数字同轴全息对刀技术中微细铣刀的自动聚焦方法
作者:
作者单位:

(长春理工大学 跨尺度微纳制造教育部重点实验室, 长春 130022)

作者简介:

孙艺洋(1997-),男,吉林辽源人,硕士研究生,主要从事微纳制造技术研究;

通讯作者:

中图分类号:

基金项目:

国家重点研发计划项目(2018YFB1107403);中国“111”计划项目(D17017);吉林省科技发展计划项目(20190101005JH,20180201057GX).*通信作者:许金凯E-mail:xujinkai@cust.edu.cn


Automatic Focusing Criterion Function for Digital Holograms of Micro Milling Tool
Author:
Affiliation:

(Key Laboratory of Ministry of Education for Cross-Scale Micro and Nano Manufacturing, ChangChun University of Science and Technology, Changchun 130022, CHN)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    数字同轴全息对刀技术中微细铣刀全息再现像的自动聚焦是实现高精度自动对刀的关键技术,其中聚焦评价函数是判别图像质量的依据。通过比较几种常用的聚焦评价函数的评价性能,探讨了数字全息自动对焦过程中刀具的成像特点以及适用的聚焦评价方法,发现小波变换聚焦评价函数能适应高精度聚焦的需要。针对自动调焦问题,提出一种分段递进搜索方法,将搜索过程分为两个过程:大步距粗调和小步距精调,分段搜索最优解。然后比较分析了所提搜索方法与经典的模拟退火算法和Levenberg-Marquardt算法的搜索性能。实验结果表明,所提分段递进搜索方法适用性更强,并通过计算机模拟实验进一步验证了其有效性。

    Abstract:

    The automatic focusing of the holographic reconstructed image of the micro-milling tool in the digital in-line holographic tool setting technology is the key technology for realizing high-precision automatic tool setting, and the focus evaluation function is the basis for discriminating image quality. In this paper, by comparing the performance of several commonly used focusing evaluation functions, the imaging characteristics of the tools in the digital holographic autofocus process and the applicable focusing evaluation method are discussed. Aiming at the problem of automatic focusing, a piecewise progressive search method is proposed, which divides the search process into two processes:coarse adjustment of large step and fine adjustment of small step, and piecewise search for the optimal solution. Then the performance of the proposed search method is compared with that of the classical simulated annealing algorithm and Levenberg-Marquardt algorithm. The experimental results show that the proposed piecewise progressive search method has better applicability, and the computer simulation experiment further verifies the effectiveness of the proposed method.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-12-25
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2021-04-30
  • 出版日期:

漂浮通知

①关于用户登录弱密码必须强制调整的说明
②《半导体光电》微信公众号“半导体光电期刊”已开通,欢迎关注