Attitude maneuvering and vibration damping of flexible spacecraft via robust adaptive backstepping technique

A dual-stages robust design method was concerned for the rotational maneuver and vibration stabilization of a flexible spacecraft. Based on the backstepping-based adaptive technique, a new control law for attitude maneuvering was derived to control the attitude motion of spacecraft, in which the asymptotic stability is guaranteed by using Lyapunov analysis. Furthermore, for actively suppressing the induced vibration, strain rate feedback control compensator was designed by using piezoelectric materials as additional sensors and actuators. Numerical simulations were performed to show that both maneuvering and vibration suppression can be accomplished effectively.