scholarly journals An accuracy measurement method for star trackers based on direct astronomic observation

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Ting Sun ◽  
Fei Xing ◽  
Xiaochu Wang ◽  
Zheng You ◽  
Daping Chu
Keyword(s):  
Measurement Method ◽  
Accuracy Measurement ◽  
Astronomic Observation

Research on the on-line dimensional accuracy measurement method of conical spun workpieces based on machine vision technology

Measurement ◽  
2019 ◽  
Vol 148 ◽  
pp. 106881 ◽  
Author(s):  
Gangfeng Xiao ◽  
Yongting Li ◽  
Qinxiang Xia ◽  
Xiuquan Cheng ◽  
Weiping Chen
Keyword(s):  
Machine Vision ◽  
Measurement Method ◽  
Dimensional Accuracy ◽  
Accuracy Measurement ◽  
On Line

scholarly journals Development of Motion Accuracy Measurement Method of Five Axis NC Machine Tools with ISO230-4

2006 ◽  
Vol 72 (7) ◽  
pp. 873-877
Author(s):  
Masaki USHIO ◽  
Norifumi KURMAE ◽  
Masahide KOUYA ◽  
Hiroyuki NARAHARA ◽  
Hiroyuki KORESAWA ◽  
...  
Keyword(s):  
Machine Tools ◽  
Measurement Method ◽  
Accuracy Measurement ◽  
Nc Machine ◽  
Nc Machine Tools ◽  
Five Axis

scholarly journals Problems of Accuracy of Measurements of Curves on International Transport Corridors of Ukraine

2018 ◽  
pp. 56-60
Author(s):  
A. Matvienko ◽  
A. Shevchenko
Keyword(s):  
High Speed ◽  
Measurement Method ◽  
Energy Resources ◽  
Maximum Speed ◽  
Saving Energy ◽  
Accuracy Measurement ◽  
Accuracy Of Measurements ◽  
International Transport ◽  
The Cost

The analysis of the line layout on curves and straight sections of international transport corridors, calculations based on the accuracy measurement method for rapid and high-speed traffic, confirmed the need to take into account the scope of work, the cost of reconstructing curves and saving energy resources to establish rational layout parameters in accordance with a specified level of maximum speed.

scholarly journals On-line Measurement Method and Technical Scheme of Transmission Line Crossing Point Based on Machine Vision

2021 ◽  
Vol 2143 (1) ◽  
pp. 012035
Author(s):  
Jie Tang ◽  
Zhidu Huang ◽  
Zhimei Cui
Keyword(s):  
Machine Vision ◽  
Transmission Line ◽  
Measurement Method ◽  
Accuracy Measurement ◽  
Line Measurement ◽  
On Line ◽  
Increasing Demand ◽  
Measurement Efficiency ◽  
Crossing Point ◽  
Line Crossing

Abstract With the increasing demand for high voltage and UHV transmission, higher and higher requirements are put forward for transmission line monitoring and fault diagnosis. The traditional line measurement method has many shortcomings, which cannot ensure the measurement accuracy, measurement efficiency and high cost. Based on this, this paper first studies the principle of machine vision on-line measurement, then analyses the on-line measurement process of transmission line crossing point based on machine vision, and finally gives the error source and amelioration measures of transmission line crossing point on-line measurement.

Dynamic tracking and pointing accuracy measurement method of space laser communication system

2018 ◽  
Vol 39 (5) ◽  
pp. 150-154
Author(s):  
Wu Lei ◽  
Hao Shujie ◽  
Xie Xuanmei ◽  
Li Gaoping ◽  
Yu Bing ◽  
...  
Keyword(s):  
Communication System ◽  
Measurement Method ◽  
Laser Communication ◽  
Accuracy Measurement ◽  
Dynamic Tracking ◽  
Pointing Accuracy

scholarly journals Research on the Dimensional Accuracy Measurement Method of Cylindrical Spun Parts Based on Machine Vision

2018 ◽  
Vol 167 ◽  
pp. 03010
Author(s):  
Xiao Gangfeng ◽  
Zhong Xingwei ◽  
Shen Weixian ◽  
Xia Qinxiang ◽  
Chen Weiping
Keyword(s):  
Machine Vision ◽  
Measurement Method ◽  
Dimensional Accuracy ◽  
New Method ◽  
Edge Detector ◽  
Manual Measurement ◽  
Accuracy Measurement ◽  
Canny Edge ◽  
Low Efficiency ◽  
Relative Errors

A new method for measuring the dimensional accuracy of the cylindrical spun parts based on machine vision was proposed to overcome the artificial deviation and low efficiency of manual measurement. The image acquisition system of machine vision was built up. The methods of image processing and edge extraction of cylindrical spun parts were studied. The straightness and ovality of the cylindrical spun parts were obtained by the proposed new method. The results showed that the edge contour of the cylindrical spun parts extracted by Canny edge detector is better than Sobel and Prewitt edge detector. The dimensional accuracy of the cylindrical spun parts can be obtained accurately by the proposed measurement method based on machine vision. The relative errors of the straightness and ovality between the machine vision and the manual measurement are less than 10%.

scholarly journals Long-Term High-Accuracy Measurement Method of LC Resonance Circuit

1995 ◽  
Vol 115 (4) ◽  
pp. 612-613
Author(s):  
Mitsugi Saita ◽  
Tatsuo Yoshie ◽  
Shigeharu Takahashi ◽  
Kiyoshi Muramori
Keyword(s):  
Measurement Method ◽  
High Accuracy ◽  
Resonance Circuit ◽  
Accuracy Measurement ◽  
High Accuracy Measurement
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