Adaptive adjustable performance function based direct prescribed performance control for spacecraft flying around mission

The control for spacecraft flying around mission is investigated in this paper based on the prescribed performance control (PPC). Considering the challenges in the traditional PPC framework, we design an adaptive adjustable performance function, which can self-adjust the performance requirement according to the saturation of the control input. Besides, a combined switching controller is designed and the controller behaves as a PPC in the convergence stage, and gradually switches to a nonlinear controller after entering a steady state, which can avoid the over-control problem caused by high-gain PPC after entering the steady state. Finally, the numerical simulations illustrate the effectiveness of the proposed control method.