Robust maneuver control with disturbance attenuation for flexible spacecraft

Abstract

Disturbance attenuation and model parametric uncertainties must be solved in large angle attitude maneuvering control for flexible spacecraft. A robust attitude maneuvering controller with disturbance attenuation inspired by the model of cell membrane discharge is proposed for flexible spacecraft, considering external disturbances and parametric uncertainties. The control strategy is designed to make the closed-loop system to be able to suppress interference and to be globally asymptotically stable. Also, it is considered particularly to solve the problem of jump of control quantity which will make the pointing accuracy and stability become poor in large angle maneuver of flexible spacecraft. When the external disturbances and the estimate errors of parametric uncertainties are bounded, the ability of disturbance attenuation and the stability of the controller proposed are proved through Lyapunov analysis. The simulation results demonstrate the effectiveness of the robust controller proposed.