Theoretical model and optimization of magnetic stress sensor for measuring steel cable stress

Lin Liu; Weimin Chen; Peng Zhang; Shunren Hu

doi:10.1117/12.885893

28 December 2010 Theoretical model and optimization of magnetic stress sensor for measuring steel cable stress

Lin Liu, Weimin Chen, Peng Zhang, Shunren Hu

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75442S (2010) https://doi.org/10.1117/12.885893
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

Magnetic stress sensor has been considered as the most suitable sensor for measurement of steel cable stress because of its simple structure, low cost and long service life. However, the theoretical foundation for sensor design has never been reported, so it is necessary to study the theory and method of sensor design. Following the magneto-mechanical principle, a theoretical model of magnetic stress sensor is developed. The model indicated that the output of sensor is the function of structural parameters, excitation parameters and stress applied, respectively. A sensor is designed for an engineering steel cable and experiments are done to verify the optimization. Experimental results are in good agreement with the theoretical predictions. Compared to the previous results, the sensor sensitivity is improved by about 4 times, which shows that this model is rational and feasible and the theoretical foundation for optimization is truly of great importance for optimizing the characteristic properties of a sensor.

Citation Download Citation

Lin Liu, Weimin Chen, Peng Zhang, and Shunren Hu "Theoretical model and optimization of magnetic stress sensor for measuring steel cable stress", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75442S (28 December 2010); https://doi.org/10.1117/12.885893

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