Nonlinear digital and pulse-width control at approaching a space robot with a geostationary satellite

Abstract

The problems of approaching a space robot to an information geostationary satellite are considered when the robot's attitude and orbit control system uses an electric propulsion unit, a propulsion system based on eight electro-catalytic reaction engines with pulse-width modulation of their thrust, and a gyroscopic moment cluster based on four single gimbal control moment gyroscopes (gyrodines). Numerical results are presented that demonstrate the effectiveness of the developed discrete guidance and control algorithms.