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�������պ����ѧѧ�� 2006, Vol. 32 Issue (04) :377-381    DOI:
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IPACS modeling and dynamical analysis of a flexible spacecraft
Zhang Jun, Xu Shijie*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ �����������µ��������շ��̺Ͷ����ض���,�����˴����ٿ�����������Ⱥ(VSCMGs,Variable Speed Control Moment Gyroscopes)�����Ժ�����������/��̬һ�廯����ϵͳ(IPACS, Integrated Power/Attitude Control System)�Ķ���ѧģ��,��ģ���ʺ�����̬��������Ƽ�VSCMGs���������.���ö��������VSCMGs����ѡȡ���ϵķ���,��Ч�ر�����VSCMGs���ʱ���ܳ��ֵ���������.�����˲���VSCMGs�����Ժ�����IPACS�еĶ���ѧ�������,����ij���ͺ�����Ϊ����������ֵ����.�����ͷ�������ʾ��,��VSCMGs��������ӽ�(������)�������д�/�����л�ʱ,VSCMGs��������Ը����������Ӱ��.
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Abstract�� The dynamical equations of a flexible spacecraft with VSCMGs (variable speed control moment gyroscopes) are established via the Lagrange equations in terms of quasi-coordinates and the momentum theorem. The equations are suitable for both attitude control law design and VSCMGs steering law design. Singularity may occur when VSCMGs are used for attitude control and energy storage, which is avoided effectively via momentum management and configuration design of VSCMGs. The dynamical coupling between the IPACS (integrated power/attitude control system) and vibration of flexible spacecraft with VSCMGs is analyzed. The numerical simulation for a large-scale flexible spacecraft with IPACS is carried out. The simulating results show, when either the torque axes of VSCMGs are near singularity (or enter singularity) or the power is conversed, that the motion of VSCMGs markedly influences flexible appendages.
Keywords�� dynamics   energy storage   gyroscopes   analysis   spacecraft   flexible structures     
Received 2005-01-31;


About author: �� ��(1981-),��,����ʯ����,��ʿ��, sciener@sa.buaa.edu.cn.
�ž�, ������.���Ժ�����IPACS��ģ�붯��ѧ����[J]  �������պ����ѧѧ��, 2006,V32(04): 377-381
Zhang Jun, Xu Shijie.IPACS modeling and dynamical analysis of a flexible spacecraft[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(04): 377-381
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