刘海波

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:机械工程学院

学科:机械电子工程. 机械制造及其自动化

办公地点:机械工程学院知方楼5051

联系方式:座机:0411-84707276

电子邮箱:hbliu@dlut.edu.cn

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Precise on-machine extraction of the surface normal vector using an eddy current sensor array

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论文类型:期刊论文

发表时间:2016-11-01

发表刊物:MEASUREMENT SCIENCE AND TECHNOLOGY

收录刊物:SCIE、EI、Scopus

卷号:27

期号:11

ISSN号:0957-0233

关键字:normal vector; eddy current; on-machine; measurement; error compensation

摘要:To satisfy the requirements of on-machine measurement of the surface normal during complex surface manufacturing, a highly robust normal vector extraction method using an Eddy current (EC) displacement sensor array is developed, the output of which is almost unaffected by surface brightness, machining coolant and environmental noise. A precise normal vector extraction model based on a triangular-distributed EC sensor array is first established. Calibration of the effects of object surface inclination and coupling interference on measurement results, and the relative position of EC sensors, is involved. A novel apparatus employing three EC sensors and a force transducer was designed, which can be easily integrated into the computer numerical control (CNC) machine tool spindle and/or robot terminal execution. Finally, to test the validity and practicability of the proposed method, typical experiments were conducted with specified testing pieces using the developed approach and system, such as an inclined plane and cylindrical and spherical surfaces.