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This study introduces a novel, sensitive force sensor utilizing the Villari effect in electrical steel. The developed magnetoelastic sensor offers robust performance and cost-effectiveness for precise force measurements.

Keywords:
Villari effectforce sensormagnetoelastic effect

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Area of Science:

  • Magnetism and Magnetic Materials
  • Mechanical Engineering
  • Sensor Technology

Background:

  • Magnetoelastic sensors, leveraging effects like Villari, are crucial for force measurement.
  • Existing sensors often face limitations in sensitivity, cost, or hysteresis.
  • Optimizing sensor design is key to improving performance and applicability.

Purpose of the Study:

  • To design and investigate an innovative force sensor based on the Villari effect.
  • To evaluate transducer performance, mitigate measurement hysteresis, and optimize functional parameters.
  • To explore signal selection, waveform, and frequency impacts on sensor accuracy.

Main Methods:

  • Fabrication of a force sensor using electrical steel in a pressductor pattern operating in bending load mode.
  • Experimental research to evaluate performance, hysteresis, and optimize parameters.
  • Analysis of supply/measured signals, harmonic content, and current waveforms/frequencies.

Main Results:

  • The developed sensor demonstrates high sensitivity and stress sensitivity due to its bending deformation mode.
  • Achieved a near-linear characteristic within the 0.5-5 N measuring range.
  • Reported a signal-to-noise ratio (SNR) of 46 dB and an uncertainty of 0.11 N.

Conclusions:

  • The proposed Villari effect-based force sensor is robust, cost-effective, and highly sensitive compared to other magnetoelastic sensors.
  • Optimization of parameters and signal conditions effectively mitigated measurement hysteresis.
  • The sensor's performance characteristics make it suitable for precise force measurement applications.