›› 2011, Vol. 31 ›› Issue (6): 36-42.doi: 10.3780/j.issn.1000-758X.2011.06.006

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Optimal Cooperative Rendezvous of Spacecraft Considering Locations of Capture Interfaces

HE  Zhao-Wei, SHI  Peng, GE  Bing, ZHAO  Yu-Shan   

  1. (School of Astronautics, Beihang University, Beijing 100191)
  • Received:2011-03-02 Revised:2011-12-25 Published:2011-12-25 Online:2011-12-25

Abstract: The optimal close range rendezvous of two spacecrafts was investigated. The complete 26 state model with six degree of freedom for the rendezvouswas developed to prevent the undesired collision of spacecraft considering the attitude change, the locations of capture interfaces, and the pathconstraints. The minimum quadratic control and minimum time problems were discretized into the problem of large scale onlinear programming bymeans of Gaussian pseudospectral method, which was solved by the software package SNOPT. The influences of different initial parameters on theoptimal solutions were also analyzed. Numerical simulation results show that the time and fuel cost may be decreased with the optimal cooperativerendezvous compared with the optimal active passive rendezvous.

Key words: Cooperative rendezvous, Optimal control, Gaussian pseudospectral method, Spacecraft