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A robust control method for close formation of aerial-refueling UAVs
Received date: 2022-12-23
Revised date: 2023-02-13
Accepted date: 2023-03-10
Online published: 2023-03-10
Supported by
Natural Science Foundation of Sichuan Province(2023NSFSC1428)
This paper proposes a distributed robust formation control method based on adaptive disturbance observers with the barrier function for the robust control problem of aerial-refueling UAV close formation systems. A simplified model of the second-order multi-agent system with unmatched and matched disturbances is constructed by transforming the fixed-wing UAV outer-loop dynamics model， and the adaptive disturbance observer of the corresponding channel is designed based on the barrier function. The consensus error function is defined by using the neighboring aircraft state information， and on this basis， distributed robust controllers for aerial-refueling UAV close formation systems are developed to achieve the ideal heterogeneous UAV formation tracking control performance based on the communication topology of the formation system and the introduction of disturbance compensation mechanism. According to the Lyapunov stability theory， the stability and convergence of the closed-loop system are analyzed. Finally， the proposed scheme is verified by implementing into a formation system consisting of one refueling aircraft and two fuel-receiving aircraft of different types for numerical simulation. The simulation results are consistent with the theoretical analysis， which confirms the effectiveness of the designed disturbance observer and controller.
Xinyu ZHANG , Siyu XIE , Yang TAO , Gun LI . A robust control method for close formation of aerial-refueling UAVs[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(20) : 628425 -628425 . DOI: 10.7527/S1000-6893.2023.28425
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