摘要
针对智能制造过程中大尺寸复杂零部件的隐蔽点精密测量难题,在现有的激光扫描式大空间测量定位系统基础上,提出了一种多测量节点融合的激光扫描组合式测量方法在,该方法以多测量节点距离为约束,建立了多测量节点融合的隐蔽点测量模型以及非线性最小二乘解算模型。通过SolidWorks三维建模与MATLAB仿真分析,验证了该方法的可行性与鲁棒性。仿真结果表明,融合测量节点数达到9个后,测量结果趋于收敛,在15 m的测量范围内,融合测量距离测量精度优于0.2 mm,各坐标分量重复测量精度均优于0.05 mm。车前盖隐蔽区域测量实验结果表明融合测量精度优于0.23 mm,满足大尺寸复杂零部件隐蔽点精密测量应用要求。
For the precision measurement of hidden-points of large and complex parts in intelligent manufacturing process,a laser scanning combination measurement method is discussed in this paper,which has considered a multimeasuring nodes integration mode based on existing large-space laser scanning measuring and positioning system.This method,which is constrained by the distance of multi-measuring nodes,establishes nonlinear least squares functions and a hidden-points measurement model of multi-measuring nodes integration.The feasibility and robustness of this method are verified by SolidWorks 3D modeling and MATLAB simulation.The simulation shows that the measurement results of system become converged when the number of measurement nodes reaches 9 or more.Within the range of 15 m,the accuracy fusion ranging precision is better than 0.2 mm and the repeatability is better than 0.05 mm in each coordinate.The result of hood measurement experiment of hidden-points shows that the accuracy of multi-nodes integration mode is better than 0.23 mm,which meets the requirements of large and complex parts hidden-points precision measurement application.
作者
刘青
雍晟晖
任化帅
康帅
LIU Qing;YONG Shenghui;REN Huashuai;KANG Shuai(Engineering Training Center,Xi'an University of Technology,Xi'an 710054,China;School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,China)
出处
《激光杂志》
北大核心
2020年第9期32-39,共8页
Laser Journal
基金
国家自然科学基金项目(No.51875447)
陕西省重点研发计划(No.S2018-YF-ZDGY-0583)。
关键词
大空间定位
多节点融合
隐蔽点测量
large space position
multi-nodes integration
hidden-points measurement
