Improved interfacing circuit for planar coil-based thin angle sensors

A. S. Anil Kumar*, Boby George, Subhas C. Mukhopadhyay

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

This paper presents improved interfacing schemes for a recently reported variable reluctance-based thin planar angle sensor. The design and analysis of two inductance-based measurement schemes appropriate for the planar angle sensor are presented. The first one is based on differential measurement, and the second method realizes a ratiometric measurement. The suggested interfacing circuits measure the differential or ratiometric inductances of the differential sensing coils directly from the sensor rather than measuring the individual inductances of the sensing coils separately. As a result, the sensor performs better, and measurement speed is improved ten times. Studies were conducted with a variable reluctance-based angle sensor, and the designs are validated. The functionality of the proposed circuit was verified for different rotating speeds. The worst-case linearity error for the differential measurement circuit was found to be 2.3.%, for a rotating speed close to 500 rpm.

Original languageEnglish
Title of host publicationSensing technology
Subtitle of host publicationproceedings of ICST'15
EditorsNagender Kumar Suryadevara, Boby George, Krishanthi P. Jayasundera, Subhas Chandra Mukhopadhyay
Place of PublicationCham
PublisherSpringer, Springer Nature
Pages440-449
Number of pages10
ISBN (Electronic)9783031298714
ISBN (Print)9783031298707, 9783031298738
DOIs
Publication statusPublished - 2023
Event15th International Conference on Sensing Technology, ICST 2022 - Sydney, Australia
Duration: 5 Dec 20227 Dec 2022

Publication series

NameLecture Notes in Electrical Engineering
PublisherSpringer
Volume1035
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference15th International Conference on Sensing Technology, ICST 2022
Country/TerritoryAustralia
CitySydney
Period5/12/227/12/22

Keywords

  • Inductance Measurement
  • Differential Measurement
  • Ratiometric Measurement
  • Angle Sensing
  • Variable Reluctance

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