Inverse Modeling of Human Knee Joint Based on Geometry and Vision Systems for Exoskeleton Applications

Current trends in Robotics aim to close the gap that separates technology and humans, bringing novel robotic devices in order to improve human performance. Although robotic exoskeletons represent a breakthrough in mobility enhancement, there are design challenges related to the forces exerted to the...

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Published inMathematical problems in engineering Vol. 2015; no. 2015; pp. 1 - 14
Main Authors Piña-Martínez, Eduardo, Rodríguez-Leal, Ernesto
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Publishing Corporation 01.01.2015
John Wiley & Sons, Inc
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Abstract Current trends in Robotics aim to close the gap that separates technology and humans, bringing novel robotic devices in order to improve human performance. Although robotic exoskeletons represent a breakthrough in mobility enhancement, there are design challenges related to the forces exerted to the users’ joints that result in severe injuries. This occurs due to the fact that most of the current developments consider the joints as noninvariant rotational axes. This paper proposes the use of commercial vision systems in order to perform biomimetic joint design for robotic exoskeletons. This work proposes a kinematic model based on irregular shaped cams as the joint mechanism that emulates the bone-to-bone joints in the human body. The paper follows a geometric approach for determining the location of the instantaneous center of rotation in order to design the cam contours. Furthermore, the use of a commercial vision system is proposed as the main measurement tool due to its noninvasive feature and for allowing subjects under measurement to move freely. The application of this method resulted in relevant information about the displacements of the instantaneous center of rotation at the human knee joint.
AbstractList Current trends in Robotics aim to close the gap that separates technology and humans, bringing novel robotic devices in order to improve human performance. Although robotic exoskeletons represent a breakthrough in mobility enhancement, there are design challenges related to the forces exerted to the users’ joints that result in severe injuries. This occurs due to the fact that most of the current developments consider the joints as noninvariant rotational axes. This paper proposes the use of commercial vision systems in order to perform biomimetic joint design for robotic exoskeletons. This work proposes a kinematic model based on irregular shaped cams as the joint mechanism that emulates the bone-to-bone joints in the human body. The paper follows a geometric approach for determining the location of the instantaneous center of rotation in order to design the cam contours. Furthermore, the use of a commercial vision system is proposed as the main measurement tool due to its noninvasive feature and for allowing subjects under measurement to move freely. The application of this method resulted in relevant information about the displacements of the instantaneous center of rotation at the human knee joint.
Author Rodríguez-Leal, Ernesto
Piña-Martínez, Eduardo
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Cites_doi 10.1109/TNSRE.2008.2008285
10.1109/TMECH.2007.901934
10.1109/tnsre.2011.2176960
10.1109/TNSRE.2011.2163083
10.1109/tnsre.2014.2364618
10.1243/09544119jeim561
ContentType Journal Article
Copyright Copyright © 2015 Eduardo Piña-Martínez and Ernesto Rodriguez-Leal.
Copyright © 2015 Eduardo Piña-Martinez and Ernesto Rodriguez-Leal. Eduardo Piña-Martinez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright_xml – notice: Copyright © 2015 Eduardo Piña-Martínez and Ernesto Rodriguez-Leal.
– notice: Copyright © 2015 Eduardo Piña-Martinez and Ernesto Rodriguez-Leal. Eduardo Piña-Martinez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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SubjectTerms Ankle
Axes of rotation
Design
Design engineering
Exoskeletons
Gait
Human
Human performance
Joints (anatomy)
Kinematics
Knee
Knees
Mathematical models
Robotics
Rotating bodies
Vision systems
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Title Inverse Modeling of Human Knee Joint Based on Geometry and Vision Systems for Exoskeleton Applications
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