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Effects of Surface Crack on Eddy Current Sensor Signal in Maglev System

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Abstract:

In experiments of mechanical movement in outer space, maglev technology is used for simulating the weightless environment. Maglev rotor moves along a linear guide way. In the process of motion, eddy current sensors are needed for detecting the displacement between sensor and metal guide way. Because of the length requirement of guide way, splicing technique is used. This technique leads to the crack on detective surface and also the distortion of sensor signal. By the means of mathematical model analysis and finite element method, the rules of sensor signal are found out and verified by experiment. The results show that optimal crack width can weaken the distortion of sensor signal.

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Info:

Periodical:

Applied Mechanics and Materials (Volumes 278-280)

Pages:

743-748

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.278-280.743

Citation:

Cite this paper

Online since:

January 2013

Authors:

He Zhang Weng, Hong Wei Li, Shu Qin Liu, Zhao Liang Cheng, Jie Liu

Keywords:

Crack, Displacement Detection, Eddy Current Sensor, MagLev

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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