Journal
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
Volume 30, Issue 1, Pages 266-281Publisher
WILEY
DOI: 10.1002/rnc.4763
Keywords
adding a power integrator; attitude coordination control; fixed-time control; multiple rigid spacecraft
Funding
- Shantou University (STU) Scientific Research Foundation for Talents [NTF18015]
- Key Lab of Digital Signal and Image Processing of Guangdong Province
- Key Laboratory of Intelligent Manufacturing Technology (Shantou University), Ministry of Education
- Science and Technology Planning Project of Guangdong Province of China [180917144960530]
- Educational Commission of Guangdong Province of China [2017KZDXM032]
- State Key Lab of Digital Manufacturing Equipment and Technology [DMETKF2019020]
- National Defense Technology Innovation Special Zone Project (Shantou University)
- National Defense Technology Innovation Special Zone Project (National University of Defense Technology)
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In this paper, the fixed-time attitude coordination control for multiple rigid spacecraft under an undirected communication graph is investigated. By using the backstepping technique, the distributed fixed-time observer, and the method of adding a power integrator, a distributed fixed-time attitude coordination control law is designed for a group of spacecraft. The proposed control scheme is nonsingular and can guarantee a group of rigid spacecraft simultaneously tracking a common desired attitude within fixed time even when the time-varying reference attitude is available only to a subset of the group members. Rigorous analysis is provided to show that the attitude consensus tracking errors can converge to the origin in finite time which is bounded by a fixed constant independent of initial conditions. Numerical simulations are carried out to demonstrate the effectiveness of the proposed control law.
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