ADP-Based Prescribed Performance Attitude Tracking Control for Rigid Spacecraft

This paper proposes an adaptive dynamic programming (ADP)-based prescribed performance controller for rigid spacecraft attitude tracking control subject to cost optimizing. As a stepping stone, the modified Rodrigues Parameters (MRPs) are employed to characterize the relative attitude dynamics. A state transformation method is used to transform the constrained dynamics to an unconstrained dynamics by the log-type function. Then, an ADP algorithm is developed to deal with the Hamilton-Jacobi-Bellman equation of optimal control problem. The convergence and stability are analyzed by the Lyapunov-based method. Finally, the effectiveness of the proposed scheme is demonstrated by numerical simulation.