Abstract
This paper is devoted to the finite-time coordination control problem of 6DOF spacecraft formation with directed networks in the presence of external disturbances, and a distributed control algorithm using nonsingular terminal sliding mode (NTSM) is proposed. Based on Lyapunov methods, it is proved that all the spacecrafts achieve formation flying in finite time, which means the states of all the followers simultaneously converge to the states of the virtual leader. Simulation results are provided to validate the effectiveness of the theoretical analysis.
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