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Small body GN&C research report : a guidance and control technique for small-body proximity operations with guaranteed guidance resolvability and required thruster silent time

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dc.contributor.author Carson, John M. III
dc.contributor.author Ackmese, A. Behcet
dc.date.accessioned 2008-08-13T21:50:22Z
dc.date.available 2008-08-13T21:50:22Z
dc.date.issued 2005-09-02
dc.identifier.uri http://hdl.handle.net/2014/40913
dc.description.abstract The guidance and control (G&C) algorithms for enabling small-body proximity operations are developed by using a model predictive control approach along with a convexication of the governing dynamics, control constraints, and trajectory/state constraints. The open-loop guidance is solved ahead of time or in a resolvable, real-time manner through the use of PWG (Pseudo Way-point Generation), a technique developed in this research. The PWG scheme ensures required thruster silent times during trajectory maneuvers. The feedback control is implemented to track the PWG trajectories in a manner that guarantees the resolvability for the open-loop problem, enabling the ability to update the G&C in a model-predictive manner. The schemes incorporate gravity models and thruster ring times into discrete dynamics that are solved as a optimal control problem to minimize fuel consumption or thruster energy expenditure. The optimal control problem is cast as an LMI (Linear Matrix Inequality) and then solved through Semi-Definite Programming techniques in a computationally efficient manner that provides convergence and constraint guarantees. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2005. en_US
dc.relation.ispartofseries JPL en_US
dc.relation.ispartofseries D-32948 en_US
dc.subject guidance and control (G&C) en_US
dc.subject open - loop guidance en_US
dc.title Small body GN&C research report : a guidance and control technique for small-body proximity operations with guaranteed guidance resolvability and required thruster silent time en_US
dc.type Technical Report en_US


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