经纬仪定向误差变化的原因及解决方法

韩光宇; 曹立华; 韩光照

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经纬仪定向误差变化的原因及解决方法

韩光宇, 曹立华, 韩光照

文章导航 > 红外与激光工程 > 2013 > 42(3): 699-702

韩光宇, 曹立华, 韩光照. 经纬仪定向误差变化的原因及解决方法[J]. 红外与激光工程, 2013, 42(3): 699-702.

引用本文:

韩光宇, 曹立华, 韩光照. 经纬仪定向误差变化的原因及解决方法[J]. 红外与激光工程, 2013, 42(3): 699-702.

Han Guangyu, Cao Lihua, Han Guangzhao. Cause of varying of theodolite orientation error and its solution[J]. Infrared and Laser Engineering, 2013, 42(3): 699-702.

Citation:

Han Guangyu, Cao Lihua, Han Guangzhao. Cause of varying of theodolite orientation error and its solution[J]. Infrared and Laser Engineering, 2013, 42(3): 699-702.

经纬仪定向误差变化的原因及解决方法

1.
1援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.
中船重工集团公司第703 研究所,黑龙江哈尔滨150078

基金项目:

中国科学院三期创新项目

详细信息

作者简介:
韩光宇（1972- ），男，副研究员，博士，主要从事光学精密机械设计方面的研究。Email：hanlamost@163.com

中图分类号: TN216

Cause of varying of theodolite orientation error and its solution

1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
2.
No.703 Research Institute of China Shipbuilding Heavy Industry Corporation,Harbin 150078,China

摘要: 方位轴系编码器的定向误差作为光电经纬仪的系统误差，是可以在测量前就测试出来并加以修正。但是属于系统误差的定向误差在工作过程中经常发生随机变化，必然会对测量精度造成很大的影响。文中分析认为调平机构与基座连接时的连接杆与连接孔之间的间隙，是该误差发生变化的原因；在分析了早期的解决方案的基础上，提出了调平机构与抗扭薄膜组合的机械结构模式，并计算了在调平机构7'的角度范围内，抗扭薄膜的弯曲应力、剪切应力均能够满足许用应力，抗扭薄膜内外圆之间的转角小于编码器1的精度，这样既解决了方位轴线角度调整的问题，也保证了在4 000 Nm 的力矩作用下，定向误差没有发生变化。实践证明，该方法对解决定向误差的变化是行之有效的。
- 光电经纬仪 /
- 定向误差 /
- 抗扭薄膜
Abstract: As the systematic error of the optoelectronic theodolite, the orientation error of the azimuth shafting encoder can be numbered and corrected before measuring. But the orientation error, as the systematic error, can constantly vary randomly in the course of work and inevitably make great influence on the measuring accuracy. It is believed that the gap between the joint lever and the switch port, when the leveling gear and the foundation bed are attached to each other, is the cause of error varying. On the basis of analyzing the previous solutions, the mechanical construction model combining the leveling gear and anti-twisting thin film was proposed, and it was found out that within the range of angle 7', both the bending stress and shearing stress of anti-twisting thin film were admissible stresses between the internal circle and the external circle of the anti-twisting thin film. The corner was smaller than 1of the encoder in precision. Thus the problem of azimuth axis angular adjustment was solved and it was assured that no orientation error occurs when it is under the moment of 4 000 Nm. Practice has shown that the approach is effective in solving the orientation error varying.
- optoelectronic theodolite /
- orientation error /
- anti-twisting thin film

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经纬仪定向误差变化的原因及解决方法

1. 1援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. 中船重工集团公司第703 研究所,黑龙江哈尔滨150078

作者简介:
韩光宇（1972- ），男，副研究员，博士，主要从事光学精密机械设计方面的研究。Email：hanlamost@163.com

收稿日期: 2012-07-05
修回日期: 2012-08-03
刊出日期: 2013-03-25

基金项目:

中国科学院三期创新项目

中图分类号: TN216

关键词:

摘要: 方位轴系编码器的定向误差作为光电经纬仪的系统误差，是可以在测量前就测试出来并加以修正。但是属于系统误差的定向误差在工作过程中经常发生随机变化，必然会对测量精度造成很大的影响。文中分析认为调平机构与基座连接时的连接杆与连接孔之间的间隙，是该误差发生变化的原因；在分析了早期的解决方案的基础上，提出了调平机构与抗扭薄膜组合的机械结构模式，并计算了在调平机构7'的角度范围内，抗扭薄膜的弯曲应力、剪切应力均能够满足许用应力，抗扭薄膜内外圆之间的转角小于编码器1的精度，这样既解决了方位轴线角度调整的问题，也保证了在4 000 Nm 的力矩作用下，定向误差没有发生变化。实践证明，该方法对解决定向误差的变化是行之有效的。

English Abstract

Cause of varying of theodolite orientation error and its solution

1. Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;

2. No.703 Research Institute of China Shipbuilding Heavy Industry Corporation,Harbin 150078,China

Received Date: 2012-07-05
Rev Recd Date: 2012-08-03
Publish Date: 2013-03-25

Keywords:

Abstract: As the systematic error of the optoelectronic theodolite, the orientation error of the azimuth shafting encoder can be numbered and corrected before measuring. But the orientation error, as the systematic error, can constantly vary randomly in the course of work and inevitably make great influence on the measuring accuracy. It is believed that the gap between the joint lever and the switch port, when the leveling gear and the foundation bed are attached to each other, is the cause of error varying. On the basis of analyzing the previous solutions, the mechanical construction model combining the leveling gear and anti-twisting thin film was proposed, and it was found out that within the range of angle 7', both the bending stress and shearing stress of anti-twisting thin film were admissible stresses between the internal circle and the external circle of the anti-twisting thin film. The corner was smaller than 1of the encoder in precision. Thus the problem of azimuth axis angular adjustment was solved and it was assured that no orientation error occurs when it is under the moment of 4 000 Nm. Practice has shown that the approach is effective in solving the orientation error varying.