Quaternion-based indirect adaptive fuzzy predictive control for attitude tracking of satellites

An indirect adaptive fuzzy predictive control method is presented for attitude tracking of satellites with model uncertainty and external disturbances in this paper. Firstly, the satellite attitude tracking error equation is formulated with quaternion, and a nonlinear predictive control law for attitude error quaternion model of satellites is derived. Then, the uncertain section in predictive control law from system model uncertainties are approximated and compensated by constructed adaptive fuzzy logic systems, respectively. Finally, it is proved that the proposed controller can force the tracking error to converge to small neighborhood of origin. Simulation results show the satisfied control accuracy and robustness of the proposed method.