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Inductive Position and Speed Sensors.

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Summary
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This study overviews magnetic and inductive sensors for position and speed measurement. New eddy current sensor results are presented for industrial applications requiring ruggedness and long-range detection.

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Area of Science:

  • Sensor Technology
  • Electromagnetism
  • Industrial Instrumentation

Background:

  • Magnetic and inductive sensors offer rugged solutions for position and speed detection.
  • DC magnetic sensors have limited range, while inductive sensors can operate up to 20 meters.
  • Eddy current sensors with magnetoresistive elements enable low-frequency detection through conductive materials.

Purpose of the Study:

  • To provide an overview of existing magnetic and inductive sensing systems.
  • To present novel findings in eddy current velocity and position measurements.
  • To introduce new inductive position sensors designed for demanding industrial environments.

Main Methods:

  • Review of current magnetic and inductive sensor technologies.
  • Development and testing of new eddy current inductive sensors.
  • Design and laboratory evaluation of inductive position sensors for industrial use.

Main Results:

  • Demonstration of eddy current sensors for velocity and position measurement.
  • Development of inductive position sensors suitable for industrial applications.
  • These industrial sensors prioritize long working distances and environmental resistance over ultra-high precision.

Conclusions:

  • Eddy current inductive sensors offer versatile solutions for position and velocity sensing.
  • The developed industrial inductive sensors meet requirements for robustness and extended operational range.
  • These sensors are suitable for challenging applications in hydraulics, mining, and material handling.