摘要
分时获取不同谱段的光谱信息是空间多光谱成像的前提。为了满足卫星相机多光谱成像中的光谱细分要求,设计了一种高精度、高稳定性分光器装置,通过周边安装的步进电机驱动大尺寸角接触球轴承实现滤光片频繁的切入切出运动。采用数值模型与模态试验方法验证机构的动力学特性,根据正弦扫频及随机振动试验分析滤光轮机构在卫星发射阶段的有效性,一种地面微振动试验用以描述滤光轮机构的在轨稳定性。数值分析与试验结果表明,旋转滤光轮机构满足发射安全性与在轨稳定性需求。这类周边驱动大尺寸薄壁轴承的新型旋转滤光轮为大口径卫星相机的空间应用提供了一种新途径。
Time-sharing acquisition of the spectral information in different spectral bands is the premise of the spatial multispectral imaging. In order to meet the requirement of the spectral subdivision in multispectral imaging of a satellite camera, a spectrometer device was designed in this paper. The filter wheel drive mechanism was designed to achieve high precision and high stability cut-in and cut-out optical path through a large diameter angular contact ball bearing peripheral driven by stepper motor. The dynamic characteristics of the mechanism were validated by numerical model and modal test. The effectiveness of the filter wheel for the launch environment was analyzed by swept sine test and random vibration test. The ground micro-vibration test was used to describe the on-orbit stability for the filter wheel. The numerical analysis and experimental results indicate that the filter wheel guarantees both the structural safety and on-orbit stability requirement. This kind of peripheral driven filter wheel with large thin-walled bearings provides a new method for the space application of the large aperture satellite camera.
作者
王跃
李世其
张恒
WANG Yue;LI Shiqi;ZHANG Heng(Key Laboratory for Advanced Optical Remote Sensing Technology of Beijing,Beijing Institute of Space Mechanics and Electricity,Beijing 100094,China;School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2020年第10期101-105,179,共6页
Journal of Vibration and Shock
基金
国家重大科技专项工程。
关键词
卫星相机
滤光轮机构
模态试验
微振动
satellite camera
filter wheel mechanism
modal test
micro-vibration
作者简介
第一作者:王跃,男,硕士,高级工程师,1985年生;通信作者:张恒,男,博士,1988年生。
