scholarly journals Verification of Vickers indenter geometry by means of three-dimensional coordinate measurement

2018 ◽  
Vol 1065 ◽  
pp. 062011
Author(s):  
S Takagi ◽  
Y Tanaka ◽  
Y Seino
Keyword(s):  
Three Dimensional ◽  
Coordinate Measurement ◽  
Vickers Indenter ◽  
Three Dimensional Coordinate ◽  
Indenter Geometry

Research on the influence of background light on the accuracy of a three-dimensional coordinate measurement system based on dual-PSD

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaohong Lu ◽  
Yu Zhou ◽  
Jinhui Qiao ◽  
Yihan Luan ◽  
Yongquan Wang
Keyword(s):  
Neural Network ◽  
Measurement System ◽  
Bp Neural Network ◽  
Measurement Accuracy ◽  
Three Dimensional ◽  
Electrical Method ◽  
Content Type ◽  
Coordinate Measurement ◽  
Background Light ◽  
Three Dimensional Coordinate

Purpose The purpose of this paper is to analyze the measurement error of a three-dimensional coordinate measurement system based on dual-position-sensitive detector (PSD) under different background light. Design/methodology/approach The mind evolutionary algorithm (MEA)-back propagation (BP) neural network is used to predict the three-dimensional coordinates of the points, and the influence of the background light on the measurement accuracy of the three-dimensional coordinates based on PSD is obtained. Findings The influence of the background light on the measurement accuracy of the system is quantitatively calculated. The background light has a significant influence on the prediction accuracy of the three-dimensional coordinate measurement system. The optical method, electrical method and photoelectric compensation method are proposed to improve the measurement accuracy. Originality/value BP neural network based on MEA is applied to the coordinate prediction of the three-dimensional coordinate measurement system based on dual-PSD, and the influence of background light on the measurement accuracy is quantitatively analyzed.

scholarly journals High-NA fiber point-diffraction interferometer for three-dimensional coordinate measurement

2014 ◽  
Vol 22 (21) ◽  
pp. 25550 ◽  
Author(s):  
Daodang Wang ◽  
Xixi Chen ◽  
Yangbo Xu ◽  
Fumin Wang ◽  
Ming Kong ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Coordinate Measurement ◽  
Three Dimensional Coordinate

Three-Dimensional Coordinate Measurement with Point-Diffraction Interferometer Based on Levenbery-Marquardt Algorithm

2014 ◽  
Vol 34 (8) ◽  
pp. 0812001
Author(s):  
王道档 Wang Daodang ◽  
王福民 Wang Fumin ◽  
陈茜茜 Chen Xixi ◽  
孔明 Kong Ming ◽  
赵军 Zhao Jun
Keyword(s):  
Three Dimensional ◽  
Coordinate Measurement ◽  
Marquardt Algorithm ◽  
Three Dimensional Coordinate

Optimal Layout of Three-Dimensional Coordinate Measurement System Based on Laser Multi-Lateration

2014 ◽  
Vol 41 (7) ◽  
pp. 0708001
Author(s):  
胡进忠 Hu Jinzhong ◽  
余晓芬 Yu Xiaofen ◽  
任兴 Ren Xing ◽  
赵达 Zhao Da
Keyword(s):  
Measurement System ◽  
Three Dimensional ◽  
Optimal Layout ◽  
Coordinate Measurement ◽  
Three Dimensional Coordinate
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