Distributed fault-tolerant control design for spacecraft finite-time attitude synchronization

Ning Zhou, Yuanqing Xia*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2994-3017
Number of pages24
JournalInternational Journal of Robust and Nonlinear Control
Volume26
Issue number14
DOIs
Publication statusPublished - 25 Sept 2016

Keywords

  • attitude synchronization
  • cooperative control
  • fault-tolerant control
  • finite-time control
  • modeling uncertainties
  • unknown disturbances

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