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�������պ����ѧѧ�� 2012, Vol. 38 Issue (1) :80-85    DOI:
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��Ң, ��ͥ��, ������*
�������պ����ѧ �ѧԺ, ���� 100191
Dynamic characteristic of vibration isolation platform of control moment gyroscopes on satellites
Zhang Yao, Huang Tingxuan, Xu Shijie*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ Ϊ�ܹ���������Ч�غ��ṩһ�ֳ�������,���һ�����Ͽ�����������Ⱥ(CMGs,Control Moment Gyroscopes)�ĸ��񷽰�,������ʹ�õĸ���ƽ̨�Ķ���ѧ���Խ����о�����.���Ƚ����˲�ͬ����ģ�͵ĸ���Ԫ������ԭ��Ͳ�������;�������ţ��-ŷ�����Ժ��и���ƽ̨��CMGs�����ǽ��ж���ѧ��ģ;���ͨ��Ƶ���ʱ��ķ����������Ա��˸�������ģ���µĸ���ƽ̨��˥�������Լ���������̬�ȶ��ȵĸ��Ƴ̶�.�������:�������ӵ�г����������ģ���µĸ���ƽ̨�Թ����ֵ��һ����˥������,������ģ���µĸ���ƽ̨����˥���Ͷ���̬�ȶ��ȵĸ��Ƴ̶���Ҫ������������2��ģ��.
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Abstract�� An isolation scheme for control moment gyroscopes (CMGs) was put forward and used on satellite which can provide an ultra quiet environment for the optical payloads, and dynamic characteristic of the vibration isolation platform for CMGs was analyzed in detail. The theories of the vibration isolators of different parameter models and the reason of choosing certain parameters were studied. A whole-satellite dynamic model with vibration isolation platform and CMGs was constructed by Newton-Euler method. The force transfer rates of different parameter models were compared by using frequency domain method. The ameliorative degrees of vibration isolation device with the two-parameter and three-parameter model to the satellite attitude stabilization were compared by using time domain method. The simulation results show that the vibration isolation platform with two-parameter adding tuned mass damper model can attenuate the resonance amplification peak to a certain extent, and the vibration isolation platform with three-parameter model had the best performance in the three models.
Keywords�� control moment gyroscopes   two-parameter model   tuned mass damper   three-parameter model   vibration isolation platform     
Received 2010-08-24;
Fund:

�й�����Ƽ����Ź�˾����Ƽ����»���͹�����Ȼ��ѧ����������Ŀ(10902003)

About author: �� Ң(1985- ),��,�����ܿ���,��ʿ��,zhangyao7000@yahoo.cn.
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��Ң, ��ͥ��, ������.���Ͽ�����������Ⱥ����ƽ̨�Ķ���ѧ����[J]  �������պ����ѧѧ��, 2012,V38(1): 80-85
Zhang Yao, Huang Tingxuan, Xu Shijie.Dynamic characteristic of vibration isolation platform of control moment gyroscopes on satellites[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V38(1): 80-85
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2012/V38/I1/80
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