| In the last50years, UAV’s are widely using in military&civil, especially UAV were usedin modem war. And the research and development on UAV’s have been fast and faster.Durning the whole flight, the take-off&landing is the most difficult. So many countrieswere researching in this field. How to safety take-off and landing in flight task is a crucialtechnique in the research of UAVs. Especially, the automatic take-off and automatic landingsystem becomes more important.In this paper, we introduce the automatic take-off&landing methods to you. And wedesigning the control laws of the automatic take-off&landing system. It is using the nosewheel string, difference brake of main wheels and the rudder to control the lateral deviationcorrection. The robustness of the designed control system to the atmospheric turbulence isverified by simulation. Finally, we have done the taxing test, and got the parameter of thecontrol law.This system was used in the UAV system successfully. |