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Jungsu Choi

4 accepted papers

2025

Personalized Robotic Achilles Tendon Utilizing a Semi-Passive Spring with Switching Stiffness*

IROS 2025

Wearable robotic devices have been demonstrated to reduce muscle activation and metabolic cost during walking, but conventional motorized systems often impose significant weight and bulk, leading to user discomfort and limited portability. To address these limitations, the Robotic Achilles Tendon (R

Cited by 0SourceScholar
2022

Continuous Calibration and Narrow Compensation Algorithm to Estimate a Joint Axis under the Various Conditions with Unit Sensor

IROS 2022poster

Wearable robots have been developed to aid or substitute the gait locomotion of humans. To assist gait locomotion based on the intention of a wearer, a gait pattern analysis is required with a wearable sensor by measuring body information, i.e., a joint angular velocity. However, measuring a precise…

Cited by 0SourceScholar
2021

Hybrid Model Control of WalkON Suit for Precise and Robust Gait Assistance of Paraplegics

ICRA 2021poster

Powered exoskeletons for people with paraplegia have been widely developed. To generate the basic but essential motions for daily human life, precise control algorithms to follow the joint reference trajectories are necessary. The dynamic characteristics of the exoskeletal joints, however, varies si…

Cited by 5SourceScholar
2020

Adaptive Gait Pattern Generation of a Powered Exoskeleton by Iterative Learning of Human Behavior

IROS 2020poster

Several powered exoskeletons have been developed and commercialized to assist people with complete spinal cord injury. For motion control of a powered exoskeleton, a normal gait pattern is often applied as a reference. However, the physical ability of paraplegics and the degrees of freedom of powere…

Cited by 8SourceScholar