Volume 3 Issue 5
Nov.  2010
Turn off MathJax
Article Contents
ZHANG Xin-jie, WANG Shu-qing, YAN Chang-xiang. Design and analysis for focusing mechanism of space camera[J]. Chinese Optics, 2010, 3(5): 462-466.
Citation: ZHANG Xin-jie, WANG Shu-qing, YAN Chang-xiang. Design and analysis for focusing mechanism of space camera[J]. Chinese Optics, 2010, 3(5): 462-466.

Design and analysis for focusing mechanism of space camera

  • Received Date: 14 May 2010
  • Rev Recd Date: 17 Jul 2010
  • Publish Date: 25 Oct 2010
  • A kind of focusing structure of space camera is presented, which adopts a kind of precision harmonic gear drive. The wave generator in the device is combined with an elliptic cam and a flexible bearing and its output shaft connected ball screws translates the rotational motion to the linear motion and drives the focusing mirror repeated moving along a linear guide. The output rigid wheel is connected with an absolute encoder to detect the displacement of focusing movements. It has the characteristics of big transmission ratio, high precision, compact structure, high efficiency, smooth running etc. According to the practical application of this harmonic gear drive in the space camera, the location relationship between the displacement of focusing structure and the focal plane movement is derived, and the system error is analyzed. Then, the system accuracy is tested with an open-loop control method. Experimental results show that transmission ratio of the instrument is 1∶ 70, and the repeated positional accuracy is 2 m, which meets the requirements of practical applications.

     

  • loading
  • [1] 辛洪兵,谢金瑞,何惠阳,等. 谐波传动技术及其研究动向[J]. 北京轻工业学报 ,1999,17(1):30-36 XIN H B,XIE J R,HE H Y,et al.. Harmonic drive technology and its research tendency[J]. J. Beijing Institute Light Industry,1999,17(1):30-36.(in Chinese) [2] 张新洁,颜昌翔,谢涛. 星载光学遥感器调焦机构的设计[J]. 光学 精密工程 ,2009,17(11):2757-2761. ZHANG X J,YAN CH X,XIE T. Design of focusing mechanism of space remote sensor[J]. Opt. Precision Eng.,2009,17(11):2757-2761.(in Chinese) [3] 张景和. 精密谐波传动在三坐标测量机上的应用[J]. 光学 精密工程 ,1998,6(2):44-48. ZHANG J H. Application of harmonic gear drive to 3-axes measuring machine[J]. Opt. Precision Eng.,1998,6(2):44-48.(in Chinese) [4] 徐灏,邱宣怀,蔡春源,等.机械设计手册第三卷 [M].北京:机械工业出版社,1992:(24)141-166. XU H,QIU X H,CAI CH Y,et al.. Machine Design Handbook[M]. Beijing:Publishing House of Mechanical Industry,1992.(in Chinese) [5] 丁亚林,田海英,王家骐. 空间遥感相机调焦机构设计[J]. 光学 精密工程 ,2001,9(1):36-38. DING Y L,TIAN H Y,WANG J Q .Design on the focusing mechanism of space remote-sensing camera[J]. Opt. Precision Eng.,2001,9(1):36-38.(in Chinese) [6] 安源,齐迎春. 空间相机直线调焦机构的设计[J]. 光学 精密工程 ,2009,17(3):609-614. AN Y,QI Y CH. Design of straight-line focusing mechanism for space camera[J]. Opt. Precision Eng.,2009,17(3):609-614.(in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(4674) PDF downloads(2163) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return