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Cyclic optimisation for localisation in freeform surface inspection

机译:在自由曲面检查中定位的循环优化

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摘要

Increasing demands on precision manufacturing of parts with freeform surfaces have been observed in the last several years. Although significant progress has been made in precision machining of freeform surfaces, inspection of such surfaces remains a difficult problem. A crucial issue in surface inspection is localisation of the design coordinate frame on a measurement machine frame. This paper presents a cyclic optimisation, where a closed-form solution is obtained in each iteration, for the localisation. The computational efficiency, robustness to the initial conditions and accuracy of the algorithm are assessed via experiments, and in the localisation process, the computation of the closest point is a vital step. The data structures of approximated nearest nodes and topological neighbour facets are combined to speed up the closest point calculation. The simulation experiments indicate that the presented method is effective.
机译:在过去的几年中,对具有自由曲面的零件进行精密制造的要求不断提高。尽管在自由曲面的精密加工中已经取得了重大进展,但是对这种表面的检查仍然是一个难题。表面检查中的一个关键问题是设计坐标框架在测量机器框架上的定位。本文提出了一种循环优化方法,在该方法中,每次迭代都获得一个封闭形式的解,以进行本地化。通过实验评估了计算效率,对初始条件的鲁棒性和算法的准确性,在定位过程中,最近点的计算是至关重要的一步。近似的最近节点和拓扑邻居面的数据结构被组合以加快最近点的计算。仿真实验表明该方法是有效的。

著录项

  • 来源
    《International Journal of Production Research》 |2011年第4期|p.361-374|共14页
  • 作者

    Yi Xu; Jing Jiang; Zexiang Li;

  • 作者单位

    Department of Control and Mechatronics Engineering, Harbin Institute of Technology Shenzhen Graduate School, ShenZhen, China;

    Faculty of Engineering and Information Technology, University of Technology Sydney, Australia;

    Department of Electrical and Electronic Engineering, School of Engineering, Hong Kong University of Science and Technology, Hong Kong, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    freeform surface inspection; cyclic optimisation; localisation; approximated nearest node;

    机译:自由曲面检查;周期性优化;本土化;近似最近节点;

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