Adaptive robust attitude control for flexible spacecraft with control moment gyroscopes

摘要

To deal with bounded parametric uncertainties and external disturbances existed in a flexible spacecraft with control moment gyroscopes as actuator, an adaptive robust attitude control algorithm is presented in this paper. With the proposed control law, robust stability is achieved, as well as system chattering is weakened. A steering law with modified robust coefficient is also proposed in this paper. Stability of the closed-loop control system is proved via Lyapunov technique. Numerical simulations are included to demonstrate the effectiveness of the proposed approach for the flexible spacecraft attitude maneuver with control moment gyroscopes.