Practical predefined-time attitude coordination control for multiple rigid spacecraft |
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| Institution: | 1. Research Center of Satellite Technology, Harbin Institute of Technology, Harbin, China;2. Department of Electronic and Information Engineering, College of Engineering, Shantou University, Shantou, China;1. MOE-LCSM, School of Mathematics and Statistics, Hunan Normal University, Changsha, 410081, Hunan, China;2. The Key Laboratory of Control and Optimization of Complex Systems, College of Hunan Province, Hunan Normal University, Changsha, 410081, China;1. Department of Electrical Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran;2. Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway;1. College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China;2. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China |
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| Abstract: | This paper investigates the practical predefined-time attitude cooperation control problem for a group of rigid spacecraft under an undirected communication graph. First, since the leader is accessible to only a subset of the group members, a distributed practical predefined-time state observer is proposed to estimate the leader’s states by using a time-varying scaling function. Second, a distributed practical predefined-time attitude coordination controller is designed to guarantee that the attitude tracking errors of all follower spacecraft converge to the neighborhood of the origin within a preset time. Finally, the effectiveness of the proposed control law is demonstrated by illustrative numerical examples. |
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