基于空间机构学的Coude光路装调方法

张丽敏; 韩西达; 曹玉岩; 王文攀

doi:doi:10.3788/irla201746.0818004

红外与激光工程, 2017, 46 (8): 0818004, 网络出版: 2017-11-07

基于空间机构学的Coude光路装调方法

Coude light path alignment scheme with spatial mechanism

论文大纲

张丽敏 ^*韩西达曹玉岩王文攀

作者单位

中国科学院长春光学精密机械与物理研究所, 吉林长春 130033

Coude光路蒙特卡洛计算机辅助装调技术 Coude light path Monte Carlo computer aided adjustment technique

摘要

库德光路光学元件多且空气间隔长, 导致随着望远镜口径的增大装调难度急剧增加, 因此将计算机辅助装调技术引入到Coude光路装调对准中。首先利用了机器人运动学方程的D-H表示法对库德全反射光路进行建模, 然后根据光路误差来源讨论了蒙特卡洛模拟在Coude光路装调对准中的应用, 通过分析各个镜面的影响权重, 确定了系统装调顺序; 最后, 将蒙特卡洛法作为优化算法, 得出了Coude光路装调后的理想结果。通过模拟仿真, 证明了该方法可以将Coude光路靶面目标圆半径由5 mm下降到装调后的0.3 mm。结果表明: 该方法简单、快速, 而且精度高, 对于全反射光路的装调是可行有效的。

Abstract

Coude light path consists of several optical elements, which have large interval, so the alignments become very difficult as the increase of telescope aperture, as a result, computer aided adjustment technique was applied to analyze reflecting light path error, such as Monte Carlo statistic tolerance. First, an analytical model based on robot kinematics equation of D-H notation was derived for Coude light path alignment scheme. Then, the theory of Monte Carlo simulation was studied, its application in Coude path alignment was discussed. By the analysis of the weight of every mirror in the effect of the path alignment, the final adjustment order was confirmed. Lastly, Monte Carlo methods was made as the optimization algorithm to find out the perfect result of the Coude alignment. Simulation results indicate that by the use of the Monte Carlo methods, the radius of object circle is reduced from 5 mm to 0.3 mm, the adjustment of Coude path is simple, fast, and precision is improved, as a broad applicable tolerance design method can solve the adjustment of all reflecting light path.

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张丽敏, 韩西达, 曹玉岩, 王文攀. 基于空间机构学的Coude光路装调方法[J]. 红外与激光工程, 2017, 46(8): 0818004. Zhang Limin, Han Xida, Cao Yuyan, Wang Wenpan. Coude light path alignment scheme with spatial mechanism[J]. Infrared and Laser Engineering, 2017, 46(8): 0818004.

基于空间机构学的Coude光路装调方法

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