Abstract
This paper introduces a novel on-off quantization scheme used with a control architecture based on model predictive control (MPC) 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. 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 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. This quantization scheme introduces very limited change in behavior and performance compared to results with the non-quantized MPC policy, and uses significantly less on-off pulses compared to other approaches in the literature, such as pulse-width modulation. The tuning parameters of the proposed quantization scheme are discussed in detail and their effects on closed-loop performance are analyzed numerically.
Original language | English (US) |
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Title of host publication | 2018 European Control Conference, ECC 2018 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 3114-3119 |
Number of pages | 6 |
ISBN (Electronic) | 9783952426982 |
DOIs | |
State | Published - Nov 27 2018 |
Externally published | Yes |
Event | 16th European Control Conference, ECC 2018 - Limassol, Cyprus Duration: Jun 12 2018 → Jun 15 2018 |
Publication series
Name | 2018 European Control Conference, ECC 2018 |
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Other
Other | 16th European Control Conference, ECC 2018 |
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Country/Territory | Cyprus |
City | Limassol |
Period | 6/12/18 → 6/15/18 |
Bibliographical note
Publisher Copyright:© 2018 European Control Association (EUCA).