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Strain distribution on a finger link: a static simulation study.

Jiawen Liu1, Paul Chappell1, Neil White1

  • 1a Department of Electronics and Computer Science , University of Southampton , Southampton , UK.

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|August 21, 2018
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Summary
This summary is machine-generated.

Researchers explored new locations for strain sensors on prosthetic hands to improve grip control. These new sensor placements can also indicate finger angle during grasping, enhancing prosthetic functionality for amputees.

Keywords:
Prosthetic handSouthampton Handpiezoresistive sensorsimulationstrain sensor

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Area of Science:

  • Biomedical Engineering
  • Robotics
  • Human-Machine Interface Design

Background:

  • Advanced prosthetic hands aim to restore daily task capabilities for amputees.
  • Effective prosthetic control relies on sensor data from the hand and human-machine interface.
  • Current strain/stress sensors are primarily fingertip-mounted, limiting grip control options.

Purpose of the Study:

  • To investigate novel positions for strain sensors on the side of prosthetic finger links.
  • To enable future force control for lateral and key grips.
  • To assess sensor utility for measuring finger joint angles.

Main Methods:

  • Modified links of the Southampton Hand were used for analysis.
  • Strain sensors were strategically placed on the lateral aspects of finger links.
  • Sensor performance was evaluated for force sensing and angle indication.

Main Results:

  • Promising locations for strain sensors on prosthetic finger links were identified.
  • Specific sensor placements demonstrated potential for indicating finger angle during curling motions.
  • The findings suggest feasibility for enhanced grip force control.

Conclusions:

  • New sensor positions on prosthetic finger links offer improved control capabilities.
  • Strain sensors can serve dual roles in force measurement and joint angle indication.
  • This research advances the development of more functional prosthetic hands.