激光跟踪仪测量工业机器人位置距离准确度的不确定度研究

Uncertainty Evaluation of Industrial Robot's Position Distance Accuracy by the Laser Tracker

为了评定工业机器人位置距离准确度测量结果的分散性,在研究激光跟踪仪的测量原理和工业机器人位置距离准确度测量方法的基础上,分析了影响测量结果的各不确定度因素及其相互影响关系,提出了综合评估测量不确定度的方法。结果表明该方法分析结果可靠。评定结果可作为仪器精度的现场评估、不同测量仪器的现场测量精度比较以及分析环境变化、人员操作等对测量结果影响的依据,并为提高综合测量精度提供方向指导。

For assessing dispersiveness ofmeasuring result of positional distance accuracy （ADp） of industrial robot, based on the research on the measuring principle of the Laser Tracker and the measuring method of ADp for industrial robot, some work was done for analyzing uncertain factors and their influence on the measuring result of ADp of industrial robot, and then a comprehensive method for assessing the uncertainty of ADp was developed. The results show that the method is reliable. Evaluation result provides the basis for as-sessing local precision of Laser Tracker, contrasting precision of different instruments, and analyzing the influence of some uncertain factors （such as environmental change and personnel operation） on measuring resultes, and it is beneficial for improving comprehensive accuracy of measurement.