Robust Adaptive Control Method for Inter-satellite Linkage Antenna Acquisition and Tracking

A robust adaptive controller is presented for the control system of inter-satellite linkage (ISL) antenna acquisition and tracking, which faces with the uncertainties of un-modeled dynamics and unbounded disturbance and the control input constraints. The stability is proved by using Lyapunov stabilization theory. The simulation results show that the robust adaptive controller can satisfy all the design requirements, especially the control accuracy is amazingly high contrast to the required accuracy. Furthermore, robust stability of the controller for un-modeled dynamics, uncertainties of parameters and the external disturbance was verified.