Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches

Rehabilitative robotics is an area in the medical field, where one can see a variety of different robotic applications, one of which is the use of robotic exoskeleton in rehabilitation of paraplegics. Current developments are only able to support paraplegics at most and require manual operation of c...

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Main Authors: Adi Cohen, Yizhar Or
Format: Article
Language:English
Published: SAGE Publishing 2018-04-01
Series:International Journal of Advanced Robotic Systems
Online Access:https://doi.org/10.1177/1729881418761137
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author Adi Cohen
Yizhar Or
author_facet Adi Cohen
Yizhar Or
author_sort Adi Cohen
collection DOAJ
description Rehabilitative robotics is an area in the medical field, where one can see a variety of different robotic applications, one of which is the use of robotic exoskeleton in rehabilitation of paraplegics. Current developments are only able to support paraplegics at most and require manual operation of crutches by the patient. In order to overcome this limitation, a theoretical model of a robotic device with actuated robotic crutches is proposed, which can be used to support people with high-level disability, such as quadriplegics who cannot use the existing solutions to perform walking gaits. This work presents kinematic trajectory planning of the proposed model and dynamic analysis of main movement stages. Finally, we present an open-loop control scheme that uses time scaling in order to track the desired joint trajectory of the under-actuated motion stage of crutch swinging. A simulated robotic model has also been developed using Simulink [version R2012b to R2014a]/SimMechanics ([version first generation] developed by Mathworks inc.) environment and has been used for verifying dynamic computations and simulating the robotic device movement under the open-loop control commands of joint torques.
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spelling doaj.art-3caf95d51f3340ff947882f4835248d42022-12-22T03:44:56ZengSAGE PublishingInternational Journal of Advanced Robotic Systems1729-88142018-04-011510.1177/1729881418761137Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutchesAdi CohenYizhar OrRehabilitative robotics is an area in the medical field, where one can see a variety of different robotic applications, one of which is the use of robotic exoskeleton in rehabilitation of paraplegics. Current developments are only able to support paraplegics at most and require manual operation of crutches by the patient. In order to overcome this limitation, a theoretical model of a robotic device with actuated robotic crutches is proposed, which can be used to support people with high-level disability, such as quadriplegics who cannot use the existing solutions to perform walking gaits. This work presents kinematic trajectory planning of the proposed model and dynamic analysis of main movement stages. Finally, we present an open-loop control scheme that uses time scaling in order to track the desired joint trajectory of the under-actuated motion stage of crutch swinging. A simulated robotic model has also been developed using Simulink [version R2012b to R2014a]/SimMechanics ([version first generation] developed by Mathworks inc.) environment and has been used for verifying dynamic computations and simulating the robotic device movement under the open-loop control commands of joint torques.https://doi.org/10.1177/1729881418761137
spellingShingle Adi Cohen
Yizhar Or
Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
International Journal of Advanced Robotic Systems
title Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
title_full Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
title_fullStr Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
title_full_unstemmed Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
title_short Modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
title_sort modeling the dynamics and control of rehabilitative exoskeleton with robotic crutches
url https://doi.org/10.1177/1729881418761137
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