Abstract:

While an unmanned aerial vehicle(UAV) with vertical take off and landing capability is landing onto a ground, a horizontal positioning error occurs between actual landing point and target landing point. This error occurs because of vibration on UAV chasis during flight and low GPS accuracy. In this study, control of an automatic assistive landing system that moves according to the horizontal positioning error that UAV made during its landing was carried out. A stereo camera system with two digital cameras were placed onto a moving platform that UAV lands. Cameras were used to detect actual position of the landing UAV. Real time position of landing UAV was computed by using OpenCV library added into Visual Studio. The calculated position of the landing UAV was defined as target position for two DC motors of moving platform that has horizontal motion capability. The tests of this system were performed in real and indoor conditions. Genetic algorithm (GA) and Particle Swarm Optimization(PSO) algorithm were used to calculate the coefficients of controllers that were defined as Proportional-Integral-Derivative(PID) controllers. Developed controllers control two DC motors of the moving plate of the system. Success of the controllers were compared in table form.

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