1. Books & Chapters

  1. Youngjin Choi, “PID Control Design for Robotic Manipulator”, Hanyang University Press, 120P, ISBN 978-89-7218-643-4 (95560), Dec. 16, 2019 [Link]
  2. Youngjin Choi, Yonghwan Oh, and Giho Jang, “Balancing via Position Control”, Humanoid Robotics: a Reference, Chapter 66, Springer, ISBN 978-94-007-7194-9, Aug 7, 2017. [Link]
  3. Youngjin Choi and Wan Kyun Chung “PID Trajectory Tracking Control for Mechanical Systems”, 111P, Springer, ISBN: 3-540-20567-5, 2004. [Link]

2. Papers

(2.1) International Journal Papers

  1. Yuna Choi, Jaehyun Kim, Gwangyeol Cha, Youngjin Choi, Il Youn Jung, Bong Gun Lee, and Chang-Hun Lee, “Parameter estimation-based discrimination method for osteoporosis stage with ultrasound bone densitometer,” Scientific Reports, vol. 14, Article No. 23022, Oct., 2024. [Link]
  2. Jonghyeok Kim, Donghyeon Lee, Youngjin Choi, and Wan Kyun Chung, “Lie Group-Based User Motion Refinement Control for Teleoperation of a Constrained Robot Arm”, IEEE Robotics and Automation Letters, vol. 9, No. 7, pp. 6154-6161, July, 2024. [Link]
  3. Babar Jamil, Hugo Rodrigue, and Youngjin Choi “Design of a Novel Sensing Method For a Pneumatic Artificial Muscle Actuator-driven 2-DOF Parallel Joint ”, Soft Robotics, vol. 10, No. 1, pp. 187-196, Feb., 2023. (소프트모핑 50%) [Link]
  4. Babar Jamil, Gyeongjae Yoo, Youngjin Choi and Hugo Rodrigue, “Hybrid Robotic Manipulator using Sensorized Articulated Segment Joints with Soft Inflatable Rubber Bellows”, IEEE Transactions on Industrial Electronics, vol. 69, No. 10, pp. 10259-10269, Oct., 2022 [SCI] [Link] (소프트모핑 50%)
  5. Dukchan Yoon, Minsang Seo, and Youngjin Choi, “Kinematic Modeling of Human Forearm Rotation with Distal Radio-Ulnar Circumduction”, IEEE Transactions on Medical Robotics and Bionics, vol. 4, No. 2, pp. 480-489, May, 2022 [Link] (공압텐던 50%, 소프트모핑 50%)
  6. Qiang Lu, Qing-Long Han, Dongliang Peng, and Youngjin Choi, “Decision and Event-Based Fixed-Time Consensus Control for Electromagnetic Source Localization”, IEEE Transactions on Cybernetics, vol. 52, No.4, pp. 2186 - 2199, Apr., 2022 [SCI] [Link] (생체모사 100%)
  7. Lengxue Li, Sunhong Kim, Junho Park, Youngjin Choi, Qiang Lu, and Dongliang Peng, “Robotic Tensegrity Structure with a Mechanism Mimicking Human Shoulder Motion”, ASME Journal of Mechanisms and Robotics, vol. 14, No. 2, Article No. 025001, 8pages, Apr., 2022 [SCI-E] [Link] (공압텐던 50%, 소프트모핑 50%)
  8. Jong Woo Kang, Hyun-Joo Lee, Jong-Gyeong Lee, Dong-Hoon Oh, Junghoon Kim, Ji-Woon Lee, In-Ho Jeon, and Youngjin Choi “The active von Frey filament test: A new technique to evaluate hand tactile sensation in continuous variable units”, Hand Surgery and Rehabilitation, vol. 41, No. 1, pp. 85-89, Feb., 2022. [SCI-E] [Link]
  9. Babar Jamil, and Youngjin Choi, “Modified Stiffness based Soft Optical Waveguide Integrated Pneumatic Artificial Muscle (PAM) Actuators for Contraction and Force Sensing”, IEEE/ASME Transactions on Mechatronics, vol. 26, No.6, pp. 3243-3253, Dec., 2021 [SCI] [Link] (공압텐던 50%, 소프트모핑 50%)
