By Topic

Fundamental Characteristics of Differential Transformer Type Displacement Sensor Using a YBCO Superconductor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Ohyama, T. ; Kobe University. ; Ishidoh, M. ; Itoh, M.

A displacement sensor was constructed using a YBCO superconductor. The sensor consisted of an excitation coil, a differential coil, and a superconducting YBCO rod. The inductance of the differential coil decreased as a result of perfect diamagnetism (the Meissner effect) when the YBCO rod entered the coil. The YBCO rod could be shifted by as much as ±12 mm in the center of the differential coil, along the axis of the rod, by moving the holder attached to the rod. The relationship between the output voltage of the differential coil and the displacement of the rod was measured using a lock-in amplifier. Experimental results indicate that the displacement sensor characteristics, including sensitivity, linearity, stability, frequency dependence, and absence of hysteresis, are satisfactory. Together with the above results, the electrical properties of the superconducting materials were also examined and compared with those of ferrite and soft iron.

Published in:

Magnetics in Japan, IEEE Translation Journal on  (Volume:7 ,  Issue: 7 )