automatic take-off and automatic landing control systems are obtained in this design. The simulation results show that the designed control system is satisfactory. And it is believed to give some valuable help to the development of the future take-off and landing technique of UAVs in China.