杨洁

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:数学科学学院

学科:计算数学

办公地点:大连理工大学数学科学学院505

联系方式:0411-84708351-8205

电子邮箱:yangjiee@dlut.edu.cn

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Burr removal from measurement data of honeycomb core surface based on dimensionality reduction and regression analysis

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论文类型:期刊论文

发表时间:2018-11-01

发表刊物:MEASUREMENT SCIENCE AND TECHNOLOGY

收录刊物:SCIE

卷号:29

期号:11

ISSN号:0957-0233

关键字:measurement of honeycomb core; burr removal; dimensionality reduction; regression analysis

摘要:The quantitative evaluation of the shape accuracy of the machined honeycomb cores has always been difficult, due to its typical thin-wall and low-rigidity characteristics. Laser triangulation is adopted in this paper to measure the surface shape of honeycomb cores due to its advantages of high-accuracy and high-speed, but the original measurement is not accurate enough as a result of the inclusive massive burr data. This paper presents an approach to remove burr data of each extracted cell wall based on dimensionality reduction and regression analysis. First, according to their distribution characteristics, burr data are divided into two types: burr I data and burr II data. Second, vertical and horizontal dimensionality reduction, respectively used for removing burr I data and burr II data, are applied to the measured data to reduce the dimension from three to two. Finally, in the 2D space after dimensionality reduction, the distribution line of the cell wall is forecasted with regression analysis, and burrs are removed according to its distance to the distribution line. Experimental results show that the proposed method has an outstanding performance in removing burr data on various shapes of surfaces.