Analytical Modeling for the Grating Eddy Current Displacement Sensors

Chunfeng Lv; Wei Tao; Huaming Lei; Yingying Jiang; Hui Zhao

doi:10.1515/msr-2015-0007

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Analytical Modeling for the Grating Eddy Current Displacement Sensors

Measurement Science Review

Volume 15 (2015): Issue 1 (February 2015)

By: Chunfeng Lv, Wei Tao, Huaming Lei, Yingying Jiang and Hui Zhao

Open Access

|Mar 2015

Abstract

As a new type of displacement sensor, grating eddy current displacement sensor (GECDS) combines traditional eddy current sensors and grating structure in one. The GECDS performs a wide range displacement measurement without precision reduction. This paper proposes an analytical modeling approach for the GECDS. The solution model is established in the Cartesian coordinate system, and the solving domain is limited to finite extents by using the truncated region eigenfunction expansion method. Based on the second order vector potential, expressions for the electromagnetic field as well as coil impedance related to the displacement can be expressed in closed-form. Theoretical results are then confirmed by experiments, which prove the suitability and effectiveness of the analytical modeling approach.

References

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Articles in this issue

DOI: https://doi.org/10.1515/msr-2015-0007 | Journal eISSN: 1335-8871

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Language: English

Page range: 44 - 51

Submitted on: Jun 15, 2014

Accepted on: Jan 30, 2015

Published on: Mar 11, 2015

Published by: Slovak Academy of Sciences, Institute of Measurement Science

In partnership with: Paradigm Publishing Services

Publication frequency: Volume open

Keywords:

Grating eddy current sensor,

analytical modeling,

displacement measurement

Related subjects:

Engineering,

Electrical engineering,

Control engineering, metrology and testing

© 2015 Chunfeng Lv, Wei Tao, Huaming Lei, Yingying Jiang, Hui Zhao, published by Slovak Academy of Sciences, Institute of Measurement Science
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 15 (2015): Issue 1 (February 2015)