Open AccessFinite‐time distributed cooperative attitude control for multiple spacecraft with actuator saturation
Author(s) -
Lu Pingli,
Gan Chao,
Liu Xiangdong
Publication year - 2014
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2014.0147
Subject(s) - terminal sliding mode , control theory (sociology) , robustness (evolution) , attitude control , spacecraft , computer science , manifold (fluid mechanics) , bounded function , actuator , rate of convergence , controller (irrigation) , sliding mode control , engineering , mathematics , control engineering , control (management) , channel (broadcasting) , nonlinear system , artificial intelligence , physics , biochemistry , quantum mechanics , agronomy , mechanical engineering , gene , aerospace engineering , mathematical analysis , computer network , chemistry , biology
In this study, the distributed cooperative attitude tracking controller based on fast terminal sliding mode and Chebyshev neural network (CNN) is proposed for multiple spacecraft formation flying (SFF) system in the presence of external disturbance. Firstly, a new modified fast terminal sliding mode manifold, which has faster convergence rate than the existing terminal sliding modes, is proposed. Then, based on the proposed terminal sliding mode manifold, the distributed cooperative attitude tracking controller is designed for the SFF system, where the time varying reference attitude can be only accessed to a subset of the group member. To guarantee that the output of CNN used in the controller is bounded by the corresponding bound of the approximated unknown function, a modified adaptive law is proposed to revise the sliding mode manifold, meanwhile, the finite‐time stability of SFF system can be also guaranteed. Finally, numerical simulations are presented to verify the validity and robustness of the proposed control algorithm.