激光跟踪测量系统角度自动校正装置设计

激光跟踪测量系统是目前最新型的便携式空间大尺寸坐标测量系统，利用激光干涉测长、精密测角及目标跟踪技术，可对任意点的空间位置进行实时跟踪测量。然而，目标反射器接收角度的大小严重影响了激光跟踪测量系统角度测量精度，为解决激光跟踪测量系统在动态测量中因角锥棱镜逆反射器接收角度范围限制而导致无法测量问题，研制开发了一种能使激光跟踪测量系统在动态条件下连续测量的角度自动校正装置。它主要由精密圆形导轨和角度方位自动调节机构组成，能使角锥棱镜在动态测量过程中始终指向激光跟踪测量系统，从而实现在动态条件下的连续工作。最后利用研制角度自动校正装置对激光跟踪测量系统进行了角度误差补偿实验，结果表明该装置使激光跟踪测量系统的水平角测量误差由34.69µm减小到9.71µm，垂直角测量误差由35.43µm减小到10.03µm，从而有效地提高了激光跟踪测量系统的角度测量精度。

Design of angular automatic calibration mechanism for laser tracker system

In order to resolve the problem that Laser Tracker System(LTS) can not continuously measure Corner Cube Retro-reflector(CCR) position in dynamic conditions for CCR's receivable angle is restricted,an angular automatic calibration mechanism for LTS is designed to measure the CCR positions in real time.The calibration mechanism mainly is consists of a precision circular guide-way and a angular automatic adjustment device,which can make the CCR track the laser beam emitted from LTS all the time.The designed calibration mechanism and Hexagon Globle9128 coordinate measuring machine are used to compensate the angular measuring error of LTS.The experimental results demonstrate that the maximum angular measuring error of LTS in measuring distance of 0.752 m is decreased sharply from 34.69 μm to 9.71 μm in horizontal direction and from 35.43 μm to 10.03 μm in vertical direction,which shows the LTS angular measuring accuracy is effectively improved.