摘要
在现代工业高精度测量需求背景下,Leica AT960激光跟踪仪的精度分析意义重大。激光跟踪测量系统包含激光测距、角度测量等装置,基于球坐标测量原理运行。在Leica AT960的测角精度方面,误差来源包括度盘、轴系加工及大气折射等。实验选取3个点,通过多次测量计算水平与垂直角的中误差,结果显示其重复测角精度超0.5″,符合标定精度。测距精度实验通过两种测量方式对同一直线上的5个点进行测量,结果显示测距精度能达标称的10μm误差范围。激光入射角精度实验表明,测量精度受入射角度的影响,操作时需确保目标球体与仪器对齐。环境因素可能导致测量误差显著增加。点位坐标精度通过多站对公共点进行测量并转换坐标后计算,结果显示不同测站下各点坐标的重复测量精度达10.5μm,与标称值相符。该仪器的整体精度可靠,可为多领域精密测量提供有力支撑。
Under the background of high-precision measurement requirements in modern industry,the accuracy analysis of the Leica AT960 laser tracker is of great significance.The laser tracking measurement system includes devices such as laser ranging and angular measurement,and operates based on the principle of spherical coordinate measurement.In terms of angular measurement accuracy of the Leica AT960,error sources include the encoder,axis machining,and atmospheric refraction.The experiment selected three points and calculated the mean error of horizontal and vertical angles through multiple measurements.The results showed that the repeated angular measurement accuracy exceeded 0.5″,which meets the calibration accuracy.The ranging accuracy experiment measured five points on the same line using two measurement methods,and the results showed that it could reach the nominal error range of 10 micrometers.The laser incident angle accuracy experiment indicated that measurement accuracy is affected by the incident angle,and the target sphere needs to be aligned with the instrument during operation.Environmental factors can significantly increase measurement errors.The point coordinate accuracy was calculated after transforming the coordinates of common points measured by multiple stations.The repeated measurement accuracy of each point's coordinates under different stations reached 10.5 micrometers,which is consistent with the nominal value.The overall accuracy of the instrument is reliable and can provide strong support for precision measurements in various fields.
作者
孙之民
SUN Zhimin(Shanghai Scas Information Technology Co.,Ltd.,Shanghai 200131,China)
出处
《自动化应用》
2025年第12期192-196,共5页
Automation Application
作者简介
孙之民,男,1984年,中级工程师,研究方向为机械精度测量。
