Disturbance observer-based performance guaranteed fault-tolerant control for multi-spacecraft formation reconfiguration with collision avoidance

• Published in: Aerospace science and technology Vol. 133; p. 108099
• Main Authors: Jia, Qingxian, Gui, Yule, Wu, Yunhua, Zhang, Chengxi
• Format: Journal Article
• Language: English
• Published: Elsevier Masson SAS 01.02.2023
• Subjects: Artificial potential function; Collision avoidance; Disturbance observer; Fault-tolerant control; Performance guaranteed control; Spacecraft formation flying; Disturbance observer; Artificial potential function; Performance guaranteed control; Fault-tolerant control; Collision avoidance; Spacecraft formation flying
• ISSN: 1270-9638; 1626-3219
• DOI: 10.1016/j.ast.2022.108099

In this study, the issue of the performance guaranteed fault-tolerant control for formation reconfiguration with collision avoidance in the multi-spacecraft system subjects to space perturbations and thruster faults is investigated. A new nonlinear iterative learning disturbance observer is constructed to accurately reconstruct the synthesized disturbance no matter it is time-varying or not. Then, an exponential artificial potential function with a simple structure and low computation requirement is designed to avoid collision between spacecrafts. A nonsingular terminal sliding mode fault-tolerant control method is explored to accomplish fault-tolerant formation reconfiguration with collision avoidance ability and prescribed robust performance. Finally, numerical simulations and comparisons are performed to validate the effectiveness and superiority of the proposed approaches.