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Reaction wheel fault tolerant control for spacecraft attitude stabilization with finite‐time convergence
Author(s) -
Hu Qinglei,
Huo Xing,
Xiao Bing
Publication year - 2013
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.2924
Subject(s) - control theory (sociology) , actuator , convergence (economics) , fault tolerance , attitude control , controller (irrigation) , reachability , spacecraft , computer science , inertia , control reconfiguration , fault (geology) , control engineering , engineering , control (management) , algorithm , artificial intelligence , agronomy , physics , classical mechanics , seismology , geology , biology , embedded system , distributed computing , aerospace engineering , economics , economic growth
SUMMARY The problem of fault tolerant attitude stabilization with finite‐time convergence is investigated for spacecraft with redundant actuators. On the basis of the sliding mode control technique, a robust controller is derived with uncertain inertia parameters, actuator faults, and external disturbances explicitly addressed. It is shown that finite‐time reachability into the small neighborhood of sliding surface, and faster time convergence of attitude orientation are achieved. To address actuator input constraints, an adaptive fault tolerant controller is further proposed. One feature of the proposed strategy is that the design of the fault tolerant control does not require any fault detection and isolation mechanism to detect, separate, and identify actuator faults. The attitude stabilization performance using the controller is evaluated through a numerical example. Copyright © 2012 John Wiley & Sons, Ltd.