A case study in troubleshooting electromechanical software-controlled systems : the InMotion² Robot
Name
921147770-MIT.pdf
Description
Full printable version
Size
11.18 MB
Format
Adobe PDF
Checksum (MD5)
73c47ffb6807de8b385a599c1a3bb7bc
Author(s)
Coad, Margaret Mary
Advisor(s)
Neville Hogan.
Alternative Title
InMotion² Robot
Date Issued
2015
Publisher
Massachusetts Institute of Technology
Abstract
The InMotion² robot is a clinical version of the MIT-Manus robot, which was developed in the 1990s to help with upper limb rehabilitation of stroke survivors. In 2015, experiments were planned to use the InMotion² robot for studies of human force and motion control. During preparation for the experiments, however, a malfunction was discovered in the robot. A series of systematic tests were carried out to determine what part of the robot was causing the malfunction. It was determined that the magnets on one of the two motors were slipping on the rotor shaft. This slippage caused the malfunctioning motor's torque output to range from 10% to 13% of the other motor's output given the same input signal. The malfunctioning motor was repaired, and the robot was reassembled. Tests were carried out to verify the performance of the robot, and the torque output of the malfunctioning motor was measured to range from 120% to 130% of the other motor's torque output, showing that the malfunction had been fixed.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 64).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
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