<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></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.

Analytical Modeling for the Grating Eddy Current Displacement Sensors

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Analytical Modeling for the Grating Eddy Current Displacement Sensors"}

As a new type of displacement sensor, grating eddy current displacement sensor (GECDS) combines traditional eddy current sensors and grating structure in one....

Analytical Modeling for the Grating Eddy Current Displacement Sensors

Published Online: Mar 11, 2015

Page range: 44 - 51

Received: Jun 15, 2014

Accepted: Jan 30, 2015

DOI: https://doi.org/10.1515/msr-2015-0007

Keywords
Grating eddy current sensor, analytical modeling, displacement measurement

© Chunfeng Lv, Wei Tao, Huaming Lei, Yingying Jiang, Hui Zhao

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Analytical Modeling for the Grating Eddy Current Displacement Sensors

Published Online: Mar 11, 2015

Page range: 44 - 51

Received: Jun 15, 2014

Accepted: Jan 30, 2015

DOI: https://doi.org/10.1515/msr-2015-0007

KeywordsGrating eddy current sensor, analytical modeling, displacement measurement

© Chunfeng Lv, Wei Tao, Huaming Lei, Yingying Jiang, Hui Zhao

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Grating eddy current sensor, analytical modeling, displacement measurement