Fuzzy supervisory backstepping controller for stabilization of quadrotor unmanned aerial vehicle

In this paper, a fuzzy supervisory backstepping controller (FSBC) is designed for the altitude and attitude stabilization of quadrotor unmanned aerial vehicle (UAV). The designed controller consists of a backstepping controller which can automatically select its parameters, on-line by a fuzzy supervisory mechanism. The stability criterion for the stabilization of the quadrotor is proven by the Lyapunov theorem. Numerical simulations using the dynamic model of a four degree of freedom (DOF) quadrotor UAV show the effectiveness of the approach. Besides, the simulation results indicate that the proposed design techniques can stabilize the quadrotor UAV with better performance than established linear design techniques.