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The SMDO (Sliding Mode Disturbance Observer) is introduced in optimal attitude maneuver control law for high-precision attitude control of flexible spacecraft which consists of rigid central body and flexible appendages. First, an theta-D optimal attitude maneuver control law is adopted, then an SMDO is designed based on internal model principle. Furthermore, the attitude control system stability...
A backstepping adaptive attitude tracking controller for flexible spacecraft with collocated sensor and actuator pairs is studied. Firstly, spacecraft's angular velocity is selected as virtual control vector, and a constant coefficient feedback intermediate control law is designed to stabilize the spacecraft attitude quaternion error equations; then, via backstepping control algorithm, an adaptive...
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