Magnetic Modeling of a Rotating Flux Concentrator System Designed to Mitigate Noise in Large Magnetic Sensors

Abstract

This report discusses the magnetic modeling results of a proof of concept system for 1/f noise mitigation in "large" sensors. The 1/f noise reduction is achieved by rotating flux concentrators that shift the operating frequency of the sensor to higher frequencies where 1/f noise is lower. The goal is to design systems with magnetic flux concentrators that maximize the enhancement of the field and the percentage modulation of the field but minimize size. These issues in execution and necessary tradeoffs in performance are discussed, and magnetic modeling is presented, showing a clear road map to increased performance from the viewpoint of field enhancement and modulation.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2010
Accession Number
ADA529158

Entities

People

  • Alan S. Edelstein
  • Gregory A. Fischer

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Air Gaps
  • Detection
  • Detectors
  • Frequency
  • Fungi
  • Magnetic Detectors
  • Magnetic Fields
  • Magnetic Flux
  • Magnetic Materials
  • Magnetometers
  • Materials
  • Microelectromechanical Systems
  • Modulation
  • Noise
  • Noise Reduction
  • Piezoelectric Materials
  • Three Dimensional

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Plasma Physics / Magnetohydrodynamics
  • Solar Photovoltaics and Thermoelectric Devices.