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In this paper, a tri-rotor aircraft is designed, which can vertically take off and land, and moreover fly forward with a high speed. Two fixed wings are added to the tri-rotor aircraft, therefore, the ability of high-speed forward flight is guaranteed. A controller is presented using back-stepping technique to achieve mode transition control of the aircraft. Finally, the theoretical result is confirmed...
For the nonlinear and open-loop unstable characteristics of the small helicopter, autonomous flight control is a challenging problem. In order to reduce the complexity of the helicopter autonomous control, this paper constructs an indoor autonomous flight control platform for a small coaxial helicopter ESky LAMA4, which is convenient for data collection, data analysis and control law design. Firstly,...
In this paper we consider the flight-trajectory tracking problem of an input-disturbed non-minimum phase vertical takeoff and landing (VTOL) aircraft with delayed attitude measurements. By applying the first-order Pade?? approximation method to deal with the time delays, the problem is reduced to the output tracking of a new high-order non-minimum phase system without delay, whose dynamics are then...
In this paper a quadrotor aircraft is developed with the signals of attitude angle and angular rate being filtered by using frequency analysis. A PD sliding mode controller is designed to stabilize the attitude and position while a tracking-differentiator is employed to obtain the estimate of the required velocity. Experiments are conducted to demonstrate the developed quadrotor can be appropriately...
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