Modeling of eddy current sensor using geometric and electromagnetic data |
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Authors: | Tae-Ok Kim Gil-Seung Lee Hwa-Young Kim Jung-Hwan Ahn |
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Affiliation: | (1) Department of Mechanical & Intelligent Systems Engineering, Pusan National University, Korea;(2) Department of Mechanical Engineering, Pusan National University, Korea |
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Abstract: | In this paper a new modeling method for an eddy current sensor is presented using geometric and electromagnetic data of a
sensor and a measuring target It can predict not only sensor output but also medium behavior related to sensor output The
geometric data of a sensor coil and the eddy current generated on a measuring target are simplified to an array of circular
loops. And to perform computations of the network circuit between sensor coil loops and eddy current loops using the geometric
and electromagnetic data in order to consider all possible interactions, the equivalent network circuit of eddy current sensor’s
behavior has been drawn. Because the sensor’s initial value, medium behavior, and final value can be shown quantitatively
by the proposed modeling method as the geometric and electromagnetic data varies, it can precisely predict the sensor output
depending on the measuring goal and application field. Thus the model can be utilized to improve accuracy, eliminate the need
for calibration before use, and produce the best design for any given purpose. |
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Keywords: | Eddy current Geometric Electromagnetic Electromotive force Mutual inductance Conductivity |
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