Design of support distribution for attitude-adjusting mechanism of large lens

ZHANG Ya-nan; SHEN Li-li; SHEN Wei-xing; CHEN Ming-yi

doi:10.3788/OPE.20101812.2624

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Design of support distribution for attitude-adjusting mechanism of large lens

Article | 更新时间：2020-08-12

- Design of support distribution for attitude-adjusting mechanism of large lens
- Optics and Precision Engineering Vol. 18, Issue 12, Pages: 2624-2632(2010)
- 作者机构：
  
  1. 上海大学机电工程与自动化学院,上海 200072
  2. 中国科学院上海光学精密机械研究所,上海201800
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20101812.2624
  CLC： TH115;TH703
- Received：20 July 2010，
  
  Revised：27 October 2010，
  
  Published Online：25 December 2010，
  
  Published：25 December 2010
- 稿件说明：
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章亚男, 沈丽丽, 沈卫星, 陈明仪. 大口径透镜姿态调整机构的支承分布设计[J]. 光学精密工程, 2010,18(12): 2624-2632

ZHANG Ya-nan, SHEN Li-li, SHEN Wei-xing, CHEN Ming-yi. Design of support distribution for attitude-adjusting mechanism of large lens[J]. Editorial Office of Optics and Precision Engineering, 2010,18(12): 2624-2632
章亚男, 沈丽丽, 沈卫星, 陈明仪. 大口径透镜姿态调整机构的支承分布设计[J]. 光学精密工程, 2010,18(12): 2624-2632 DOI： 10.3788/OPE.20101812.2624.

ZHANG Ya-nan, SHEN Li-li, SHEN Wei-xing, CHEN Ming-yi. Design of support distribution for attitude-adjusting mechanism of large lens[J]. Editorial Office of Optics and Precision Engineering, 2010,18(12): 2624-2632 DOI： 10.3788/OPE.20101812.2624.

摘要

为了设计大口径透镜姿态调整机构

研究了三顶三拉调平结构布置方式的调节性能及其对受力变形和光束质量的影响。采用几何方法

得出了三顶三拉结构在任意三角形布置下升高量与调整角度变化的关系

定义了角度调整的相关系数;利用有限元分析软件分析了3类支承点布置情况下调节平板的变形情况。分析结果表明

三顶三拉调整机构具有调整量可计算的特点

当调节平板的尺寸为580 mm570 mm20 mm

采用等腰三角形支承点布置方式时

重力引起的最大变形为12.51 m。对采用了等腰三角形三顶三拉结构的透镜姿态调整机构进行了装校调试及打靶实验

结果证实了该布点方式对姿态调整的有效性和调整完成后精度的稳定性。

Abstract

To design an attitude adjusting mechanism for large lenses

the adjusting characteristics of a three-pod adjusting structure and its effect on the force and deformation were analyzed. On the basis of the geometrical method

the relationship between the length of each pod and the plate angle variation was obtained under the arbitrary triangle layout of 3-pod adjusting structure

and the correlation coefficient was thus defined. Furthermore

the Finite Element Method(FEM) was used to analyse the deformation of the adjusting plate with three types of support layouts. The results show that the adjusting values of 3-pod mechanism can be calculated.For a plate with the size of 580 mm570 mm20 mm

the maximum deformation caused by gravity could be 12.51 m while the isoscele triangle support layout is adopted. Finally

the attitude adjusting mechanism based on the 3-pod isoscele triangle support layout was calibrated and adjusted

the results prove that it is effective in attitude adjusting and accuracy stability in target-firing experiments.

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Keywords

references

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