Research on High Pressure Resistant Linear Variable Differential Transformer with Magnetic Ring

DOI

10.2991/cmfe-15.2015.186How to use a DOI?

Keywords

LVDT; Magnetic ring; Linearity; Sensitivity; Stroke length ratio

Abstract

Aiming at the problems of traditional linear variable differential transformer (LVDT) with poor linearity and small stroke length ratio, a new kind of structure with magnetic ring was presented. The finite element simulation models of the before and after improved LVDT were established. The structural static analysis of pressure pipe was simulated by ANSYS to study the pressure capacity. For researching the effect of magnetic ring on the characteristics of LVDT, the transient electromagnetic field was simulated by Ansoft. The results show that the maximum deformation of pressure pipe appears at the unfixed end and the value is 2.7?m at 30MPa. After the magnetic ring is added in the bobbin, the LVDT’s magnetic field distribute is greatly improved. Comparing with the unimproved LVDT’s characteristics, the linearity of improved LVDT increases 5.6 times, the stroke length ratio improves 2.5 times and the sensitivity has a slight reduction. So the global Characteristics of LVDT is promoted a lot.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ruifeng Li
AU  - Hong Ji
AU  - Xiaoping Li
AU  - Maliang Su
AU  - Hao Xie
AU  - Shuowen Zhang
PY  - 2015/07
DA  - 2015/07
TI  - Research on High Pressure Resistant Linear Variable Differential Transformer with Magnetic Ring
BT  - Proceedings of the International Conference on Chemical, Material and Food Engineering
PB  - Atlantis Press
SP  - 793
EP  - 797
SN  - 2352-5401
UR  - https://doi.org/10.2991/cmfe-15.2015.186
DO  - 10.2991/cmfe-15.2015.186
ID  - Li2015/07
ER  -