Camera-based monitoring of the rigid-body displacement of a mandrel in superconducting cable production

被引：4
|
作者：
Hack, E
Leroy, D
机构：
[1] EMPA, Swiss Fed Labs Mat Testing & Res, Lab Elect Metrol, CH-8600 Dubendorf, Switzerland
[2] CERN, AT Div, MAS Grp, CH-1211 Geneva, Switzerland
来源：
OPTICS AND LASERS IN ENGINEERING | 2005年 / 43卷 / 3-5期
关键词：
computer vision; matrix algebra; motion estimation; parameter estimation; rigid-body motion; covariance matrix; accuracy; measurement uncertainty; image sequence; least squares;
D O I：
10.1016/j.optlaseng.2004.05.004
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe a machine vision measurement head that is used to monitor the mandrel position in production of superconducting cables. Two cameras are orthogonally aligned, viewing different sections of the cylindrical part of the mandrel. The use of telecentric lenses obviates the need for re-calibration after the replacement of mandrel. All parameters of rigid-body motion are obtained in linear theory by using a multivariate least-squares fitting procedure on dynamically corresponded sets of target points that vary due to partial blocking by rotating wires. A rigorous analysis of measurement uncertainty is given. (c) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：455 / 474
页数：20
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