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Your search keyword '"autonomous on orbit operations"' showing total 2 results
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2 results on '"autonomous on orbit operations"'

1. Development and experimentation of LQR/APF guidance and control for autonomous proximity maneuvers of multiple spacecraft

Author

Bevilacqua, R., Lehmann, T., and Romano, M.

Subjects
*SPACE vehicle control systems, *ALGORITHMS, *H2 control, *HARMONIC analysis (Mathematics), *REAL-time control, *ENERGY consumption, *ROBOTICS, *DECISION making
Abstract

Abstract: This work introduces a novel control algorithm for close proximity multiple spacecraft autonomous maneuvers, based on hybrid linear quadratic regulator/artificial potential function (LQR/APF), for applications including autonomous docking, on-orbit assembly and spacecraft servicing. Both theoretical developments and experimental validation of the proposed approach are presented. Fuel consumption is sub-optimized in real-time through re-computation of the LQR at each sample time, while performing collision avoidance through the APF and a high level decisional logic. The underlying LQR/APF controller is integrated with a customized wall-following technique and a decisional logic, overcoming problems such as local minima. The algorithm is experimentally tested on a four spacecraft simulators test bed at the Spacecraft Robotics Laboratory of the Naval Postgraduate School. The metrics to evaluate the control algorithm are: autonomy of the system in making decisions, successful completion of the maneuver, required time, and propellant consumption. [Copyright &y& Elsevier]

Published
2011
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2. Development and experimentation of LQR/APF guidance and control for autonomous proximity maneuvers of multiple spacecraft

Author

Riccardo Bevilacqua, T. Lehmann, Marcello Romano, Naval Postgraduate School, and Mechanical and Aerospace Engineering

Subjects
Engineering, autonomous control, autonomous on orbit operations, Aerospace Engineering, ComputerApplications_COMPUTERSINOTHERSYSTEMS, linear quadratic regulator, Successful completion, Linear-quadratic regulator, Computer Science::Robotics, Artificial potential function, spacecraft servicing, multiple spacecraft assembly, formation flight, Computer Science::Systems and Control, Control theory, Real-time Control System, Spacecraft, business.industry, on-th-ground spacecraft simulation, Robotics, Control engineering, artificial potential function, laboratory experimentation, Maxima and minima, Fuel efficiency, Artificial intelligence, real-time control, business, wall-following method
Abstract

http://dx.doi.org/10.1016/j.actaastro.2010.08.012 This work introduces a novel control algorithm for close proximity multiple spacecraft autonomous maneuvers, based on hybrid linear quadratic regulator/artificial potential function (LQR/APF), for applications including autonomous docking, on-orbit assembly and spacecraft servicing. Both theoretical developments and experimental validation of the proposed approach are presented. Fuel consumption is sub-optimized in real-time through re-computation of the LQR at each sample time, while performing collision avoidance through the APF and a high level decisional logic. The underlying LQR/APF controller is integrated with a customized wall-following technique and a decision logic, overcoming problems such as local minima. The algorithm is experimentally tested on a four spacecraft simulators test bed at the Spacecraft Robotics Laboratory of the NAval Postgraduate School. The metrics to evaluate the control algorithm are: autonomy of the system in making decisions, successful completion of the maneuver, required time, and propellant consumption.

Published
2011

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