FTCESO-Based Prescribed Time Control for Satellite Formation Flying

In this paper, a prescribed time control method based on finite-time convergent extended state observer (FTCESO) for satellite formation flying with multiple disturbances and input constraints is investigated. First, the FTCESO is developed to estimate the external disturbance and system nonlinear terms with high precision. Then a backstepping-based prescribed time controller is designed to maintain the specific configuration of follower satellites and the prescribed time convergence is theoretically proved. Finally, numerical simulations are performed to demonstrate the effectiveness of the proposed method.