Abstract
When a xed regulator is used to stabilize a desired state trajectory (guidance law), large initial tracking errors can lead to input saturation,which can result in performance deterioration. A method to modify the guidance law for recovering state-trajectory tracking (without violating input and state constraints) is presented. Although it may be feasible to nd such a satisfactory recovery guidance maneuver for a given initial tracking error, online development of recovery guidance maneuvers may not be computationally tractable. A technique is developed to use precomputed recovery guidancemaneuvers (precomputed for a nite set of initial tracking errors) to generate recovery guidance maneuvers for other initial errors. The technique is applied to an illustrative example with a rate-limited servoactuator, and simulation results are presented.
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