1. Nanjing Institute of Technology, School of Automation, Nanjing, Jiangsu 211167, China
2. School of Instrument Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China
Abstract:To implement the accurate calibration of large serial industrial robot, a sequential multi-lateration measurement system of single laser tracker is presented. The system only needs single laser tracker to measure the end position of industrial robots in different base stations. The end position of robots is calculated based on the multilateral measurement method. Due to the distance data needed in the calculation, the measurement uncertainty of position can be effectively reduced. Firstly, the simulation model of the measurement system is established. The influence of the number of the measuring points, the distribution shape, the measuring distance and the positioning accuracy of industrial robots on the measuring accuracy of the proposed system is intensively studied. Secondly, according to the analysis results, the construction scheme of the sequential multi-station measurement system based on single laser tracker is determined. The experimental results show that the measurement error of the system is only 0.023mm at 2.5m distance, which is better than the accuracy of laser tracker. It can satisfy the measurement accuracy requirement of parameters calibration of the large serial industrial robot.
乔贵方,孙大林,温秀兰,宋光明,张颖,宋爱国. 面向机器人标定的单激光跟踪仪顺序多站式测量系统建模与分析[J]. 计量学报, 2020, 41(11): 1313-1320.
QIAO Gui-fang,SUN Da-lin,WEN Xiu-lan,SONG Guang-ming,ZHANG Ying,SONG Ai-guo. Modeling and Analysis of Sequential Multi-lateration Measurement System Based on Single Laser Tracker for Robot Calibration. Acta Metrologica Sinica, 2020, 41(11): 1313-1320.
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