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Related Experiment Videos

Measurement of angular displacements using Hall effect transducers

S L Weinhoffer1, S Z Barnes, N Berme

  • 1Department of Mechanical Engineering, Ohio State University, Columbus 43210.

Journal of Biomechanics
|April 1, 1993
PubMed
Summary

Hall effect transducers offer a durable alternative for angular displacement measurement. Optimized configurations achieved precise measurements up to 140 degrees, with enhanced accuracy in the mid-range.

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Area of Science:

  • Engineering
  • Instrumentation
  • Sensors

Background:

  • Precision potentiometers and optical encoders have limitations in wear and measurement range.
  • Angular displacement sensing is critical in various industrial and robotic applications.
  • Hall effect transducers present a potential solution for high-precision angular measurement.

Purpose of the Study:

  • To investigate Hall effect transducers as a viable alternative for measuring angular displacements.
  • To identify key design parameters for optimizing Hall effect transducer performance.
  • To present an optimal Hall effect transducer configuration for angular measurement.

Main Methods:

  • Studied various design parameters of Hall effect transducers.
  • Developed and tested an optimized Hall effect transducer configuration.

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  • Evaluated measurement accuracy and standard deviation over a 140-degree range.

    • Main Results:

    • An optimized Hall effect transducer configuration was developed.
    • Angular rotation up to 140 degrees was measured with a standard deviation of 0.5 degrees.
    • Within the +/- 35 degrees mid-range, the standard deviation improved significantly to 0.1 degrees.

    Conclusions:

    • Hall effect transducers are a promising alternative to traditional angular displacement sensors.
    • The optimized configuration demonstrates high accuracy and reliability for angular measurement.
    • Further development could enhance their applicability in demanding environments.