International Journal of Control, Automation and Systems 2023; 21(2): 350-358
Published online January 30, 2023
https://doi.org/10.1007/s12555-021-0671-2
© The International Journal of Control, Automation, and Systems
This paper studies the prescribed-time spacecraft formation flying problem under known and unknown external disturbance. The coupled 6-degrees-of-freedom relative kinematics and dynamics for spacecraft are modeled by using exponential coordinates of SE(3). With the help of the linear time-varying Lyapunov inequality based prescribed-time stability theorem, a novel global adaptive prescribed-time time-varying high-gain control law is designed by backstepping. It is shown that the designed controller is bounded. Numerical simulations verify the effectiveness of the proposed control method.
Keywords Adaptive control, nonlinear feedback, prescribed-time control, spacecraft formation flying, timevarying feedback.
International Journal of Control, Automation and Systems 2023; 21(2): 350-358
Published online February 1, 2023 https://doi.org/10.1007/s12555-021-0671-2
Copyright © The International Journal of Control, Automation, and Systems.
Li Chen, Yongyan Sun, Xiaowei Shao*, Junli Chen, and Dexin Zhang
Shanghai JiaoTong University
This paper studies the prescribed-time spacecraft formation flying problem under known and unknown external disturbance. The coupled 6-degrees-of-freedom relative kinematics and dynamics for spacecraft are modeled by using exponential coordinates of SE(3). With the help of the linear time-varying Lyapunov inequality based prescribed-time stability theorem, a novel global adaptive prescribed-time time-varying high-gain control law is designed by backstepping. It is shown that the designed controller is bounded. Numerical simulations verify the effectiveness of the proposed control method.
Keywords: Adaptive control, nonlinear feedback, prescribed-time control, spacecraft formation flying, timevarying feedback.
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