摘要
wMPS测量系统是一种新型的基于光电扫描的坐标测量系统,当系统工作时,激光测站分布在测量空间四周,扫描信号覆盖整个工作空间,位置传感器通过扫描信号测量与多个测站之间的方位角计算三维坐标。与其他测量系统相比,具有能够同时跟踪测量多个目标、抗干扰能力强、自动化程度高、简单易用等特点,适用于现场条件下的大尺寸测量。针对数字化装配的需求,介绍了系统的组成及结构,通过几何关系推导出系统的测量原理,给出了测量的几何模型,搭建了完整的验证平台。测量结果表明:系统的角度测量重复性精度优于5″,坐标测量精度优于0.5 mm。
WMPS is a novel coordinate measuring system based on optoelectronic scanning. When it works, laser-stations are distributed around the workspace, and the scanning signals cover the entire area. Location sensors use these signals to obtain the bearing angles to multiple stations, and calculate the spatial cooradinate. Compared with other measuring systems, it is suitable for on-field large-scale measurements because of its robust parallel measurement capability, strong anti-interference and good ease-to-use. According to the requirements of digital assembly, the components and structure of this system were introduced, the measuring principal was derived by geometry relationship and the metrology model was also given. At last, a complete prototype platform was built. The measuring results show that the repeatability accuracy of angle measurement is higher than 5 arc-seconds and the coordinate deviation is less than 0.5mm in 5m×5m×3m area.
出处
《红外与激光工程》
EI
CSCD
北大核心
2011年第10期2014-2019,共6页
Infrared and Laser Engineering
基金
国家自然科学基金重点项目(50735003)
天津市科技支撑项目(08ZCGYGX11800)
关键词
三维坐标测量
计算机辅助装配
wMPS
坐标自动跟踪测量
3D coordinate measurement
computer-aid assembly
wMPS
coordinate automatic tracking measurement
