Yun Seok Choi

About

Yun Seok Choi is a robotics researcher whose work centers on in-pipe inspection robotics, autonomous navigation, and robot manipulator control. He is best known for his development of the MRINSPECT series — Multifunctional Robotic Crawlers for In-pipe Inspection — which represent significant advances in pipeline maintenance technology for gas infrastructure. His most influential contribution, a 2016 paper introducing the MRINSPECT VII and its novel multiaxial differential gear mechanism, has garnered 87 citations, establishing him as a leading voice in pipeline robotics. This mechanism elegantly enables robots to navigate complex pipe geometries, including elbows, using a single motor without additional control overhead — a breakthrough in mechanical simplicity and reliability. Choi's research portfolio further demonstrates a systematic progression from foundational gear mechanisms to sophisticated autonomous navigation, incorporating monocular cameras and PSD sensors to allow untethered robots to recognize and traverse varied pipeline environments. His later work extends into robot manipulator control, including hybrid impedance-admittance control for unknown environments and torque minimization strategies for heavy-duty redundant arms used in nuclear decommissioning — showcasing impressive breadth. With over 240 cumulative citations, Choi's contributions have meaningfully shaped how engineers approach confined-space robotic inspection and dexterous manipulation in hazardous environments.

Research Focus

Key Achievements

Top Papers

1. 1
   Novel Mechanism for In-Pipe Robot Based on a Multiaxial Differential Gear Mechanism

   87 citations · 2016
2. 2
   An In-pipe robot with multi-axial differential gear mechanism

   35 citations · 2013
3. 3
   Novel robot mechanism capable of 3D differential driving inside pipelines

   29 citations · 2014
4. 4
   Hybrid impedance and admittance control of robot manipulator with unknown environment

   25 citations · 2022
5. 5
   Recognition of pipeline geometry by using monocular camera and PSD sensors

   19 citations · 2017
6. 6
   Recognition of inside pipeline geometry by using PSD sensors for autonomous navigation

   14 citations · 2014
7. 7
   Design of back-drivable joint mechanism for in-pipe robot

   12 citations · 2015
8. 8
   2-2D differential gear mechanism for robot moving inside pipelines

   10 citations · 2015
9. 9
   A new torque minimization method for heavy-duty redundant manipulators used in nuclear decommissioning tasks

   8 citations · 2021
10. 10
    Recognition of inside pipeline geometry by using monocular camera and PSD sensors

    5 citations · 2014

Key Collaborators

Contact & Links