Linearity Range Enhancement of LVDT Position Sensors Using Optimized Coils

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00383464" target="_blank" >RIV/68407700:21230/25:00383464 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1109/JSEN.2025.3568547" target="_blank" >https://doi.org/10.1109/JSEN.2025.3568547</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JSEN.2025.3568547" target="_blank" >10.1109/JSEN.2025.3568547</a>

Result language

angličtina

Original language name

Linearity Range Enhancement of LVDT Position Sensors Using Optimized Coils

Original language description

This paper presents enhancing the linearity range of linear variable differential (displacement) transformer (LVDT) sensors by optimizing the excitation and pickup coils. The paper aims to increase the linearity without complicating the sensor structure and measurement systems. The linearity range is essential for the efficient operation of LVDT position sensors. Conventional LVDT position sensors usually have one excitation coil and two differentially connected pickup coils for the stationary part. They have one armature with a ferromagnetic core for the moving part. The axial length of the excitation coil and the number of turns in the pickup coils are optimized for the linearity range enhancement. The two-dimensional (2D) axisymmetric finite element method (FEM) is used for analysis and optimization. The optimizations are performed based on a Ferrite core armature with a cylindrical structure and a fixed axial length and radius. A constraint of a maximum total axial length of the coils is also applied for the design optimization. The experiments are conducted to validate the LVDT’s pickup coils optimization to enhance the linearity range using measurement results. The measured nonlinearity error of 1% is achieved using optimized coils for the LVDT position sensors. The maximum repeatability error is below 0.2% for a prototyped position sensor.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/GA24-12705S" target="_blank" >GA24-12705S: Novel Magnetic Position Sensors</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IEEE Sensors Journal

ISSN

1530-437X

e-ISSN

1558-1748

Volume of the periodical

25

Issue of the periodical within the volume

13

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

24441-24450

UT code for WoS article

001522931900032

EID of the result in the Scopus database

2-s2.0-105005422119