第6期
第23卷 2015年6月文章编号
1004-924X(2015)06-1688-07
光学精密工程
Optics and Precision Engineering
Vol.23No.6
Jun,2015
提高万向轴系式快速反射镜指向精度的装置
徐新行1,2，刘廷霞1，时魁"，薛向尧，王兵！
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033；
2.中国科学院大学，北京100049）
摘要：为了减小万向轴系式快速反射镜(FSM)的轴向间隙，改善FSM系统的指向精度，设计了一种轴系间原消除装置。在明确万向轴系式FSM结构原理的基础上，分析了FSM系统指向误差的来源。然后，设计了轴系间隙消除装置，计算了压缩弹簧预紧力并对它的结构参数进行了设定。最后，针对是否装有轴系间隙消除装置的FSM系统的指向精度进行了对比测试。结果表明：该轴系闻欧消除装置能够有效改善FSM系统的指向精度，使其在方位方向提高约4.4倍，筛仰方向提高约3.3借。此外，在刚性支撑轴系基础上设计的弹性轴向间隙消除装置，不仅改善了万向轴系式FSM的指向精度，还为系统的运动部分提供了二次刚性支撑，从而进一步提高了FSM的承载能力。
键调：快速控制反射镜；万向轴系；轴向间腺；指向精度关
中图分类号：TH703
文献标识码：A
doi:10.3788/OPE.20152306.1688
Deviceforimprovingpointingprecisionof faststeeringmirrorwithsphericalgemel
XU Xin-hang'-2·, LIU Ting-xia', SHI Kui', XUE Xiang-yao', WANG Bing
(l.ChangchunInstituteof Optics,FineMechanics and Physics,
ChineseAcademyofSciences,Changchun130033,China;
2.Universityof ChineseAcademy of Sciences,Beijing 100049,China)
*Correspondingauthor，E-mail:zzh123321rrh@163.com
Abstract: To reduce the axial clearance of a Fast Steering Mirror (FSM) with a spherical gemel and to improve its pointing precision, a device for removing the axial clearance was designed. The structure principle of the FSM with spherical gemel was analyzed and the error sources influencing the pointing precision of FSM were discussed. Then, the device for removing axial clearance was designed, the compress force of a spring was confirmed and its structure parameters were set. Finally, the pointing precisions of FSMs with and without the device for removing axial clearance were tested respectively. The results show that the device for removing axial clearance is very helpful to improve the pointing precision of FSM with spherical gemel, and the azimuth pointing precision has been improved about 4. 4times, the pitching pointing precision has been improved about 3. 3 times.The designed flexure device for removing axial clearance not only improves the pointing precision of the FSM but also provides a rigid supporting for the FSM system, so that the carrying capacity of the FSM is increased further.
Key words: fast steering mirror;spherical gemel;axial clearance;pointing precision
收稿日期：2014-03-18；修订日期：2014-05-18.
基金项目：国家863高技术研究发展计划资助项目（No.2011AA7031024G)；吉林省自然科学基金资助项目（No
201115123)