Disturbance observer-based finite-time coordinated control for spacecraft formation flying with event-triggered communication

• Published in: Nonlinear dynamics Vol. 111; no. 15; pp. 14213 - 14230
• Main Authors: Di, Fuqiang, Li, Aijun, Guo, Yong, Liu, Bojian, Wang, Changqing
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.08.2023; Springer Nature B.V
• Subjects: Actuators; Adaptive control; Adaptive technology; Attitudes; Automotive Engineering; Classical Mechanics; Closed loops; Communication channels; Control; Control algorithms; Controllers; Design; Disturbance observers; Dynamical Systems; Energy consumption; Engineering; Feedback control; Formation flying; Hyperbolic functions; Mechanical Engineering; Original Paper; Spacecraft; Upper bounds; Vibration; Limited communication; Disturbance observer; Spacecraft formation flying; Event-triggered strategy
• ISSN: 0924-090X; 1573-269X
• DOI: 10.1007/s11071-023-08587-4

This paper investigates a finite-time coordinated controller for spacecraft formation flying subject to external disturbances and limited communication resources. An event-triggered strategy is adopted to reduce the communication between disturbance observer and controller, between controller and actuator, and between neighboring spacecraft, simultaneously, which is more significant for coordinated control. To compensate for the external disturbances, a hyperbolic tangent function-based adaptive finite-time disturbance observer is established without the advanced knowledge of the upper bound of the derivative of the disturbance. The designed disturbance observer and controller are integrated through event-triggered strategy. The stabilities of the closed-loop system can be verified by the Lyapunov theorem without applying the separation principle. Simulation studies are provided to prove the effectiveness of the proposed control scheme.