Interfered Fluid Dynamical Controller for Spacecraft Rendezvous with Collision-Free

To solve the problem of obstacle avoidance in the process of spacecraft rendezvous and improve the safety of the maneuver, a new control methodology based on interfered fluid dynamical system (IFDS) and finite-time sliding mode control (SMC) is proposed. First, combining the basic principles of IFDS and artificial potential function (APF), a simple feedback control method is designed, which can be compatible with different initial speeds and converge to the target state. Then, considering the influence of obstacles and velocity error to achieve a sliding surface and design the control law. Finally, the stability of the control law is proved by using Lyapunov stability theory. The simulation results show that the new methodology has the ability to avoid obstacles in the approaching process and has good performance.