Robust parametric design method for autonomous rendezvous of spacecrafts on elliptical orbit

A robust parametric design method for spacecraft autonomous rendezvous in elliptical orbit without orbit information is developed. Lawden equation with time-varying parameters is used to describe the relative motion of the chaser and the target. With the assumption that the time-varying parameters are unavailable,all the variable parameters in the equation are classified and the elliptical rendezvous model with uncertainties is given,then the eigenstructure assignment approach and the model reference theory based on the robust parameterized method are employed to design robust control law for autonomous rendezvous of spacecrafts on elliptical orbit. To simplify the autonomous rendezvous control system,a constant feedback controller,which stabilizes the system and does not vary with the time-varying,is proposed. Simulation results indicate that the proposed control law can realize autonomous rendezvous in the elliptical orbit.