DocumentCode :
128453
Title :
A predictive control based management policy in a spacecraft power system
Author :
Rui Ding ; Xiaoqiang Ren ; Hongtai Liu ; Liman Yang
Author_Institution :
Inst. of Manned Space Syst. Eng., China Acad. of Space Technol., Beijing, China
fYear :
2014
fDate :
9-11 June 2014
Firstpage :
705
Lastpage :
709
Abstract :
This paper presents a control architecture for power management of a spacecraft system with multi-task flight. In view of both flight-mode complexity and load diversity, a novel power management policy based on predictive control is proposed and will be applied to the spacecraft system. A sequential switching shunt regulator (S3R) based power generation model has been established to predict the primary power supply of the spacecraft. The in-orbit load demand is strongly dependent on the pre-planned flight procedures. Then a battery capacity based power balance policy has been made to guarantee the balance state during a complete orbital period. Once in a state of unbalanced power system, unimportant loads will be excluded when a specific flight mode is applied. A judgment matrix based priority policy has been formulated to classify the in-orbit loads. As a bonus offered by the Power Management and Distribution (PMAD), weights are introduced into our load management system to schedule and establish the load priority. To establish the load priority list, a set of crucial parameters involving working-mode coefficient, grading coefficient and comprehensive indices (in terms of unquantized coupling weights, power consumption and working hours characterized quantificationally) has to be well defined using judgment matrix. Using the judgment matrix, the power system is capable of modulating electrical load suitable to supplied power, with updated priority list generated accordingly.
Keywords :
computational complexity; predictive control; secondary cells; space vehicles; PMAD; S3R; battery capacity based power balance policy; comprehensive indices; control architecture; flight-mode complexity; grading coefficient; in-orbit load demand; judgment matrix based priority policy; load diversity; load priority; multitask flight; power management; power management and distribution; power management policy; predictive control based management policy; preplanned flight procedures; sequential switching shunt regulator based power generation model; spacecraft power system; unbalanced power system; unimportant loads; working-mode coefficient; Batteries; Indexes; NASA; Power supplies; Regulators; Space vehicles;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-4316-6
Type :
conf
DOI :
10.1109/ICIEA.2014.6931254
Filename :
6931254
Link To Document :
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