| Related citation: | Wenjie Li,Quanquan Mu,Shaoxin Wang,Chengliang Yang,Haiping Wang,Zhaoliang Cao,Li Xuan.Design of the Rotation Angle Measurement System for the Atmospheric Dispersion Corrector (ADC)[J].Journal of Harbin Institute Of Technology(New Series),2017,24(4):57-61.DOI:10.11916/j.issn.1005-9113.15324. |
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| Author Name | Affiliation | | Wenjie Li | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
University of Chinese Academy of Science, Beijing 100039, China | | Quanquan Mu | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China | | Shaoxin Wang | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China | | Chengliang Yang | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China | | Haiping Wang | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China | | Zhaoliang Cao | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China | | Li Xuan | State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China |
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| Abstract: |
| In order to measure the rotation angle error of the worm and gear mechanisms in the atmospheric dispersion corrector (ADC), a novel measurement system based on the autocollimator is designed in this paper. Based on the position relations between the shaft and spot converged by rays of autocollimator, the rotation angle can be calculated quickly and conveniently using a brief algorithm. An optical wedge is introduced to the measurement system for suppressing the awful measuring error caused by the axial wobbly error. The measurement system can measure the shaft rotation angle at any rotation position, which is the novel usage of the two-dimensional autocollimator. Its optical layout is very simple. Only an optical wedge and two plane mirrors are needed besides the autocollimator. The measurement accuracy of the proposed method is less than ±0.5 arcmin. In the measurement of two worms and gears mechanisms in ADC, the rotation angle error are ±0.05° and ±0.07° respectively, which all satisfies the design demand (±0.1°). The proposed measurement system can be also suits for some engineering fields. |
| Key words: optical measurement rotation angle autocollimator axis wobbly error optical wedge |
| DOI：10.11916/j.issn.1005-9113.15324 |
| Clc Number:O435.1;TH139 |
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| Descriptions in Chinese: |
| 基于大气色散校正器的转角测量系统设计 李文杰1,2，穆全全1*，王少鑫1，杨程亮1，王海萍1，曹召良1，宣丽1 (1. 中国科学院 长春光学精密机械与物理研究所，应用光学国家重点实验室，长春 130033; 2.中国科学院大学，北京 100049) 创新点说明： 基于自准直仪，利用光楔设计一种转角测量系统，不仅可以实现转角的整周测量，而且结构简单，并能抑制轴系倾角回转误差对测量结果的影响，可广泛应用于其他的工程领域。 研究目的： 本文提出一种新的转角测量方法，该方法能抑制轴系倾角回转误差对测量结果的影响。 研究方法： 利用光楔和反射镜的组合设计了新的转角测量方法，可实现转角的整周测量。文中首先通过理论分析原始方法的缺点，在此基础上提出利用光楔代替传统方法中的反射镜，实现光线的偏折，可抑制轴系倾角回转误差对转角测量的影响。并对传统方法和本文所提新方法进行对比试验，验证所提新方法的优越性。 结果： 传统方法和新方法获得的转角测量误差分别为±1.5°和±0.05°，而且本文新方法中测量点的分布更加的随机。利用设计的方法测量两对蜗轮蜗杆机构的转角误差分别为±0.05°和±0.07°，均满足设计要求（±0.1°）。 结论： 本文基于自准直仪，设计了一种转角测量系统，利用光楔代替反射镜，实现对出射光线的偏折，可抑制轴系倾角回转误差对测量结果的影响。该系统不仅结构简单，还能实现转角的整周测量，大大扩展了自准直仪的应用范围。 关键词：光学测量；转角；自准直仪；轴系倾角回转误差；光楔 |
