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Keya Ghonasgi

6 accepted papers

2023

A Novel Control Law for Multi-Joint Human-Robot Interaction Tasks While Maintaining Postural Coordination

IROS 2023poster

Exoskeleton robots are capable of safe torque-controlled interactions with a wearer while moving their limbs through predefined trajectories. However, affecting and assisting the wearer's movements while incorporating their inputs (effort and movements) effectively during an interaction re-mains an…

Cited by 1SourceScholar
2022

Quantifying Changes in Kinematic Behavior of a Human-Exoskeleton Interactive System

IROS 2022poster

While human-robot interaction studies are becoming more common, quantification of the effects of repeated interaction with an exoskeleton remains unexplored. We draw upon existing literature in human skill assessment and present extrinsic and intrinsic performance metrics that quantify how the human…

Cited by 3SourceScholar
2021

Capturing Skill State in Curriculum Learning for Human Skill Acquisition

IROS 2021poster

Humans learn complex motor skills with practice and training. Though the learning process is not fully understood, several theories from motor learning, neuroscience, education, and game design suggest that curriculum-based training may be the key to efficient skill acquisition. However, designing s…

Cited by 6SourceScholar
2021

Design and Validation of a Novel Exoskeleton Hand Interface: The Eminence Grip

ICRA 2021poster

How best to attach exoskeletons to human limbs is an open and understudied problem. In the case of upperbody exoskeletons, cylindrical handles are commonly used attachments due to ease of use and cost effectiveness. However, handles require active grip strength from the user and may result in undesi…

Cited by 6SourceScholar
2020

A Novel Inverse Kinematics Method for Upper-Limb Exoskeleton under Joint Coordination Constraints

IROS 2020poster

In this study, we address the inverse kinematics problem for an upper-limb exoskeleton by presenting a novel method that guarantees the satisfaction of joint-space constraints, and solves closed-chain mechanisms in a serial robot configuration. Starting from the conventional differential kinematics…

Cited by 18SourceScholar
2019

Walking With a Weighted Pelvic Belt or With an Equivalent Pure Downward Force on the Pelvis: Are These Different?

RA-L 2019

In a previous study, a tethered pelvic-assist device (TPAD) was used to successfully retrain crouch gait in children with cerebral palsy by applying a downward force on the pelvis while walking on a treadmill. While the results of this study were promising, an important issue was to translate this t

Cited by 0SourceScholar