Lagging-domain model for compensation of hysteresis of xMR sensors in positioning applications

Domajnko, Dora (author), Križaj, Dejan (author)

The hysteresis of magnetoresistive sensors remains a considerable cause of inaccuracy of positioning applications. The phenomena itself has been well studied and described by different physical and phenomenological models. Various biasing techniques have been proposed. However, the increased fabrication and computational price they require is undesirable. In this paper, a computational algorithm for the compensation of hysteresis of linear and rotary encoders is proposed. A lagging-domain model based on play operators is presented for prediction of hysteresis. The outlined procedure for the calibration of parameters allows the use of the algorithm for various types of encoders without knowing their exact material properties. The method was tested on different anisotropic magnetoresistive and tunneling magnetoresistive sensors. Results show that the impact of hysteresis was reduced by up to 90% without a significant increase of computational time or production costs.

• Language: English
• Keywords: magnetoresistive sensors, Lagging-domain model, hysteresis, compensation, play operator
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2018
• Number of pages: 14 str.
• Numbering: Vol. 18, iss. 7, art. 2281
• PID: 20.500.12556/RUL-131720
• UDC: 628
• ISSN on article: 1424-8220
• DOI: 10.3390/s18072281
• COBISS.SI-ID: 34093785
• Publication date in RUL: 01.10.2021

Record is a part of a journal

• Title: Sensors
• Shortened title: Sensors
• Publisher: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 14.07.2018

Secondary language

• Language: Slovenian
• Keywords: magnetoresistivni senzorji, model Lagging-domain

Projects

• Funder: Drugi - Drug financer ali več financerjev
• Funding programme: RLS d.o.o.