Journal of Astronautics ›› 2017, Vol. 38 ›› Issue (1): 50-56.doi: 10.3873/j.issn.1000-1328.2017.01.007

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Pulse Width and Pulse Frequency Modulation Control of Tethered Satellite Passive Deployment

ZHU Bing, ZHAN Xing qun, ZHU Zheng hong, LIU Ming,LIU Bao yu   

  1. 1. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. Department of Earth and Space Science and Engineering, York University, Toronto M3J 1P3, Canada
  • Received:2016-05-10 Revised:2016-10-16 Online:2017-01-15 Published:2017-01-25


A new distributed control method is proposed for satisfying the mission requirements of non-overshooting deployment and positive tether velocity constraint. A dynamics model of distributed control by referring to space tether deployment dynamics is developed, as well as a desired reference deployment trajectory with feedback linearization method and back-stepping method. We propose a new pulse-width and pulse-frequency modulation control law with input limitation and apply it to the simulation of tethered satellites deployment trajectory-tracking. The simulation results show its performance with non-overshooting deployment; meanwhile, the positive deployment velocity can also be guaranteed simultaneously. It validates the effectiveness of distributed control method, which could be a reference for future space tethered satellites deployment system design. 

Key words: Tethered satellite, Tether deployment, Non overshooting, Pulse width and pulse frequency ;Trajectory tracking ;Distributed control

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