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�������պ����ѧѧ�� 2007, Vol. 33 Issue (05) :544-548    DOI:
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Relative attitude estimation and control schemes for the final approach phase of spacecraft rendezvous
Zhu Renzhang, Lin Yan*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� Motion equations of relative attitude between the target and chase spacecraft were elaborated for the final approach phase of spacecraft rendezvous and docking. Two algorithms of extended Kalman filtering based on vision observations were used to estimate relative attitude, one is through attitude estimation of the target, and the other is directly using motion equations of relative attitude. And two control schemes were presented to execute the relative attitude control. One of them is the phase plane control method by using constant control moment and optimal damping, in which the attitude control system can be simplified into three independent two-order systems to obtain the switching function, and the other is based on the quaternion feedback control, using eigenaxis rotation and linear two-order system to design feedback gain coefficients. The phase plane control method is relatively simple but needs more consumption than the quaternion feedback control.
Keywords�� spacecraft rendezvous   Kalman filtering   control systems     
Received 2006-06-15;
About author: �����(1941-),��,����������,����,rz_zhu@tom.com.
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�����, ����.�������������ձƽ��������̬���������[J]  �������պ����ѧѧ��, 2007,V33(05): 544-548
Zhu Renzhang, Lin Yan.Relative attitude estimation and control schemes for the final approach phase of spacecraft rendezvous[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(05): 544-548
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