Robust Controller for Constrained Relative Motion Maneuvering with Disturbance Rejection

The development and demonstration in simulations of a computationally fast control framework for robust spacecraft relative motion maneuvering with constraints is presented. This framework is capable of handling bounded disturbances (e.g. thrust errors, air drag, solar pressure, etc.) while guaranteeing that specified constraints are satisfied and the target set is reached for all disturbances with values satisfying specified bounds. The maneuver computations reduce to solving a quadratic programming problem (or a linear programming problem for a less flexible formulation) at the initial time instant to find a feasible maneuver path, and then generating feedback corrections along the maneuver path based on a simple constant gain linear feedback. Simulation results for two and three dimensional spacecraft relative motion are given.

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