采用激光扫描建模的筒子纱卷绕密度测量方法  

Measurement method of winding density of cheese package based on laser scanning and modeling

作　　者：周其洪[1,2] 孙宝通 岑均豪 占齐宸 ZHOU Qihong;SUN Baotong;CEN Junhao;ZHAN Qichen(Engineering Research Center of Advanced Textile Machinery, Ministry of Education, Donghua University, Shanghai 201620, China;College of Mechanical Engineering, Donghua University, Shanghai 201620, China;Guangzhou Seyounth Automation Technology Co., Ltd., Guangzhou, Guangdong 511400, China)

机构地区：[1]东华大学纺织装备教育部工程研究中心,上海201620 [2]东华大学机械工程学院,上海201620 [3]广州盛原成自动化科技有限公司,广东广州511400

出　　处：《纺织学报》2021年第1期96-102,共7页Journal of Textile Research

基　　金：国家重点研发计划项目(2017YFB1304000)。

摘　　要：为适应智能高质量染色需求,解决当前筒子纱卷绕密度测量精度差、效率低和数字化管控不理想等问题,提出了基于激光位移传感器快速扫描获取数据建立数学模型的筒子纱卷绕密度测量方法。通过控制采样距离和扫描路径及范围,得到充分反映筒子纱形状特征的原始点集。根据不同噪声点的特征和统计学理论,对原始点集加入约束条件实现预处理,通过最小二乘法拟合和旋转面方程对点集分类处理,重建出高精度的筒子纱纱线表面轮廓的数学模型,运用三重积分得到纱线体积,从而计算出精确的卷绕密度。实验结果表明,本文方法相对误差可控制在2.5%以内,标准偏差0.069%,效率高,性能明显优于行业现用方法。In order to meet the requirement of intelligent high-quality dyeing,and solve the problems of poor accuracy,low efficiency and unsatisfactory digital management and control in winding density measurement of cheese yarn packages,a method for measuring the winding density of cheese packages was proposed based on the rapid scanning of laser displacement sensors for data collection and for establishing a mathematical model.By controlling the sampling distance and scanning path and range,the original point set reflecting the texture characteristics and the trace of the yarn in the cheese package was obtained.Based on the characteristics of different noise points and statistics theory,constraints were added to the original point set for preprocessing.After the point set was treated using the least square fitting and rotating surface equation,a high-precision mathematical model of the surface profile of the cheese yarn package was constructed,and the volume of the yarn was obtained through triple integration so as to calculate the accurate winding density.The experimental results show that the relative error of measurement can be controlled within 2.5%,the standard deviation is 0.069%,the efficiency is high,and the performance is obviously better than the existing methods in the industry.

关 键 词：筒子纱 卷绕密度 激光测量 数学建模 数据降噪 智能染色工厂 

分 类 号：TS19[轻工技术与工程—纺织化学与染整工程]