Open AccessObserver-Based Backstepping Fault-tolerant Control for Spacecraft with Reaction-wheel Failures
Author(s) -
Z Z Zhang,
D Ye,
Zhengwu Sun
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1215/1/012012
Subject(s) - backstepping , control theory (sociology) , actuator , observer (physics) , fault tolerance , spacecraft , attitude control , nonlinear system , bounded function , computer science , controller (irrigation) , control engineering , control (management) , engineering , mathematics , adaptive control , artificial intelligence , aerospace engineering , distributed computing , mathematical analysis , agronomy , physics , quantum mechanics , biology
In this paper, nonlinear satellite system with actuator faults is considered. To solve the problem of attitude stabilization of satellite under external disturbances and actuator faults, an observer is designed firstly. And the output of the observer is proved to be uniformly ultimately bounded. By using the estimated information of the observer, a backstepping fault-tolerant controller is derived. The proposed controller could achieve attitude stabilization in the presence of actuator faults. Finally, a simulation of attitude stabilization is carried out to illustrate effective of the fault-tolerant controller