Relative position finite-time coordinated tracking control of spacecraft formation without velocity measurements |
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| Affiliation: | 1. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China;2. Department of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;1. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, PR China;2. School of Automation, Southeast University, Nanjing 210096, PR China;3. Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing 210096, PR China;1. Academy of Military Science, Beijing 100091, China;2. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;3. Department of Aerospace Engineering, Ryerson University, Toronto M5B2K3, Canada;4. College of Engineering, Bohai University, Jinzhou 121013, China;1. Research Center of Satellite Technology, Harbin Institute of Technology, Harbin 150001, China;2. Department of Earth and Space Science and Engineering, York University, Toronto, Ontario M3J 1P3, Canada |
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| Abstract: | This paper investigates finite-time relative position coordinated tracking problem by output feedback for spacecraft formation flying without velocity measurement. By employing homogeneous system theory, a finite-time relative position coordinated tracking controller by state feedback is firstly developed, where the desired time-varying trajectory given in advance can be tracked by the formation. Then, to address the problem of lack of velocity measurements, a finite-time output feedback controller is proposed by involving a novel filter to recover unknown velocity information in a finite time. Rigorous proof shows that the proposed control law ensures global stability and guarantees the position of spacecraft formation to track a time-varying reference in finite time. Finally, simulation results are presented to illustrate the performance of the proposed controller. |
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| Keywords: | Spacecraft formation flying Coordinated tracking Output feedback Finite-time control |
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