Abstract This work examines the closed-loop deployment of spacecraft servicing modules onto an uncontrolled bundle of assembly components as a method of gaining custody during the in-space assembly process. Minimum energy, low-thrust relative trajectories are generated using indirect optimal control on linear dynamics over a finite time search horizon. A line search solves for the minimum energy solution in the closed subset that satisfies a keep out zone constraint. A trajectory tracking linear quadratic regulator is used in conjunction with an extended Kalman filter to closed-loop maneuver the spacecraft under nonlinear relative orbital motion dynamics. Bearing angles, range, and range rate measurements are assumed available. Launch Delta V's from the servicer spacecraft's deployment of a module and the Delta V's seen in the relative frame upon impact on the client are included, and their effect on covariance due to impact site uncertainty is investigated. Discussions regarding these GNC elements' importance within the context of the manufacturing/assembly process are included.

Ian Down

David van Wijk

Category	Quartile
工程技术	3
工程技术, 工程机械	3
工程技术, 工程制造	4

Autonomous Satellite Servicing Infrastructure for In-Space Assembly and Manufacturing

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Journal Info

Category	Quartile
ENGINEERING, MECHANICAL	2