Time-Optimal Nonlinear Feedback Control for the NPSAT1 Spacecraft, IEEE-ASME (2005; Monterey, California)

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Author
Sekhavat, Pooya
Fleming, Andrew
Ross, I. Michael
Date
2005-07-24Metadata
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NPSAT1 is a small satellite being built at the Naval Postgraduate School, and due to launch in January 2006. It uses magnetic actuators and a pitch momentum wheel for attitude control. In this paper, a novel time-optimal sampled-data feedback control algorithm is introduced for closed-loop control of NPSAT1 in the presence of disturbances. The feedback law is not analytically explicit; rather, it is obtained by a rapid re-computation of the open-loop time-optimal control at each update instant. The
implementation of the proposed controller is based on a shrinking horizon approach and does not require any advance knowledge of the computation time. The ground-
test simulations show that the proposed control scheme performs well in the presence of parameter uncertainties and external disturbance torques.
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The article of record as published may be located at http://ieeexplore.ieee.org
Proceedings of the 2005 IEEE/ASME International Conference on Advanced Intelligent Mechatronics ; Monterey, California, USA, 24-28 July, 2005
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Related items
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