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Vision-based calibration/compensation technique for automatic stiffener bonder
Ye, Su1,2; Ye, Yutang1; Xie, Yu1; Luo, Ying1; Du, Chunlei2
2017
Source PublicationProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
ISSN0954-4054
Volume231Issue:1Pages:167-180
AbstractThis study developed a novel error compensation method aimed at eliminating placement error caused by hand-eye calibration and pick-and-place tool motions in automatic stiffener bonder for flexible printed circuit. Using the transformation of homogeneous coordinates to develop an error model of the system describing the coupling of errors among various coordinate systems, the least squares method is used to calculate the unknown model parameters. The experiment results demonstrate that this error compensation method reduced placement error by an order of magnitude. The mounting precision throughout the entire work area was ±0.046mm at 3sigma, and for flexible printed circuit products with a specification limit of 0.1 mm, the process capability index of the automatic stiffener bonder in this study was 2.19. This represents that the system is capable of fully satisfying the precision requirements of flexible printed circuit stiffener bonding. The proposed system employing a vibrating feeder bowl and machine vision-aided target positioning is applicable to a variety of stiffeners, which enhances production flexibility. The proposed error model considers the complex coupling effect of the errors among multiple coordinate systems in hand-eye calibration, without the need of detecting and calculating the calibration error item by item, and takes into account the errors produced by the rotation and downward pressing motions of the pick-and-place tool.
KeywordBonding - Calibration - Errors - Flexible electronics - Least squares approximations - Printed circuits
Indexed ByEi
Language英语
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8881
Collection微电子装备总体研究室(四室)
Affiliation1.School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, Sichuan; 610054, China;
2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China
Recommended Citation
GB/T 7714
Ye, Su,Ye, Yutang,Xie, Yu,et al. Vision-based calibration/compensation technique for automatic stiffener bonder[J]. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture,2017,231(1):167-180.
APA Ye, Su,Ye, Yutang,Xie, Yu,Luo, Ying,&Du, Chunlei.(2017).Vision-based calibration/compensation technique for automatic stiffener bonder.Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture,231(1),167-180.
MLA Ye, Su,et al."Vision-based calibration/compensation technique for automatic stiffener bonder".Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 231.1(2017):167-180.
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