摘 要：基于激光三角法测量原理，分析了激光在机测量精度的影响因素；采用共形映射算法转换复杂曲面三维模型到二维平面，并规划了激光在机测量路径；结合有向包围盒算法控制了传感器的扫描姿态，提高了测量精度与测量效率，实现了对激光在机测量路径的优化。开展了线激光在机测量复杂曲面实验，结果表明，与现有的测量策略相比，优化后的激光在机测量精度与效率明显提升。
关键词：激光在机测量；测量精度；路径规划；共形映射
DOI:10.19850/j.cnki.2096-4706.2021.20.041
中图分类号：TP212 文献标识码：A 文章编号：2096-4706（2021）20-0160-04
Research on Accuracy Analysis and Path Optimization of Complex Curved Surface Laser on-Machine Measurement
ZHAO Wenqiang1, GUO Wei 2, DING Guozhi 1
(1.Beijing Xinghang Electro-mechanical Equipment Co., Ltd., Beijing 100074, China; 2.Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
Abstract: Based on the principle of laser triangulation, the influencing factors of laser on-machine measurement accuracy are analyzed; the conformal mapping algorithm is used to convert the three-dimensional model of complex curved surface to two-dimens ional plane, and the laser on-machine measurement path is planned; combined with the directed bounding box algorithm, the scanning attitude of the sensor is controlled, the measurement accuracy and efficiency are improved, and the laser on-machine measurement path is optimized.The experiment of line laser on-machine measurement complex curved surface is carried out, the results show that compared with the existing measurement strategies, the accuracy and efficiency of the optimized laser on-machine measurement are significantly improved.
Keywords: laser on-machine measurement; measurement accuracy; path planning; conformal mapping
参考文献：
[1] 刘强，郇极 . 航空航天制造与现代数控技术及装备 [J]. 中国制造业信息化，2005（3）：64-66.
[2] 夷宏明 . 复杂曲面在机激光扫描测量技术研究 [D]. 南京：南京航空航天大学，2016.
[3] 王永青，冀志超，侯博，等 . 基于粒子群算法的三维扫描点云数据在机配准 [J]. 组合机床与自动化加工技术，2016（12）：23-26.
[4] 庄葆华，王少清，蒋诚志，等 . 激光三角位移计接收光功率与被测表面倾斜的关系及倾斜角测量 [J]. 中国激光，1995（8）：596-600.
[5] 黄战华，蔡怀宇，李贺桥，等 . 三角法激光测量系统的误差分析及消除方法 [J]. 光电工程，2002（3）：58-61.
[6] AGUILAR J J，SANTOLARIA J，GUILLOMIA D，et al. Accuracy analysis of laser scanning probes used in coordinate measurement：simulation and experiments[J].VDI BERICHTE，2004：739-744+797.
[7] PHAN N D M，QUINSAT Y，LAVERNHE S. Path Planning of a Laser-scanner with the Control of Overlap for 3d Part Inspection [J].Procedia CIRP，2018，67：392-397.
[8] MARTÍNEZ S，CUESTA E，BARREIRO J，et al.Analysis of laser scanning and strategies for dimensional and geometrical control[J].The International Journal of Advanced Manufacturing Technology，2010，46（5-8）：621-629.
[9] PHAN N D M，QUINSAT Y，LAVERNHE S，et al.Scanner path planning with the control of overlap for part inspection with an industrial robot [J].The International Journal of Advanced Manufacturing Technology，2018，98（1-4）：629-643.
[10] AHMET C，ÜNÜVAR A，et al. A novel iso-scallop toolpath generation for efficient 5-axis machining of freeform surfaces [J].The International Journal of Advanced Manufacturing Technology，2010，51（9-12）：1083-1098.
作者简介：赵文强（1979.08—），男，汉族，新疆人，高级工程师，硕士，研究方向：先进制造技术研究与生产管理。