期刊
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
卷 26, 期 14, 页码 2994-3017出版社
WILEY
DOI: 10.1002/rnc.3481
关键词
attitude synchronization; fault-tolerant control; finite-time control; cooperative control; modeling uncertainties; unknown disturbances
资金
- National Basic Research Program of China (973 Program) [2012CB720000]
- National Natural Science Foundation of China [61225015, 61105092]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [61321002]
- Education and Research Foundation for Young Teacher of Fujian Province [A15609]
This paper develops two distributed finite-time fault-tolerant control algorithms for attitude synchronization of multiple spacecraft with a dynamic virtual leader in the presence of modeling uncertainties, external disturbances, and actuator faults. The leader gives commands only to a subset of the followers, and the communication flow between followers is directed. By employing a novel distributed nonsingular fast terminal sliding mode and adaptive mechanism, a distributed finite-time fault-tolerant control law is proposed to guarantee all the follower spacecraft that finite-time track a dynamic virtual leader. Then utilizing three distributed finite-time sliding mode estimators, an estimator-based distributed finite-time fault-tolerant control law is proposed using only the followers' estimates of the virtual leader. Both of them do not require online identification of the actuator faults and provide robustness, finite-time convergence, fault-tolerant, disturbance rejection, and high control precision. Finally, numerical simulations are presented to evaluate the theoretical results. Copyright (c) 2015 John Wiley & Sons, Ltd.
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