Self-calibration of workspace measurement and positioning system by using inter-scanning

REN Yong-jie; ZHU Ji-gui; WU Jun; XUE Bin; YANG Ling-hui

doi:10.3788/OPE.20152303.0609

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Self-calibration of workspace measurement and positioning system by using inter-scanning

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- Self-calibration of workspace measurement and positioning system by using inter-scanning
- Optics and Precision Engineering Vol. 23, Issue 3, Pages: 609-616(2015)
- 作者机构：
  
  1. 天津大学海洋科学与技术学院天津,300072
  2. 天津大学精密测试技术及仪器国家重点实验室天津,300072
  3. 中国民航大学航空自动化学院天津,300300
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152303.0609
  CLC： TH72;TN247
- Received：04 May 2014，
  
  Revised：02 June 2014，
  
  Published：25 March 2015
- 稿件说明：
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任永杰, 邾继贵, 吴军等. 采用互扫描法自动标定工作空间定位系统[J]. 光学精密工程, 2015,23(3): 609-616

REN Yong-jie, ZHU Ji-gui, WU Jun etc. Self-calibration of workspace measurement and positioning system by using inter-scanning[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 609-616
任永杰, 邾继贵, 吴军等. 采用互扫描法自动标定工作空间定位系统[J]. 光学精密工程, 2015,23(3): 609-616 DOI： 10.3788/OPE.20152303.0609.

REN Yong-jie, ZHU Ji-gui, WU Jun etc. Self-calibration of workspace measurement and positioning system by using inter-scanning[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 609-616 DOI： 10.3788/OPE.20152303.0609.

摘要

针对工作空间定位系统(wMPS)现有标定技术效率低

标定程序复杂且须依赖外部测量设备等问题

本文在在研究wMPS测量原理的基础上提出了一种采用互扫描技术的自动标定方法。该方法结合该系统的扫描激光平面测量原理及使用特点

通过在基站上安装已知坐标的接收传感器

采用互扫描技术完成自动标定。文中以两台基站为基础

详细阐述了该方法的数学原理

并给出了基于几何约束的平差模型及其迭代解法。依托天津大学研发的wMPS实验平台对本方法进行了验证

并与基准尺标定法进行了比对。实验结果显示

采用本方法可以实现系统的自动标定

在距离基站5 m内的测量空间内可获得0.6 mm的坐标测量精度。该方法在保证系统测量精度的同时大大提高了系统的测量效率。

Abstract

As workspace Measurement and Positioning System (wMPS) has lower calibration efficiency

complex algorithms and relying on auxiliary equipment

this paper presents a novel self-calibration method by using inter-scanning method. According to the multi-place intersection theory and system application characteristics

the automatic calibration was implemented by a inter-scanning technology on receivers mounted on the laser stations whose coordinates were known in advance. On the basis of two laser stations

the mathematical theory of the method was described

and the optimal algorithm (adjustment model) based on the geometrical constraint characteristics of the system was given in detail. The method was verified on a wMPS experimental platform developed by Tianjin University and was compared with the standard rule calibration method. The experimental results demonstrate that the inter-scanning method is an efficient solution for calibration of the stations

and the accuracy of the system achieves 0.6 mm in the space 5 m away from the station. Thus

the method proposed improves the calibration efficiency of the system while maintaining the measurement accuracy.

关键词

Keywords

references

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