OUTPUT RATIO BASED ON A MODIFIED GEOMETRY FOR THE CALCULATION MAGNETIC CONDUCTIVITY IN THE ELECTROMAGNETIC DISPLACEMENT SENSORS RASTER

Trofimov Aleksey Anatol'evich, doctor of technical science, professor, sub-department of information and measuring equipment and metrology, Penza State University (40 Krasnaya street, Penza, Russia), iit@pnzgu.ru
Kuchumov Evgeniy Vladimirovich, candidate of technical sciences, senior researcher, Scientific-research Institute of physical measurements (8/10 Volodarskogo street, Penza, Russia), info@niifi.ru

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Background. The subject of this study is electromagnetic raster encoders.The aim is to study the distribution and magnetic conductivity in electromagnetic raster displacement sensor operating over a wide temperature range.
Materials and methods. The expediency calculation magnetic conductivity in the gap raster encoders. Developed and described mathematically physical model electromagnetic displacement sensor. When solving tasks used methods theory of electrical circuits and electromagnetic field.
Results. We derive expressions for the calculation of the magnetic conductivity in the gap displacement sensor with mechanical conjugation the tooth pattern to a uniform magnetic field with the introduction of correction factors that take into account flows from the end faces and the side faces of the rotor projections and the stator, allowing to develop a methodology of calculation of design parameterssensitive elements raster encoders.
Conclusions. The authors proposed a physical model electromagnetic displacement bitmap converter and given expression to calculate the magnetic conductivity allow the development stage to choose the optimal design parameters sensor to maximize the value output signal modulation.

motion sensor, screen, magnetic conductivity, magnetomotive force, vernier pair, stator, rotor.