Investigation of VTOL flight stabilizer

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Supervisor:
Dr. Stumpf Péter Pál
Department of Automation and Applied Informatics

The aim of the final project is to examine the flight stabilizer of an aircraft that can take off and land vertically and the possibilities of the implementation.

I’m using the model of an airplane which has three rotors. One in front of each wings which can tilt forward for the cruise mode and one at the tale which tilt laterally to stabilize the aircraft.

In the report I’m focusing on stabilizing the airplane in hover mode. For input I use a normal RC controller, which gives velocity signals to the control loop.

The inputs of the mathematical model are the angular velocities of the rotors and the rear rotor tilt angle, so the controller is computing these values. The outputs of the system in the simulation are angular and space position vectors with respect to the ground.

I used the aircraft’s mathematical model for designing the controller, so for a result I got a nonlinear controller with a normal proportional gain.

In the realized aircraft my feedbacks will be the signals of gyroscopic and acceleration sensors, so to use these signal in the controller some modifications on them would be necessary.

To measure the quality of the mathematical model I ran some simulations on the model in MATLAB Simulink.

The theory isn’t ready for the implementation yet, but I want to work on it to make it suitable for many aircrafts of this type.

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