复杂约束下的挠性航天器姿态参考管理控制

This paper addresses the explicit reference governor and modal observer based attitude reorientation problem. First, the kinematics and dynamics of the spacecraft are established by using the modified Rodrigues parameters, and the control constraints and angular velocity constraints are analyzed. Then, a constrained flexible spacecraft attitude reorientation control algorithm based on explicit reference governor is proposed. Since the modal displacement cannot be directly measured and the modal observer is designed in the inner layer, the modal displacements observed are used as input to the inner unconstrained controller. The navigation layer is utilized to manipulate the reference state to enforcing constraints satisfaction. By constructing the Lyapunov function, the closed-loop stability of the explicit reference governor based flexible spacecraft attitude control algorithm is strictly proved. Finally, the simulation results further verify the constraint processing effect and vibration suppression ability of the proposed attitude control algorithm.