Station-transfer measurement accuracy improvement of laser tracker based on photogrammetry |
| |
| Affiliation: | 1. State Key Laboratory of Tribology & Institute of Manufacturing Engineering, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;2. Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control, Tsinghua University, Beijing 100084, China;3. Mechanical and Energy Engineering Department, South University of Science and Technology of China, Shenzhen 518055, China;1. Japan Aerospace Exploration Agency, 6-13-1 Osawa, Mitaka-shi, Tokyo 181-0015, Japan;2. The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;1. College of Electric and Control Engineering, Xi’an University of Science and Technology, 58 Yan-Ta Road, Xi’an 710054, China;2. Department of Electronic Engineering, National Chin-Yi University of Technology, 57, Sec. 2, Zhongshan Rd., Taiping Dist., Taichung 41170, Taiwan;1. School of Control and Computer Engineering, North China Electric Power University, Changping District, Beijing 102206, China;2. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing 102206, China |
| |
| Abstract: | Laser tracker has been used in a diverse range of applications due to its high accuracy and efficient, specifically as measuring the coordinates of points or scanning shape of objects. In real applications, we often need to measure common points on multi-stations by using this technology if objects are large scale. To ensure every common point within the range of laser tracker, common points are usually placed far from the laser tracker. However, the long distance between common points and laser tracker will decrease the accuracy of the result. In this research, we proposed a new method where photogrammetry and laser tracker are integrally used to measure common points to reduce measurement error. With the help of photogrammetry, we first constructed the geometric constraints of common points. Then, by using graphic correction method, the coordinates of common points on laser tracker will be corrected. Both of the theoretical and experimental study results indicated the great success of improving the measurement accuracy of laser tracker. We consider that this method we reported can highly increase the accuracy of measurement on laser tracker station-transfer. |
| |
| Keywords: | Station-transfer Laser tracker Photogrammetry Geometric constraints Graphic correction method |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
