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Demagnetization Effect in a Meander-Core Orthogonal Fluxgate Sensor.

Shaotao Zhi1, Xuecheng Sun2, Qiaozhen Zhang1

  • 1College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China.

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Summary
This summary is machine-generated.

This study models demagnetization in meander-core orthogonal fluxgate sensors. Increased demagnetization factor enhances linear range but can reduce sensitivity, guiding sensor design.

Keywords:
demagnetization effectfinite element modelingmeander-coreorthogonal fluxgate

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Area of Science:

  • Physics
  • Materials Science
  • Electrical Engineering

Background:

  • Demagnetization is critical for orthogonal fluxgate sensor magnetic core design.
  • Amorphous ribbon meander-core structures are investigated for sensor applications.

Purpose of the Study:

  • To establish a demagnetization model for meander-core structures.
  • To analyze the impact of demagnetization on sensor sensitivity and linear range.
  • To optimize meander-core parameters for improved fluxgate sensor performance.

Main Methods:

  • Finite element modeling to evaluate the average demagnetization factor.
  • Simulation and experimental analysis of meander-core orthogonal fluxgate sensors.
  • Systematic variation of meander-core parameters: number of strips, line width, and spacing.

Main Results:

  • Demagnetization factor increases with the number of strips and line width, enhancing linear range.
  • Sensitivity improves with appropriate increase in strips but decreases with increased line width.
  • Smaller spacing increases demagnetization factor and reduces sensitivity due to magnetic interactions.

Conclusions:

  • The demagnetization model accurately predicts sensor performance.
  • Meander-core geometry significantly influences fluxgate sensor sensitivity and linear range.
  • Findings provide valuable insights for designing advanced magnetic sensors.