Discrete-Time Fractional-Order Cooperative Control of Multi-Spacecraft Based on Fully Actuated System Approach and Disturbance Observer

In this paper, a discrete-time fractional-order cooperative control problem is studied for multi-spacecraft based on fully actuated system approach and disturbance observer. Firstly, a discrete-time disturbance observer is employed to estimate the adverse disturbances. Secondly, the fully actuated discrete-time system is transformed, and a discrete-time fractional-order cooperative controller is constructed by combining the designed disturbance observer. Finally, the simulation analysis is given to demonstrate the effectiveness of the developed control method.