Abstract
In this paper, a model predictive control (MPC) policy is developed to simultaneously perform station keeping, attitude control, and momentum management of a nadir-pointing geostationary satellite equipped with three reaction wheels and four on-off electric thrusters mounted on two boom assemblies attached to the anti-nadir face of the satellite. The MPC policy includes an inner-loop SO(3)-based attitude control law to maintain a nadir-pointing attitude, and an outer loop for station keeping and momentum management. The MPC formulation makes use of two different prediction horizons; a short horizon is used for the states associated with the orbit's inclination and a longer horizon is used for all other states. This split-prediction horizon MPC policy leads to a significant reduction in delta-v compared to a single horizon. The continuous thrust command generated by the MPC policy is quantized as a single on-off pulse every feedback period in such a way that the predicted error in the states induced by quantization is minimized, which reduces the number of on-off pulses compared to other quantization approaches in the literature, including pulse-width modulation.
Original language | English (US) |
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Title of host publication | 2018 Annual American Control Conference, ACC 2018 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 652-657 |
Number of pages | 6 |
ISBN (Print) | 9781538654286 |
DOIs | |
State | Published - Aug 9 2018 |
Externally published | Yes |
Event | 2018 Annual American Control Conference, ACC 2018 - Milwauke, United States Duration: Jun 27 2018 → Jun 29 2018 |
Publication series
Name | Proceedings of the American Control Conference |
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Volume | 2018-June |
ISSN (Print) | 0743-1619 |
Other
Other | 2018 Annual American Control Conference, ACC 2018 |
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Country/Territory | United States |
City | Milwauke |
Period | 6/27/18 → 6/29/18 |
Bibliographical note
Publisher Copyright:© 2018 AACC.