A Two Degrees-of-Freedom Floor-Based Robot for Transfer and Rehabilitation Applications

Fuente: arXiv
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Bibliographic Details
Main Authors: Lalonde, Ian, Denis, Jeff, Lamy, Mathieu, Martin, Camille, Lebel, Karina, Girard, Alexandre
Format: Preprint
Published: 2025
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author Lalonde, Ian
Denis, Jeff
Lamy, Mathieu
Martin, Camille
Lebel, Karina
Girard, Alexandre
author_facet Lalonde, Ian
Denis, Jeff
Lamy, Mathieu
Martin, Camille
Lebel, Karina
Girard, Alexandre
contents The ability to accomplish a sit-to-stand (STS) motion is key to increase functional mobility and reduce rehospitalization risks. While raising aid (transfer) devices and partial bodyweight support (rehabilitation) devices exist, both are unable to adjust the STS training to different mobility levels. Therefore, We have developed an STS training device that allows various configurations of impedance and vertical/forward forces to adapt to many training needs while maintaining commercial raising aid transfer capabilities. Experiments with healthy adults (both men and women) of various heights and weights show that the device 1) has a low impact on the natural STS kinematics, 2) can provide precise weight unloading at the patient's center of mass and 3) can add a forward virtual spring to assist the transfer of the bodyweight to the feet for seat-off, at the start of the STS motion.
format Preprint
id arxiv_https___arxiv_org_abs_2511_22705
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A Two Degrees-of-Freedom Floor-Based Robot for Transfer and Rehabilitation Applications
Lalonde, Ian
Denis, Jeff
Lamy, Mathieu
Martin, Camille
Lebel, Karina
Girard, Alexandre
Robotics
Systems and Control
The ability to accomplish a sit-to-stand (STS) motion is key to increase functional mobility and reduce rehospitalization risks. While raising aid (transfer) devices and partial bodyweight support (rehabilitation) devices exist, both are unable to adjust the STS training to different mobility levels. Therefore, We have developed an STS training device that allows various configurations of impedance and vertical/forward forces to adapt to many training needs while maintaining commercial raising aid transfer capabilities. Experiments with healthy adults (both men and women) of various heights and weights show that the device 1) has a low impact on the natural STS kinematics, 2) can provide precise weight unloading at the patient's center of mass and 3) can add a forward virtual spring to assist the transfer of the bodyweight to the feet for seat-off, at the start of the STS motion.
title A Two Degrees-of-Freedom Floor-Based Robot for Transfer and Rehabilitation Applications
topic Robotics
Systems and Control
url https://arxiv.org/abs/2511.22705