Position control for a VTOL-type UAV by tilting some of four rotors

In recent years, unmanned aerial vehicles are being expected to be used for the vegetational observation and the information collection of disaster sites into which human cannot enter. In this research, it aims at proposing a VTOL-type UAV that has a fixed-wing and four tiltable rotors and controlling it. Such a UAV has advantages, compared to both rotorcrafts with fixed rotors and fixed-wing aircrafts. This paper derives a dynamical model for the VTOL-type UAV and designs a controller from the derived model. The effectiveness of the designed controller is verified by simulations.