Research on tracking parameter calibration method of target miss-distance for laser tracker

DOI

10.2991/icmse-15.2015.194How to use a DOI?

Keywords

Miss-distance detecting, image rotation, parameter calibration, laser tracker.

Abstract

Laser tracker is an important optical instrument for precise geometric coordinate measurement in large scale. Position sensitive detector (PSD) is one core miss-distance detecting sensor of laser tracker to achieve precise cooperation target tracking. The tracking parameter calibration accuracy based on PSD has remarkably direct influence on the performance of tracking and measurement. Firstly, a laser tracking measurement system is presented, and the working principle of the system’s tracking unit based on PSD is introduced. Then the hardware and software design of miss-distance detecting module is described on the basis of PSD according to the actual demand. The experimental result shows that the stability of spot position is better than±2.0 m in the square effective area (4×4mm2). Finally, from precise detecting principle and system structure analysis, the forming mechanisms of tracking zero point and phenomena of laser spot rotating with azimuth axis rotation are analysed. Their influence on target tracking is discussed, and two novel calibration methods of tracking zero point and phase angle of laser spot rotating coordinate are proposed. By these calibration methods and precision displacement experiment the relationship model in tracking state between PSD displacement and target miss-distance based on data fitting and interpolation is set up. Experimental results indicate that the detection module design and the tracking parameter calibration method can well meet the demand of the precise and fast target tracking.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Deng-Feng Dong
AU  - Zhi Cheng
AU  - Cheng-Jun Cui
AU  - Weihu Zhou
AU  - Rong-Yi Ji
PY  - 2015/12
DA  - 2015/12
TI  - Research on tracking parameter calibration method of target miss-distance for laser tracker
BT  - Proceedings of the 2015 6th International Conference on Manufacturing Science and Engineering
PB  - Atlantis Press
SP  - 1067
EP  - 1074
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-15.2015.194
DO  - 10.2991/icmse-15.2015.194
ID  - Dong2015/12
ER  -