INDIRECT ADAPTIVE FUZZY PREDICTIVE CONTROL FOR ATTITUDE TRACKING OF SATELLITES

An indirect adaptive fuzzy generalized predictive tracking control strategy for satellite attitude systems with modeling uncertainty and unknown external disturbances is presented in this paper.First,a nonlinear generalized predictive control law is designed based on the satellite attitude dynamical model;then,adaptive fuzzy systems are constructed to approximate model uncertainties in the predictive control law such that the obtained control algorithm can be implemented.It is proved that by using the proposed controller,satellite can track the desired attitude trajectory and the tracking error converges to a small neighborhood of the origin.Simulation results show the effectiveness of the method.