Research on load sensing system based on orthogonal fiber grating array

WANG Gao; ZHANG Meiju; HUANG Manguo; LIANG Xiaobo; LIU Zhichao

doi:10.7510/jgjs.issn.1001-3806.2021.02.003

LASER TECHNOLOGY > 2021 > 45(2): 143-146. > DOI: 10.7510/jgjs.issn.1001-3806.2021.02.003

WANG Gao, ZHANG Meiju, HUANG Manguo, LIANG Xiaobo, LIU Zhichao. Research on load sensing system based on orthogonal fiber grating array[J]. LASER TECHNOLOGY, 2021, 45(2): 143-146. DOI: 10.7510/jgjs.issn.1001-3806.2021.02.003

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Research on load sensing system based on orthogonal fiber grating array

1.
National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China
2.
Key Laboratory of Science and Technology on Special Condition Monitoring Sensor Technology, Beijing Changcheng Aeronautic Measurement and Control Technology Research Institute, Aviation Industry Corporation of China, Beijing 100022, China
3.
Institute of Photoelectric Measarerement and Control Technology, School of Optoelectronic Information, Changchun University of Science and Technology, Changchun 130000, China

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Received Date: March 26, 2020
Revised Date: June 18, 2020
Published Date: March 24, 2021

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Abstract

Abstract

In order to avoid the problem that the clamping force is too large to damage the product during assembly or too small to cause slipping, a method of intelligent sensing of fiber sensing was adopted, and a load sensing system based on orthogonal fiber grating array was designed. To analyze the clamping state, the sensing modules were arranged in a way that the fiber gratings were perpendicular to each other to obtain the transverse shear force in two orthogonal directions of the clamping plane. Two 5.0cm×5.0cm rubber blocks were used to make the load sensing module in the experiment. The effect of different parameters on the clamping control was analysed, and the results show that the effective length of the fiber grating is proportional to the sensitivity and inversely proportional to the spatial resolution. The results show that the vertical sensitivity is 31.4pm/N, and the horizontal sensitivity is 29.9pm/N. It can be seen that the system can obtain the force changes of the clamped objects in real time, which is helpful for intelligent adjustment and control.
- fiber optics,
- orthogonal array,
- load sensing,
- structural design

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