Finite-time attitude regulation control for a rigid spacecraft under input saturation

The problem of attitude regulation for a rigid spacecraft under input saturation is studied in this paper. Based on the technique of finite-time control and the model structural features, a novel finite-time attitude controller is proposed. The bound of a proposed finite-time controller can be adjusted to any small level to accommodate the actuation bound in practical implementation. A simulation example is given to demonstrate the efficiency of the proposed method.