Time-Optimal Nonlinear Feedback Control for the NPSAT1 Spacecraft, IEEE-ASME (2005; Monterey, California)
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Authors
Sekhavat, Pooya
Fleming, Andrew
Ross, I. Michael
Subjects
NPSAT1
Advisors
Date of Issue
2005-07-24
Date
July 24-28, 2005
Publisher
IEEE
ASME
ASME
Language
Abstract
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.
Type
Conference Paper
Description
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
Proceedings of the 2005 IEEE/ASME International Conference on Advanced Intelligent Mechatronics ; Monterey, California, USA, 24-28 July, 2005
Series/Report No
Department
Department of Mechanical and Astronautical Engineering
Identifiers
NPS Report Number
Sponsors
Funder
NA
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
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.