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Kinesthetic Feedback During 2DOF Wrist Movements Via A Novel MR-Compatible Robot.pdf

Erwin2017 - MR SoftWrist_0.pdf
Preview of Kinesthetic Feedback during 2DOF Wrist Movements via a Novel MR-Compatible Robot
🔗 Source: mahilab.rice.edu
📊 Size: 3.78 MB
📄 Pages: 10 pages
⬇️ Downloads: 17

Summary

Key Features:

MR-Compatibility: The robot avoids ferrous components and conductive loops that could interfere with fMRI signals or cause skin burns.
Multi-Degree of Freedom (DOF): Capable of applying forces along both flexion/extension (FE) and radial/ulnar deviation (RUD) axes, mimicking natural wrist movements.
Precision Kinesthetic Feedback: Delivers up to 1.5 N·m of torque with a transparent operation and low backdrivability (10% of maximum torque output).
 High Control Bandwidth: Demonstrates a 5.5 Hz stiffness control bandwidth for a range of virtual stiffness values (25-125% of physical reflected stiffness).

Validation in fMRI:

The study validates the MR-SoftWrist's functionality during fMRI using a single healthy subject. The robot successfully applied kinesthetic feedback without:

Degrading Image Quality: No significant deterioration in fMRI images was observed.
 Inducing Head Movements: Minimal head movements were detected, crucial for maintaining the quality of brain activity data.
Interfering with Task Performance: The subject could reliably perform wrist pointing tasks under robot-applied forces.

Potential Applications:

The MR-SoftWrist opens doors to future fMRI studies investigating:

Sensorimotor Learning: Exploring how subjects learn and adapt to robotic feedback during wrist movements.
* Neurorehabilitation: Assessing the effectiveness of robotic interventions for individuals recovering from stroke or other neurological conditions.

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Description

The MR-SoftWrist, a novel MRI-compatible robot, provides precise kinesthetic feedback for wrist movements, enabling accurate interaction control during fMRI studies with a workspace encompassing 20 degrees of rotation in both flexion/extension and radial/ulnar deviation axes. Its low backdrivability ensures transparent operation at nominal speeds.

Technical Information

  • File Format: PDF
  • File Size: 3.78 MB
  • Pages: 10
  • Language: EN
  • Total Downloads: 17
  • Last Updated: 5 months ago

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If you're interested in Kinesthetic Feedback during 2DOF Wrist Movements via a Novel MR-Compatible Robot, you might also want to explore:

Kinesthetic guideKinesthetic tutorialFeedback guideFeedback tutorialduring guideduring tutorial2DOF guide2DOF tutorialWrist guideWrist tutorialMovements guideMovements tutorialNovel guideNovel tutorialMR-Compatible guideMR-Compatible tutorialRobot guideRobot tutorial

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