TY - JOUR
T1 - Design and Transparency Assessment of a Gait Rehabilitation Robot with Biomimetic Knee Joints
AU - Jamwal, Prashant
AU - Dauletbayev, Shyngys
AU - Sagidoldin, Daulet
AU - Keikibayev, Darkhan
AU - Niyetkaliyev, Aibek S.
AU - HUSSAIN, Shahid
AU - Agrawal, Sunil
N1 - Funding Information:
This publication was carried out within the framework of the Subproject \u2116 6514 \u201CGait Rehabilitation Using Exoskeleton Assisted Technology\u201D financed under the Project \u201CStimulating Productive Innovation\u201D, supported by the World Bank and the Government of the Republic of Kazakhstan. This research is also supported by Nazarbayev University under the Faculty-development competitive research grants program for 2024\u2013 2026 Grant \u2116 201223FD8813, Jamwal, P. K.
Funding Information:
\u201CThis work was supported by a World Bank Grant No. 41/6514/2021\u201D P. K. Jamwal, A. Niyetkaliyev are with the School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan (e-mail: [email protected]),
Publisher Copyright:
© 2018 IEEE.
PY - 2024/11
Y1 - 2024/11
N2 - Robotic exoskeletons are being increasingly used in clinics for the treatment of medicable disabilities. These exoskeletons, which closely couple with patients’ limbs, need to move in harmony with the endoskeleton motions. To achieve coordination, exoskeletons should be transparent; in other words, they should not interfere with natural human motion or their underlying coordination strategies. Transparency can be achieved through a bio-inspired exoskeleton design and also by implementing appropriate force control methods to maneuver exoskeleton motions. A new hybrid active-passive Gait Exoskeleton-Assisted Rehabilitation (GEAR) robot is presented here for the rehabilitation of lower limb disabilities. The GEAR robot is designed to enhance transparency incorporating a flexible hip joint and a biomimetic knee joint. The proposed GEAR robot also integrates a Remote Centered Motion (RCM) based passive mechanism to support torso and pelvic motions in two planes and features actuated exoskeleton legs in the sagittal plane for treadmill-assisted walking. The exoskeleton legs are actuated at their hip and knee joints using backdrivable actuators. To provide a natural walking experience, the hip joints of the exoskeleton legs offer two passive degrees of freedom in the frontal and transverse planes in addition to the actuated sagittal plane motion. The biomimetic design of the exoskeleton knee joint ensures alignment with the human anatomical knee joint by closely tracking the latter’s instantaneous center of rotation (ICR). To evaluate GEAR robot’s transparency, a comparative study was conducted, involving three healthy subjects. The participants walked freely on a treadmill and then with the GEAR robot operated first in a completely backdrivable (i.e., passive) mode and subsequently in an active mode. The sEMG data collected during these experiments were analyzed to assess robot’s transparency.
AB - Robotic exoskeletons are being increasingly used in clinics for the treatment of medicable disabilities. These exoskeletons, which closely couple with patients’ limbs, need to move in harmony with the endoskeleton motions. To achieve coordination, exoskeletons should be transparent; in other words, they should not interfere with natural human motion or their underlying coordination strategies. Transparency can be achieved through a bio-inspired exoskeleton design and also by implementing appropriate force control methods to maneuver exoskeleton motions. A new hybrid active-passive Gait Exoskeleton-Assisted Rehabilitation (GEAR) robot is presented here for the rehabilitation of lower limb disabilities. The GEAR robot is designed to enhance transparency incorporating a flexible hip joint and a biomimetic knee joint. The proposed GEAR robot also integrates a Remote Centered Motion (RCM) based passive mechanism to support torso and pelvic motions in two planes and features actuated exoskeleton legs in the sagittal plane for treadmill-assisted walking. The exoskeleton legs are actuated at their hip and knee joints using backdrivable actuators. To provide a natural walking experience, the hip joints of the exoskeleton legs offer two passive degrees of freedom in the frontal and transverse planes in addition to the actuated sagittal plane motion. The biomimetic design of the exoskeleton knee joint ensures alignment with the human anatomical knee joint by closely tracking the latter’s instantaneous center of rotation (ICR). To evaluate GEAR robot’s transparency, a comparative study was conducted, involving three healthy subjects. The participants walked freely on a treadmill and then with the GEAR robot operated first in a completely backdrivable (i.e., passive) mode and subsequently in an active mode. The sEMG data collected during these experiments were analyzed to assess robot’s transparency.
KW - rehabilitation
KW - stroke
KW - gait
KW - Robot Design
KW - Natural walking
KW - Gait rehabilitation
KW - Gait Exoskeleton Assisted Rehabilitation (GEAR)
KW - Robot Transparency
KW - self-alignment
UR - http://www.scopus.com/inward/record.url?scp=85210364700&partnerID=8YFLogxK
U2 - 10.1109/TMRB.2024.3504002
DO - 10.1109/TMRB.2024.3504002
M3 - Article
SN - 2576-3202
SP - 1
EP - 13
JO - IEEE Transactions on Medical Robotics and Bionics
JF - IEEE Transactions on Medical Robotics and Bionics
M1 - 3504002
ER -