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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2011, Vol. 32 ›› Issue (5): 857-865.doi: CNKI:11-1929/V.20101213.1748.002

• Avionics and Autocontrol • Previous Articles     Next Articles

Coupled Control of Relative Position and Attitude for On-orbit Servicing Spacecraft with Respect to Target

LU Wei, GENG Yunhai, CHEN Xueqin, WANG Feng   

  1. Research Center of Satellite Technology, Harbin Institute of Technology, Harbin 150080, China
  • Received:2010-08-06 Revised:2010-10-13 Online:2011-05-25 Published:2011-05-19

Abstract: The problems of coupled relative position and attitude dynamics and control of an on-orbit servicing spacecraft while it is going to rendezvous and dock with a target spacecraft are investigated in this paper. Considering coupled control inputs, an integrated coupling relative position and attitude dynamic model of the on-orbit servicing spacecraft is built with respect to the target spacecraft. For the above-mentioned integrated coupling dynamic model, an integrated coupling control algorithm is proposed based on feedback linearization. This algorithm also takes into consideration the coupled relative position tracking control and bounded control inputs. Under the condition of bounded disturbance, the closed-loop system is proved to be steady by Lyapunov stability theory. Numerical simulation results demonstrate that the coupled control law is robust with perfect tracking performance.

Key words: aerospace engineering, on-orbit servicing, coupled control, spacecraft rendezvous, spacecraft docking, satellite tracking, position, attitude

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