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�������պ����ѧѧ�� 2011, Vol. 37 Issue (8) :948-952    DOI:
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������1, ��ΰ1, ����2*
1. �������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100191;
2. �й��ռ似���о�Ժ���岿,���� 100094
Measure of reaction wheels disturbance considering coupling effect
Zhang Pengfei1, Cheng Wei1, Zhao Yu2*
1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Department of Integration Engineering,China Academy of space Technology, Beijing 100094, China

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Abstract�� The micro-disturbance of reaction wheel assembly (RWA) is a key factor which will affect the accuracy of spacecraft attitude control. To obtain the disturbance characteristics,the RWA disturbance was meaured,corresponding control methods and isolation systems were adopted to restrain them. The disturbance coupled with the nature frequency of test bed since the bandwidth of RWA disturbance was wide. Accelerance measurement method was used to express the effect which the test bed had on measure results. And the mechanical model of RWA was built, in order to obtain the pure disturbance of RWA. Two test beds with different rigidity were designed to measure the RWA disturbance. Amplification coefficient was used to modify the measure results. To acquire the disturbance without affect of test bed rigidity, and results from two equipments were compared. The results show that accelerance measurement combined with mechanical modeling method captures the affection of test bed rigidity on measured disturbance effectively.
Keywords�� reaction wheel assembly   measurements   coupling   accelerance     
Received 2010-04-16;


About author: ������(1986- ),��,�ӱ�������,˶ʿ��,zhangpf@ase.buaa.edu.cn.
������, ��ΰ, ����.�������ЧӦ�Ķ������Ŷ�����[J]  �������պ����ѧѧ��, 2011,V37(8): 948-952
Zhang Pengfei, Cheng Wei, Zhao Yu.Measure of reaction wheels disturbance considering coupling effect[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(8): 948-952
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