  10. Yuna Choi, Seulah Lee, Minchang Sung, Junho Park, Sungmin Kim, and Youngjin Choi, “Development of EMG-FMG based Prosthesis with PVDF-Film Vibrational Feedback Control”, IEEE Sensors Journal, vol. 21, No. 20, pp. 23597-23607, Oct., 2021 [SCI-E] [Link] (공압텐던 50%, 소프트모핑 50%)
  11. Babar Jamil, Gyeongjae Yoo, Youngjin Choi and Hugo Rodrigue, “Proprioceptive Soft Pneumatic Gripper for Extreme Environments using Hybrid Optical Fibers”, IEEE Robotics and Automation Letters, vol. 6, No. 4, pp. 8694-8701, Oct., 2021 [SCI-E] [Link] (소프트모핑 50%)
  12. Dukchan Yoon, and Youngjin Choi, “Analysis of Fingertip Force Vector for Pinch-Lifting Gripper with Robust Adaptation to Environments”, IEEE Transactions on Robotics, vol. 37, No. 4, pp. 1127-1143, Aug., 2021 [SCI] [Link] (생체모사 50%, 공압텐던 50%)
  13. Naan Ju, Kyu Hye Lee, Myoung-Ok Kim, and Youngjin Choi, “A User-Driven Approach to Prosthetic Upper Limb Development in Korea”, Healthcare, vol.9, No. 7, Article No. 839, 13pages, July 2021 [SCI-E] [Link] (공압텐던 50%, 소프트모핑 50%)
  14. Dukchan Yoon, Long Kang, Sajjad Manzoor, and Youngjin Choi, “The Improved DLR Wrist: Design and Analysis of 2-Degrees-of-Freedom Rotational Mechanism Using Spatial Antiparallelogram Linkages”, ASME Journal of Mechanical Design, vol. 143, No. 5, Article No. 053303, 12pages, May, 2021 [SCI-E] [Link] (생체모사 100%)
  15. Geon Lee, Geun Young Hong, and Youngjin Choi, “Tendon-driven Compliant Prosthetic Wrist Consisting of Three Rows Based on the Concept of Tensegrity Structure”, IEEE Robotics and Automation Letters, vol. 6, No. 2, pp. 3956-3963, Apr., 2021 [SCI-E] [Link] (공압텐던 50%, 소프트모핑 50%)
  16. Seulah Lee, Yuna Choi, Minchang Sung, Jihyun Bae, and Youngjin Choi, “A knitted sensing glove for human hand postures pattern recognition”, Sensors, vol. 21, No. 4, Article No. 1364, 15pages, Feb., 2021 [SCI-E] [Link] (공압텐던 50%, 소프트모핑 50%).
  17. Yewon Song, Seulah Lee, Yuna Choi, Sora Han, Hyuna Won, Tae-Hyun Sung, Youngjin Choi, and Jihyun Bae, “Design framework for a seamless smart glove using a digital knitting system”, Fashion and Textiles, vol. 8, Article No. 6, 13pages, Feb., 2021 [SCI-E] [Link]
  18. Jeong Hoon Shin, and Youngjin Choi, “Robust Control for the Detection Threshold of CFAR Process in Cluttered Environments”, Sensors, vol. 20, No. 14, Article No. 3904, 18pages, July, 2020 [SCI-E] [Link]
  19. Wooseok Ryu, Youngjin Choi, Yong Je Choi, Yeong Geol Lee, and Sungon Lee, “Development of an Anthropomorphic Prosthetic Hand with Underactuated Mechanism”, Applied Sciences, vol. 10, No. 12, Article No. 4384, 12pages, June, 2020 [SCI-E] [Link] (생체모사 100%)
  20. Junho Park, Chang-Hun Lee, Youngjin Choi, Il-Han Joo, Kwang-Hyun Lee, and Sung Jae Kim, “Extension mechanism of the proximal interphalangeal joint of human phalanx: a cadaveric biomechanical study” BioMed Research International, vol. 2020, Article ID 7585976, 5pages, June, 2020 [SCI-E] [Link] (생체모사 100%)
  21. Wooseok Ryu, Youngjin Choi, Yong Je Choi, and Sungon Lee, “Development of a lightweight prosthetic hand for patients with amputated fingers”, Applied Sciences, vol. 10, No. 10, Article No. 3536, 14pages, May, 2020 [SCI-E] [Link] (생체모사 100%)
