Hybrid Control Strategy for Attitude Stabilization of an Underactuated Spacecraft with Two Moving Mass

Motivated by the attitude control of an under- actuated spacecraft with two moving mass, we consider the stabilization problem of nonlinear systems via hybrid control strategy. First, the spacecraft is modeled based on principle of conservation of momentum and characteristic of model is analyzed. Hybrid control architecture for attitude system is described and feedback controllers are constructed by switching between several feedback functions which are selected to accomplish a sequence of spacecraft maneuvers.