太阳X-EUV成像望远镜波长选择装置  

Filter wheel device in solar X-EUV image telescope

作　　者：张鑫[1] 苏东林[1] 李保权[2] 韦飞[2] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083 [2]中国科学院空间科学与应用研究中心,北京100080

出　　处：《北京航空航天大学学报》2006年第4期421-425,共5页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目(40474069)

摘　　要：太阳X射线-极紫外射线（X-EUV,X rays-Extreme Ultraviolet）成像望远镜是我国专门服务于空间天气预报研究的太阳短波成像监测仪器,望远镜工作在0.4～10 nm的X射线波段和19.5 nm的极紫外谱段,能够提供全日面、高分辨率的成像观测.波长选择装置是该望远镜的一个重要子系统,可以增强望远镜动态响应范围,有助于获取更多的反演日冕等离子体参数,这些参数可用来诊断日冕活动.该装置的运动控制具有低功耗的特点,能够满足空间应用环境的特殊要求.其中,步进电机精位置控制是设计的重点,有2种光电编码矩阵可以用于位置检测,从工程可实现角度优选出其中一种,并且从工程可靠性角度分析了该光电编码矩阵的故障模式,提出了在轨故障处理的预案.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.

关 键 词：空间望远镜 空间应用 步进电机 位置检测 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]