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2022-12-14T04:07:06Z
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Method for Identifying Type of Eddy-Current Displacement Sensor
Mizuno, Tsutomu
Goto, Sho
Deguchi, Kenta
Kitamura, Yoshinori
Yuichi, Asato
Enoki, Shigemi
Shinagawa, Hiroki
Displacement
eddy-current displacement sensor
frequency
identification method
maximum quality factor
Eddy-current (EC) displacement sensors are used in a device for measuring the shaft vibration of turbines. An EC displacement sensor is composed of a sensor probe and an impedance/output voltage (Z/V) converter. In a power plant in the U. S., the type of the sensor probe and the displacement from the turbine shaft to the tip of the sensor probe (displacement x) are not controlled. For this reason, when only the Z/V converter breaks down, the plant is stopped and dismantled, and both the Z/V converter and the sensor probe are replaced. This results in two problems, i.e., the unstable supply of electric power when the power plant is stopped and the high cost of dismantling the plant. If both the type of the sensor probe and x are identified during turbine operation, the aforementioned problems could be solved. In this paper, we describe that the three types of the sensor probe and x can be identified by comparing the measured the maximum quality factor Q(EC) (max) and frequency f(o) at Q(EC) (max) with the Q(EC) (max) versus f(o) characteristics of sensor probes.
Article
IEEE TRANSACTIONS ON MAGNETICS. 47(10):3554-3557 (2011)
journal article
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
2011-10
application/pdf
IEEE TRANSACTIONS ON MAGNETICS
10
47
3554
3557
0018-9464
AA00667933
https://soar-ir.repo.nii.ac.jp/record/12385/files/Method_Identifying_Eddy-Current_Displacement_Senso.pdf
eng
10.1109/TMAG.2011.2158298
https://doi.org/10.1109/TMAG.2011.2158298
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