  22. Seulah Lee, Minchang Sung, and Youngjin Choi, “Wearable fabric sensor for controlling myoelectric hand prosthesis via classification of foot postures”, Smart Materials and Structures, vol. 29, No.3, Article No. 035004, 12pages, Mar., 2020 [SCI] [Link] (생체모사 100%)
  23. Seulah Lee, Babar Jamil, Sunhong Kim, and Youngjin Choi, “Fabric vest socket with embroidered electrodes for control of myoelectric prosthesis”, Sensors, vol. 20, No.4, Article No. 1196, 17pages, Feb., 2020 [SCI-E] [Link] (생체모사 100%)
  24. Sajjad Manzoor and Youngjin Choi, “Central Pattern Generator Based Motion Control of Hopping Robot for Ground Level Acclimatization”, International Journal of Robotics and Automation, vol. 35, No.1, pp. 43-52, Feb., 2020 [SCI-E] [Link] (생체모사 50%)
  25. Junho Park, and Youngjin Choi, “Input-to-State Stability of Variable Impedance Control for Robotic Manipulator”, Applied Sciences, vol. 10, No. 4, Article No. 1271, Feb., 2020 [SCI-E] [Link] (생체모사 50%)
  26. Geon Lee, Sung-Jae Kim, Joo Hyung Ha, Chang-Hun Lee, Youngjin Choi, and Kwang-Hyun Lee, “Residual rotation of forearm amputation: cadaveric study”, BMC Musculoskeletal Disorders, vol. 21, Article No. 40, Jan., 2020 [SCI-E] [Link] (생체모사 100%)
  27. Geon Lee and Youngjin Choi, “Bio-inspired Tendon-driven Finger Design with Isomorphic Ligamentous Joint”, IEEE Access Journal, vol. 8, pp. 18240-18251, Jan., 2020 [SCI-E] [Link] (생체모사 50%, 공압텐던 50%)
  28. Donghoon Oh, Seulah Lee, and Youngjin Choi, “Simultaneous Stiffness Measurement Device for a Human Forearm”, IEEE Access Journal, vol. 8, pp. 15313-15321, Jan., 2020 [SCI-E] [Link] (생체모사 100%)
  29. Younggil Cho, Sajjad Manzoor, and Youngjin Choi, “Adaptation to Environmental Change using Reinforcement Learning for Robotic Salamander”, Intelligent Service Robotics, vol. 12, No. 3, pp. 209-218, Jul., 2019 [SCI-E] [Link] (Best Journal Paper)
  30. Babar Jamil, Seulah Lee, and Youngjin Choi, “Fabrication, Characterization and Control of Knit-covered Pneumatic Artificial Muscle”, IEEE Access Journal, vol. 7, pp. 84770-84783, Jun., 2019 [SCI-E] [Link]
  31. Sajjad Manzoor, Young Gil Cho and Youngjin Choi, “Neural Oscillator based CPG for Various Rhythmic Motions of Modular Snake Robot with Active Joints”, Journal of Intelligent and Robotic Systems, vol. 94, No. 3-4, pp. 641-654, Jun., 2019 [SCI-E] [Link]
  32. Seulah Lee, Myoung-Ok Kim, Taeho Kang, Junho Park, and Youngjin Choi, “Knit Band Sensor for Myoelectric Control of Surface EMG-based Prosthetic Hand”, IEEE Sensors Journal, vol. 18, No. 20, pp. 8578-8586, Oct., 2018 [SCI-E] [Link]
  33. Dukchan Yoon and Youngjin Choi, “Underactuated Finger Mechanism using Contractible Slider-Cranks and Stackable Four-Bar Linkages”, IEEE/ASME Transactions on Mechatronics, vol. 22, No. 5, pp. 2046-2057, Oct. 2017. [SCI] [Link]
  34. Sajjad Manzoor, Sungon Lee, and Youngjin Choi, “A Coordinated Navigation Strategy for Multi-Robots to Capture a Target Moving with Unknown Speed”, Journal of Intelligent and Robotic Systems, vol. 87, No. 3, pp 627–641, Sep. 2017. [SCI-E] [Link]
