Projeto de um sistema de voo automático para veículos aéreos não tripulados em fase de voo de cruzeiro

Abstract

This paper presents has as objective to design of an autopilot for an unmanned aerial vehicle (UAV) in phase of cruise flight, that is able to provide pilotage support and improvement of the aircraft performance, both in as well as severe weather conditions including rain, gust and cross winds. Also, have a low cost to implement in future applications. First, the mathematical modeling of the aircraft’s dynamic system was performed, which includes the three axes of stability, namely longitudinal, lateral and directional, using Matlab as support. Then, the proportional–integral–derivative (PID) controllers were designed using the Ziegler-Nichols criterion and the root-locus method, so that, the system meets the design control requirements such as overshoot, peak time and damping. After, the design of all controllers, the chosen aircraft was designed in the X-Plane software using the Plane Maker tool, where all its physical measurements and aerodynamic, structural, stability, control and performance were applied. Lastly, a network connection was established using the UDP protocol between the Matlab and X-Plane software, so that the project could be validated by software-in-the-loop simulation which is obtained in real time the response of the aircraft by applying each controller in a virtual environment, but very close to reality.