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Approach and landing UAV / ground roll control and simulation

Author: HuHao
Tutor: QinKaiYu
School: University of Electronic Science and Technology
Course: Measuring Technology and Instruments
Keywords: UAV(Unmanned Aircraft Vehicle) Flight control Approach Ground motion Landing gear
CLC: V249.1
Type: Master's thesis
Year: 2011
Downloads: 210
Quote: 0
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Abstract


Unmanned Aircraft Vehicle(UAV) is being widely used in the fields of military and civilian, its advantages of low cost, high security and short development cycles had become increasingly prominent, and it could do many tasks which manned aircraft couldn’t. So the UAV has a great prospect for development. When many variety of UAV were emerging, some accidents for recovery had also become. The safe landing became one of the key technologies for the UAV development.In the dissertation, a certain type of UAV was taked as the research object, the six degrees of freedom nonlinear mathematical model was established by MATLAB. The approach trajectory was designed to meet the requirements of the landing. And the PID flight controller was designed by a detailed analysis of the dynamics of the UAV. In the whole flight envelope, some simulations by adding the winds to prove the controller and the track.Based on the analysis of the strength pressed on the UAV, a ground-taxiing mathematical model was established. Model fully consider the impact of UAV attitude to the landing gear, and the counteractive of the compression of the landing gear, established the calculation equations to the tire longitudinal and lateral friction force, also considered the impact of the nose wheel steering and the main wheel brake on the movement characteristics. Simulation results show that the model accurately reflects the movement characteristics of UAV during taxiing.In the last, In the MATLAB/SIMULINK simulation environment, the approach and landing simulation was made. The results proved the guidance strategy and control strategy was reasonable and also proved the robustness of the controller was good.

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CLC: > Aviation, aerospace > Aviation > Aircraft instrumentation,avionics, flight control and navigation > Flight control system and navigation > Flight control
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