激光跟踪仪转镜倾斜误差的标定及修正

发布时间：2018-03-26 00:00

本文选题：激光跟踪仪　切入点：几何结构误差　出处：《光学精密工程》2015年05期

【摘要】：为了提高激光跟踪仪的测量精度,分析了跟踪仪的几何结构误差,重点研究了其转镜倾斜误差的标定和修正方法。利用矢量分析和坐标转换相结合的方法建立了跟踪仪转镜倾斜误差模型,推导出了跟踪仪几何空间坐标修正公式,并基于自准直仪、多面棱体和可调反射镜建立了高精度误差标定装置。利用标定装置分析了误差标定方法,通过系统仿真研究了转镜倾斜误差对系统测角误差及最终坐标测量误差的影响。利用误差标定实验检测出的系统转镜倾斜误差约为4″,将其带入坐标修正公式,并与修正前的坐标进行了比对分析。对比结果显示,经误差修正后系统空间坐标测量误差可减小约2×10-6,验证了转镜倾斜误差标定和误差修正方法的有效性,表明利用该方法可在不改变系统硬件结构的基础上提高测量系统的测量精度。
[Abstract]:In order to improve the measuring accuracy of the laser tracker, the geometric structure error of the tracker is analyzed. In this paper, the calibration and correction method of the tilting error of the tracker is studied emphatically, the model of the tilting error of the tracker is established by the method of vector analysis and coordinate transformation, and the correction formula of the geometric space coordinate of the tracker is derived. Based on the autocollimator, the polyhedral prism and the adjustable mirror, the high precision error calibration device is established, and the error calibration method is analyzed by using the calibration device. The influence of rotation mirror tilt error on system angle measurement error and final coordinate measurement error is studied by system simulation. The system rotation mirror tilt error detected by error calibration experiment is about 4 "and brought into coordinate correction formula. The results show that the error of space coordinate measurement can be reduced by about 2 脳 10 ~ (-6) after error correction. The validity of the calibration and error correction method of rotator tilting error is verified. It is shown that this method can improve the measurement accuracy without changing the hardware structure of the system.
【作者单位】：中国科学院光电研究院;
【基金】：国家自然科学基金青年基金资助项目(No.11404334) 国家重大科学仪器设备开发专项资助项目(No.2011YQ120022)
【分类号】：TN24;TH721

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