基于多线激光扫描的叶片轮廓快速测量系统标定方法

发布时间：2018-01-13 10:30

本文关键词：基于多线激光扫描的叶片轮廓快速测量系统标定方法　出处：《纳米技术与精密工程》2017年06期 　论文类型：期刊论文

【摘要】：针对现今叶片轮廓测量时,在保证测量精度的前提下提高测量速度的需求,结合工程经验与线激光扫描快速准确的特点,本文提出一种以多个线激光扫描传感器为主体的叶片轮廓快速测量系统,该系统由3个位置固定的线激光扫描传感器完成叶片轮廓测量.在理论上3个传感器测量坐标系之间的旋转矩阵中的未知参数是确定的,故这3个坐标系之间不存在由相对运动引起的直线度误差与定位误差等,主要存在由于安装产生的垂直度误差与平移误差等人为因素误差,因此本文提出并推导了该测量系统坐标系全局标定数学模型,并给出了标定过程与标定结果,通过实际测量叶片轮廓验证了该系统与测量机的测量对比误差为±0.03 mm,测量周期不超过10 s,满足实际测量要求.
[Abstract]:In view of the need to improve the measuring speed under the premise of guaranteeing the measuring accuracy, combining with the engineering experience and the characteristics of fast and accurate line laser scanning, this paper aims at the requirement of blade profile measurement. In this paper, a fast measuring system of blade profile based on multiple linear laser scanning sensors is presented. The system is composed of three linear laser scanning sensors with fixed position to measure the blade profile. In theory, the unknown parameters in the rotation matrix between the three sensor measuring coordinates are determined. Therefore, there is no straightness error and positioning error caused by relative motion between these three coordinate systems, but there are some artificial errors such as vertical error and translation error caused by installation. Therefore, this paper presents and deduces the global calibration mathematical model of the measuring system, and gives the calibration process and the calibration results. The comparison error between the system and the measuring machine is 卤0.03 mm and the measuring period is less than 10 s, which meets the requirement of practical measurement.
【作者单位】：精密测试技术及仪器国家重点实验室(天津大学);
【基金】：国家自然科学基金资助项目(61473205) 天津市科技支撑计划资助项目(14ZCZDGX00003)
【分类号】：TN249;TP212.9
【正文快照】： 目前在叶片轮廓检测中应用最多的测量手段是高精度的三坐标测量机.由于叶片的需求量增加,三坐标测量机已不能满足叶片批量生产的速度要求[1].激光扫描测量技术测量速度快,测量精度适中,一次扫描可获得叶片表面大量点云数据,在现代测量领域中得到广泛的应用[2].与三坐标测量机

【相似文献】