Robust disturbance observer-based fast maneuver method for attitude control of optical remote sensing satellites

This paper aims at developing a novel fast attitude maneuver framework for optical remote sensing satellites subject to multiple uncertainties and limited control energy. The proposed framework relies on a two-layer approach, where the first layer provides the agile attitude planning which enforces the satisfaction of the con-trol energy constraint, whereas the second layer, named the special fast maneuver controller, ensures the high -precision attitude tracking by suitably manipulating the agile attitude planning information. In addition, a novel disturbance observer is introduced into the scenario to enhance the robustness of the proposed fast maneuver controller against multiple uncertainties. The uniform ultimate boundedness of the proposed method is analyzed rigorously with the Lyapunov theory. To demonstrate the effectiveness, the proposed method is applied to the fast attitude maneuver of both simulated and real Jilin-1 GaoFen-02 satellite, which shows excellent control performance despite multiple uncertainties and limited control energy.