Strain Responses of Superconducting Magnets Based on Embedded Polymer-FBG and Cryogenic Resistance Strain Gauge Measurements

2019 ◽  
Vol 29 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Qiang Hu ◽  
Xingzhe Wang ◽  
Mingzhi Guan ◽  
Beimin Wu
Keyword(s):  
Strain Gauge ◽  
Superconducting Magnets ◽  
Resistance Strain ◽  
Resistance Strain Gauge ◽  
Strain Gauge Measurements ◽  
Strain Responses

Research on Temperature Compensation of the Fiber Bragg Grating Sensor and the Resistance Strain Gauge

2021 ◽  
Vol 16 (6) ◽  
pp. 1020-1027
Author(s):  
Feng Zhu ◽  
Min Liu ◽  
Chengjun Xu ◽  
Sheng Zou ◽  
Chentong Chen ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Temperature Compensation ◽  
Metal Structure ◽  
Resistance Strain ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Resistance Strain Gauge ◽  
Strain Monitoring ◽  
Bragg Grating Sensor

The fiber Bragg grating sensor is widely used in strain monitoring of large metal structure and trend to replace the resistance strain gauge due to its advantages of strong stability, high measurement accuracy, multiple points measuring, strong environmental suitability and long transmission distance. The temperature-induced strain, which can have the same order of magnitudes as the mechanically-induced strain, will cause great errors in the strain monitoring. Therefore, the temperature compensation for the sensors is essential to guarantee the measurement accuracy. The existing theoretical models and experiment platforms for analyzing the temperature compensation are established by assuming that the testing temperature is constant. However, the surrounding temperature of some large metal structure is not stable, and the effect of temperature change cannot be neglected. This paper aims to establish an analytic model and an experiment platform to compare the temperature compensation of the fiber bragg grating sensor and the resistance strain gauge. The superiority of the temperature compensation for the fiber bragg grating sensor is verified. The result provides theoretical support for choosing the fiber bragg grating sensor in the long-time strain monitoring.

Study on Eliminating the Effect of Bending Moment in Torque Measurement

2012 ◽  
Vol 217-219 ◽  
pp. 2293-2298
Author(s):  
Qing Hai Jiang ◽  
Yu Sun ◽  
Xiao Yong Xu
Keyword(s):  
Adverse Effect ◽  
Strain Gauge ◽  
Bending Moment ◽  
Resistance Strain ◽  
Torque Measurement ◽  
Motor Shaft ◽  
Principle Of Superposition ◽  
Resistance Strain Gauge ◽  
Transmission Shaft

The function characteristics of bending moment and torque were analyzed based on the principle of torque measurement and the adverse effect of bending moment to torque measurement was proved theoretically. By distributing the positions of resistance strain gauge on the transmission shaft and the relative positions in the bridge, an effective method of eliminating the adverse effect of bending moment was proposed base on the principle of superposition and counterbalance in the bridge, and the potential errors were analyzed and corrected. Then the proposed method was applied in measuring the torque of a motor shaft. The result shows that the effect of bending moment has been eliminated, and this method is feasible and effective.

Application of Sensor on Modern Sizing Machine in Term of Intelligent Control

2013 ◽  
Vol 712-715 ◽  
pp. 1900-1903
Author(s):  
Yun Tong
Keyword(s):  
Intelligent Control ◽  
Strain Gauge ◽  
Frequency Converter ◽  
Resistance Strain ◽  
Resistance Strain Gauge ◽  
Photoelectric Encoder ◽  
Strain Gauge Sensor ◽  
Intelligence Control ◽  
Winding Tension

Concerning intelligence control of sizing machine in textile process, resistance strain gauge sensor is used to detect the winding tension of weavers beam, capacitance level transducer can be used to monitor the level of size glue in sizing box so as to maintain the constant sizing regain , photoelectric encoder is a key device for regulate the elongation for various zone with the help of frequency converter governed by PLC , photoelectric encoder is indispensable for regulation of elongation.4444

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