Autonomous Aerial Refueling Formation Flight Control Based on Finite-time Control under Wind Field Disturbance

In order to solve the problem that the aerial refueling formation has low accuracy and is greatly affected by wind disturbance, this paper proposes a finite-time stable formation control method based on three-dimensional guidance. First, a high-accuracy formation control method is proposed, which can eliminate the forward, lateral and longitudinal directions errors by controlling the track angle. Secondly, a formation controller based on finite-time control to resist wind field interference is designed. Finally, it is verified that the fast terminal sliding surface converge in a finite time on the basis of Lyapunov's stability theory. The simulation results show that the formation method combining three-dimensional guidance law and fast terminal sliding mode control can not only ensure that the formation distance error is less than 0.5m, but also improve the robustness of the system to reach the desired state quickly.