《计算机应用研究》|Application Research of Computers

基于机器视觉的编码器光栅装配偏心调整技术

Based on machine vision encoder grating assembled eccentric adjustment system design

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作者 王义文,裴振成,刘献礼,丛艳斌,金畅
机构 哈尔滨理工大学 机械动力工程学院,哈尔滨 150080
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文章编号 1001-3695(2013)12-3814-03
DOI 10.3969/j.issn.1001-3695.2013.12.077
摘要 编码器光栅装配的过程中, 光栅实际回转中心与编码器主体轴的回转中心很难重合, 这样会影响编码器的输出信号的精度。为了解决编码器光栅与主轴的偏心问题, 提出一种基于机器视觉的光栅偏心自动调整系统。对光栅表面图像进行分析处理, 对边界跟踪提取及基于Hough变换圆弧检测等算法进行研究。根据光栅装配要求搭建了偏心计算系统的硬件系统。对光栅图像进行预处理及形态学操作, 在分析提取光栅基圆部分圆弧边界的基础上, 通过Hough变换的圆弧检测原理还原出光栅基圆并标定其圆心。介绍了系统通过多幅光栅基圆圆心拟合回转圆, 确定光栅偏心位置。实验结果表明, 基于机器视觉的编码器光栅偏心计算方法成功计算出光栅与主轴的偏心位置, 为光栅偏心调节奠定了基础。采用光栅偏心计算系统在编码器光栅的装配作业中具有很好的可行性。
关键词 机器视觉;光栅;编码器;图像处理;偏心计算
基金项目 国家科技重大专项资助项目(2012ZX04001-041)
本文URL http://www.arocmag.com/article/01-2013-12-077.html
英文标题 Based on machine vision encoder grating assembled eccentric adjustment system design
作者英文名 WANG Yi-wen, PEI Zhen-cheng, LIU Xian-li, CONG Yan-bin, JIN Chang
机构英文名 School of Mechanical & Power Engineering, Harbin University of Science & Technology, Harbin 150080, China
英文摘要 In the process of encoder grating assembly, the center of rotation and grating encoder main shaft is difficult to coincidence which will affect the accuracy of output signal from the encoder. In order to solve the eccentric problem of the encoder grating, this paper put forward a grating eccentric automatic adjustment system based on machine vision to analyse and process the image of the surface of grating. It studied boundary tracking algorithm and arc detection algorithm based on Hough transform. At first, it built the hardware system of eccentric computational system according to the requirement of the grating assembly. Then it made the grating image preprocessing and morphological operations. On the basis of the analysis and the extraction of part of the grating base circle's arc boundary, it restored the base circle of the grating and demarcated the center of circle with the principle of arc detection based on Hough transform. At last, this paper introduced the system which fitting turning circle by the centre of grating base circles and determined the grating eccentric position. The experimental results show that the computational method of eccentricity based on machine vision encoder grating calculates the eccentric position of the grating and the main spindle successfully, lays the foundation for grating eccentric adjustment. The grating eccentric computational system has a very good feasibility in the encoder grating assembly operations.
英文关键词 machine vision; grating; encoder; image processing; eccentric calculation
参考文献 查看稿件参考文献
  [1] 朱沛, 张大伟. 精密定位光栅尺的研究进展[J] . 激光杂志, 2010, 31(1):1-3.
[2] 高贯斌, 王文, 林铿, 等. 圆光栅角度传感器的误差补偿及参数辨识[J] . 光学精密工程, 2010, 18(8):1766-1772.
[3] 王晓东, 宋洪侠, HESSELBACH J. 德国微装配技术研究的几个方向[J] . 机械制造, 2002, 40(9):13-15.
[4] 王晓东, 宋洪侠, 刘超, 等. 基于机器视觉的微小型零件测量与装配控制[J] . 哈尔滨工程大学学报, 2011, 32(9):1117-1122.
[5] 张舞杰, 杨义禄, 李迪, 等. 自动影像测量系统关键算法[J] . 光学精密工程, 2007, 15(2):294-301.
[6] ILLINGWORTH J, KITTLER J. A survey of the Hough transform[J] . Computer Vision, Graphics, and Image Processing, 1988, 44(1):87-116.
[7] 张震, 马驷良, 张忠波, 等. 一种改进的基于Canny算子的图像边缘提取算法[J] . 吉林大学学报, 2007, 45(2):244-248.
[8] 雷家勇, 达飞鹏, 孟广猛. 图像处理中圆心算法研究[J] . 计算机与现代化, 2005(3):26-34.
[9] 王健, 王孝通, 徐晓刚, 等. 基于梯度的随机Hough快速圆检测方法[J] . 计算机应用研究, 2006, 23(8):164-165.
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页码 3814-3816,3827
中图分类号 TP391
文献标志码 A