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�������պ����ѧѧ�� 2006, Vol. 32 Issue (04) :421-425    DOI:
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1. �������պ����ѧ ������Ϣ����ѧԺ, ���� 100083;
2. �й���ѧԺ?�ռ��ѧ��Ӧ���о�����, ���� 100080
Filter wheel device in solar X-EUV image telescope
Zhang Xin1, Su Donglin1, Li Baoquan2, Wei Fei2*
1. School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China

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ժҪ ̫��X����-����������(X-EUV,X rays-Extreme Ultraviolet)������Զ�����ҹ�ר�ŷ����ڿռ�����Ԥ���о���̫���̲�����������,��Զ��������0.4~10?nm��X���߲��κ�19.5?nm�ļ������׶�,�ܹ��ṩȫ���桢�߷ֱ��ʵij���۲�.����ѡ��װ���Ǹ���Զ����һ����Ҫ��ϵͳ,������ǿ��Զ����̬��Ӧ��Χ,�����ڻ�ȡ����ķ�����������������,��Щ�����������������.��װ�õ��˶����ƾ��е͹��ĵ��ص�,�ܹ�����ռ�Ӧ�û���������Ҫ��.����,���������λ�ÿ�������Ƶ��ص�,��2�ֹ���������������λ�ü��,�ӹ��̿�ʵ�ֽǶ���ѡ������һ��,���Ҵӹ��̿ɿ��ԽǶȷ����˸ù��������Ĺ���ģʽ,������ڹ���ϴ����Ԥ��.
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Abstract�� The solar X-EUV(X rays-extreme ultraviolet) imaging telescope is a solar shortwave imaging instrument, which can be used to monitor the solar activities and predict space weather. The solar X-EUV imaging telescope operates in the 0.4~10?nm X-ray waveband and the 19.5?nm EUV wavelength, and it can provide the high resolving solar full-disk. The filter wheel is an important part of the solar X-EUV imaging telescope, which can expand the dynamic range of responses, redound to reconstruct the plasma parameters from which different solar activities can be analyzed. Low power consumption is one characteristic of the movement control of the filter wheel, which needs to satisfy the special requirement of space application. In addition, it is the emphasis to develop a method to maintain the accurate position of step motor. There are two types of PECM(photoelectric coding matrix) that can be used to detect positions. And then, one of the types is adopted which is realizable in practice. Furthermore, form the point of view of functional reliability, the failure mode analysis of PECM is performed and the correspondent solution is provided.
Keywords�� space telescopes   space applications   stepping motors   position measurement     
Received 2005-04-14;
Fund:

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About author: �� ��(1977-),��,�ӱ���̨��,��ʿ��, zhangxin@ee.buaa.edu.cn.
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����, �ն���, �Ȩ, Τ��.̫��X-EUV������Զ������ѡ��װ��[J]  �������պ����ѧѧ��, 2006,V32(04): 421-425
Zhang Xin, Su Donglin, Li Baoquan, Wei Fei.Filter wheel device in solar X-EUV image telescope[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(04): 421-425
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