Robust Tracking Control for A Quadrotor UAV via DOBC Approach

The robust tracking control scheme is proposed for quadrotor unmanned aerial vehicle (UAV) with perturbation parameters and external disturbances. Firstly, the dynamic model of quadrotor UAV is decoupled into two subsystems, which are outer loop position control system and the inner loop angle control system, respectively. Secondly, by using the interval matrices to describe the perturbation parameters, the considered control problem is transformed into robust control with uncertainties. Based on these, an effective tracking composite control strategy is proposed by combining disturbance observer control (DOBC) with H-infinity control. Finally, the simulation results show the effectiveness of the proposed method.