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A Robotic Test Rig for Performance Assessment of Prosthetic Joints.

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Summary

A new testing rig evaluates prosthetic and robotic joints using cyclic dynamic loading, ensuring reliable performance for lower limb amputations. This mechatronic device validates prosthetic joint quality through simulated muscle action and gait analysis.

Keywords:
knee jointprosthesisprostheticsrobotic devicerobotic jointtest rig designvelocity control

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Area of Science:

  • Biomechanics and robotics
  • Musculoskeletal system and joint function
  • Prosthetic and assistive device development

Background:

  • Increasing lower limb amputations due to trauma and diabetes necessitate advanced prosthetic solutions.
  • Current prostheses aim to restore function and mobility, requiring rigorous testing for efficacy.
  • Robotics, mechatronics, and assisted living technologies are crucial for developing better prosthetic joints.

Purpose of the Study:

  • To develop and validate a testing rig for evaluating the performance of prosthetic and robotic joints.
  • To assess the suitability of the rig for simulating complex joint movements and dynamic loading.
  • To ensure the reliability and effectiveness of prosthetic solutions for amputees.

Main Methods:

  • Development of a mechatronic testing rig utilizing a motorized lead-screw to simulate muscle actuation (hamstring-quadricep pair).
  • Cyclic dynamic loading applied to prosthetic joints, with loads and position monitored by load cells and proximity sensors.
  • Utilizing gait analysis, computer-aided design (CAD), and geometry models to validate the rig's performance against established biomechanical data.

Main Results:

  • The testing rig successfully simulates the complex movements and dynamic loading experienced by prosthetic and robotic joints.
  • Validation using the knee joint demonstrates the rig's capability to accurately assess joint performance and ensure prosthesis quality.
  • The system effectively monitors joint dynamics, ensuring conformity with geometric models and gait analysis parameters.

Conclusions:

  • The developed testing rig provides a robust platform for the stringent evaluation of prosthetic and robotic joints.
  • The modular design and data-driven approach streamline the rehabilitation process for individuals with lower limb loss.
  • This mechatronic solution enhances the quality and reliability of artificial joints, improving patient outcomes.