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Proceedings 2017, 1(4), 390;

Linear Position Sensing through Conductive Wall without Permanent Magnet

Faculty of Electrical Engineering, Czech Technical University, Technicka 2, 16627 Prague, Czech Republic
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Author to whom correspondence should be addressed.
Published: 8 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
PDF [1019 KB, uploaded 4 September 2017]


A linear position sensor for pneumatic actuators is presented. Position of the piston rod made of ferromagnetic material is detected by low frequency magnetic field which penetrates the aluminum wall of the cylinder. The sensor consists of an array of integrated fluxgate sensors and two excitation saddle coils mounted outside the actuator. The method does not need a permanent magnet attached to the piston as required by common magnetic position sensors.
Keywords: position sensor; fluxgate; pneumatic actuator position sensor; fluxgate; pneumatic actuator
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Vyhnanek, J.; Ripka, P.; Chirtsov, A. Linear Position Sensing through Conductive Wall without Permanent Magnet. Proceedings 2017, 1, 390.

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