Combined adaptive autopilot for an UAV flight control

The combined adaptive control (CAC) law for an autopilot of the unmanned aerial vehicle (UAV) attitude control is considered. The adaptive algorithm includes the variable-structure controller with forced sliding motion, parametric identification algorithm and the parallel feedforward compensator. The adaptation algorithm provides the prescribed dynamic properties of the attitude control system for various flight conditions of the UAV. The simulation results for nonlinear UAV dynamics model are presented.