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Sijun Ryu

7 accepted papers

2024

Motion Planning for 2-DOF Transformable Wheel Robots Using Reinforcement Learning

RA-L 2024

Transformable robots have been developed to perform various tasks using flexible methods. However, the transformation properties present challenges in controlling and planning motion strategies, as the system model changes when transformations occur. To address this issue, we propose a planning fram

Cited by 2SourceScholar
2022

2-Dimensional Dynamic Analysis of Inverted Pendulum Robot With Transformable Wheel for Overcoming Steps

RA-L 2022

This letter presents the dynamic modeling of inverted pendulum with adaptable overcoming wheel and analysis of dynamics in 2-dimension. Stairways are inevitable in an environment where humans and robots operate and interact. Normally, the conventional wheel was not able to overcome the obstacle whic

Cited by 9SourceScholar
2022

A Compact and Agile Angled-Spoke Wheel-Based Mobile Robot for Uneven and Granular Terrains

RA-L 2022

This study proposes an angled spoke-based wheel(ASW) design to enhance the driving speed of a mobile robot with angled spoke-based wheels called DODO on granular media, asphalt ground, and transitions between them. The design parameters were optimized using the Taguchi method and <inline-formula xml

Cited by 12SourceScholar
2022

Modular Two-Degree-of-Freedom Transformable Wheels Capable of Overcoming Obstacle

RA-L 2022

This study presents modular transformable wheels capable of overcoming obstacles. They can be used for indoor service robots or service platforms such as wheelchairs and baby carriages, which often move up and down on thresholds or on sidewalks. The structure of the wheel and transformation mechanis

Cited by 19SourceScholar
2021

R-Track: Separable Modular Climbing Robot Design for Wall-to-Wall Transition

RA-L 2021

This letter presents the development of a reconfigurable wall-climbing robot (WCR) called R-track. R-Track is designed for operations inside metal structures. It adheres to the metal surface with magnetic tracks. With a modular design which each module of R-Track can be connected or disconnected wit

Cited by 31SourceScholar