智能三坐标测量机视觉系统的在线标定技术  

Online Calibration Technology of the Vision System in Intelligent Coordinate Measuring Machine

作　　者：黄风山[1,2] 黄永建[3] 

机构地区：[1]河北科技大学机械电子工程学院,石家庄050054 [2]天津大学精密测试技术及仪器国家重点实验室,天津300072 [3]燕山大学机械工程学院,河北秦皇岛066044

出　　处：《半导体光电》2010年第1期67-70,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(50475116)

摘　　要：提出了智能三坐标测量机视觉系统的在线标定技术。根据摄像机标定的基本原理,利用三坐标测量机沿x、y、z轴移动和正交精度都很高的特点,三坐标测量机带动待标定摄像机产生和白色陶瓷标准球球心(标定特征点)在x、y、z轴方向上的相对平动,得到标定特征点在测头坐标系中不同位置的坐标。引入测头坐标系,建立了该项标定技术的数学模型,给出了标定步骤,组建了标定系统。智能三坐标测量机视觉参数在线标定系统与专用标定系统的比对标定精度在±1μm以内,完全满足工程实际精度要求。An on-line calibration technology of the vision system in intelligent Coordinate Measuring Machine（CMM） is proposed. According to the calibration principles of CCD cameras, the CMM brings the CCD camera to be calibrated to produce the relative translation with respect to the center of the white ceramic standard sphere（the calibration characteristic point） along the x, y, z axis. Thus, the coordinates of the different positions of the calibration characteristic point in the probe coordinate system can be generated adopting the feature of the high translation accuracy of CMM. By introducing the probe coordinate system, the calibration mathematic model is established, the calibration steps are given and the calibration system is set up. The comparing calibration precision between the vision parameters in the calibration system of the intelligent CMM and the special calibration system is within ±1μm, which meets the requirements of the practical accuracy completely.

关 键 词：视觉系统标定 智能三坐标测量机 测头坐标系 数学模型 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]