Internal analysis of a transverse flux sensor

Rotary variable differential transformer (RVDT) sensors are used for industrial applications and are appreciated for their frictionless operation, reliability, linearity and sensitivity. The sensor shown here derives from a classic RVDT and is based on a differential rotating transformer. The functi...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2005-04, Vol.290, p.1367-1370
Main Authors: Voyant, J.-Yves, Yonnet, J.-Paul, Jay, Guillaume, Foucher, Christian
Format: Article
Language:English
Subjects:
Electric power
Engineering Sciences
Numerical simulation
Saturation magnetization
Sensors
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Summary:Rotary variable differential transformer (RVDT) sensors are used for industrial applications and are appreciated for their frictionless operation, reliability, linearity and sensitivity. The sensor shown here derives from a classic RVDT and is based on a differential rotating transformer. The functioning principle is explained and experimental measurements are shown. The originality of the studied sensor lies in the transverse flux design which gives a linearity error less than 0.1% of the stroke. However, this transverse flux circulation has uncommon features for an electrotechnical system due to flux paths which are not enclosed in radial planes. Finite element and experimental analysis are used for the magnetic study. This study aims to enhance sensor performances and manufacturing easiness.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2004.11.439