Applications of a high accuracy optical fiber displacement sensor to vibrometry and profilometry

2004 ◽  
Vol 116 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Y. Alayli ◽  
S. Topçu ◽  
D. Wang ◽  
R. Dib ◽  
L. Chassagne
2021 ◽  
Vol 63 ◽  
pp. 102481
Author(s):  
Abdul Ghaffar ◽  
Mujahid Mehdi ◽  
YanYun Hu ◽  
Arnaldo G. Leal-Junior ◽  
Abdul Basit ◽  
...  

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2842 ◽  
Author(s):  
Wei Liu ◽  
Bing Liang ◽  
Zhenyuan Jia ◽  
Di Feng ◽  
Xintong Jiang ◽  
...  

High precision position control is essential in the process of parts manufacturing and assembling, where eddy current displacement sensors (ECDSs) are widely used owing to the advantages of non-contact sensing, compact volume, and resistance to harsh conditions. To solve the nonlinear characteristics of the sensors, a high-accuracy calibration method based on linearity adjustment is proposed for ECDSs in this paper, which markedly improves the calibration accuracy and then the measurement accuracy. After matching the displacement value and the output voltage of the sensors, firstly, the sensitivity is adjusted according to the specified output range. Then, the weighted support vector adjustment models with the optimal weight of the zero-scale, mid-scale and full-scale are established respectively to cyclically adjust the linearity of the output characteristic curve. Finally, the final linearity adjustment model is obtained, and both the calibration accuracy and precision are verified by the established calibration system. Experimental results show that the linearity of the output characteristic curve of ECDS adjusted by the calibration method reaches over 99.9%, increasing by 1.9–5.0% more than the one of the original. In addition, the measurement accuracy improves from 11–25 μ m to 1–10 μ m in the range of 6mm, which provides a reliable guarantee for high accuracy displacement measurement.


2018 ◽  
Vol 47 (9) ◽  
pp. 922002
Author(s):  
李志辰 Li Zhichen ◽  
刘 琨 Liu Kun ◽  
江俊峰 Jiang Junfeng ◽  
马鹏飞 Ma Pengfei ◽  
李鹏程 Li Pengcheng ◽  
...  

2018 ◽  
Vol 1149 ◽  
pp. 012034
Author(s):  
Xinxing Chen ◽  
Jiannan Xiang ◽  
Chaobo Zhang ◽  
Chih-Chen Chang ◽  
Ming Liu

1992 ◽  
Vol 58 (12) ◽  
pp. 2069-2074
Author(s):  
Donglei TANG ◽  
Enyao ZHANG ◽  
Kazuhiro NOJIMA ◽  
Katsuhiko YASUDA ◽  
Kaiji SATO ◽  
...  

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