Finite-Time Attitude Maneuver Control for Liquid-Filled Spacecraft with Attitude and Angular Velocity Constraints Based on Barrier Lyapunov Function

The attitude maneuver control problem for a liquid-filled spacecraft system is investigated in the presence of attitude and angular velocity constraints and external disturbance in this paper. First, the attitude dynamics model is constructed for the spacecraft with sloshing liquid. Second, during attitude maneuver, large amplitude of angular velocity is easy to stimulate the liquid slosh and even lead to instability of the system, and in the process of spacecraft maneuver, there will be constraints on the transient and steady attitude performance. Therefore, it is necessary to take attitude and angular velocity constraints into account simultaneously during attitude maneuver control. A time-varying barrier Lyapunov function and a logarithmic barrier Lyapunov function are proposed correspondingly, and a finite-time maneuver control law is designed from the barrier Lyapunov functions. Furthermore, an adaptive estimation law is designed to compensate the unknown disturbance and uncertainties in the system. Finally, simulation results are provided to show the effectiveness of the proposed control algorithms and estimation algorithms.