  35. Junghoon Kim, Bum-Jae You and Youngjin Choi, “D'Arsonval Movement based Precise Milligram Force Control for Individual Touch Sense Assessment”, IEEE Transactions on Industrial Electronics, vol. 64, No. 2, pp. 1534-1543, Feb. 2017. [SCI] [Link]
  36. Giho Jang, Junghoon Kim, Sungon Lee, and Youngjin Choi, “EMG-Based Continuous Control Scheme with Simple Classifier for Electric-Powered Wheelchair”, IEEE Transactions on Industrial Electronics, vol. 63, No. 6, pp. 3695-3705, Jun. 2016. [SCI] [Link]
  37. Seungbin Baek, Junho Park, Youngjun Joo, Jongguk Yim, and Youngjin Choi, “Dynamic Modeling and Control of Hopping Robot in Planar Space”, Intelligent Service Robotics, vol. 9, No. 2, Apr., pp. 153-161, 2016 [SCI-E] [Link]
  38. Jongguk Yim and Youngjin Choi, “Systematic Design of Robust Controller for Electro-hydraulic System with Model Uncertainties”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 230, No. 4, Mar., pp. 573-582, 2016. [SCI] [Link]
  39. Sajjad Manzoor and Youngjin Choi, “A Unified Neural Oscillator Model for Various Rhythmic Locomotions of Snake-like Robot”, Neurocomputing, vol. 173, Part 3, pp. 1112-1123, Jan. 2016. [SCI-E] [Link]
  40. An Yong Lee and Youngjin Choi, “Smooth Trajectory Planning Methods using Physical Limits”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 229, no. 12, pp. 2144-2157, Aug. 2015. [SCI] [Link]
  41. Min Jun Kim, Youngjin Choi and Wan Kyun Chung, “Bringing Nonlinear H∞ Optimality to Robot Controllers”, IEEE Transactions on Robotics, vol. 31, No. 3, pp. 682-698, Jun. 2015. [SCI] [Link]
  42. Ji-Hun Bae, Jae-Han Park, Yonghwan Oh, Doik Kim, Youngjin Choi, and Woosung Yang, “Task Space Control considering Passive Muscle Stiffness for Redundant Robotic Arms”, Intelligent Service Robotics, vol. 8, No. 2, pp. 93-104, Apr. 2015. [SCI-E] [Link]
  43. Giho Jang, Junghoon Kim, Youngjin Choi, and Jongguk Yim, “Human Shoulder Motion Extraction using EMG Signal”, International Journal of Precision Engineering and Manufacturing, vol. 15, No. 10, pp. 2185-2192, Oct., 2014. [SCI-E][Link]
  44. An Yong Lee, Jongguk Yim and Youngjin Choi, “Scaled Jacobian Transpose based Control for Robotic Manipulators”, International Journal of Control, Automation and Systems, vol. 12, No. 5, pp. 1102-1109, Oct. 2014. [SCI-E] [Link]
  45. Junghoon Kim, Jongguk Yim, and Youngjin Choi, “Constrained Doubly Coprime Factorization for All Stabilizing H∞ Controllers”, International Journal of Control, Automation, and Systems, vol. 12, No. 3, pp. 518-529, Jun. 2014. [SCI-E] [Link]
  46. Giho Jang, Chulwoo Lee, Hoyul Lee, and Youngjin Choi, “Robotic Index Finger Prosthesis using Stackable Double 4-BAR Mechanisms”, Mechatronics, vol 23, No. 3, pp. 318-325, Apr. 2013. [SCI] [Link]
  47. Geon Lee, Jinhyun Kim, and Youngjin Choi, “Convolution-Based Trajectory Generation Methods using Physical System Limits”, Trans. of the ASME, Journal of Dynamic Systems, Measurement, and Control, vol. 135, No. 1, Article No. 011001, 8 pages, Jan. 2013. [SCI] [Link]
  48. Hoyul Lee and Youngjin Choi, “A New Actuator System using Dual-Motors and a Planetary Gear”, IEEE/ASME Transactions on Mechatronics, vol 17, No. 1, pp. 192-197, Feb 2012. [SCI] [Link]
  49. Hoyul Lee, Youngjin Choi, and Byung-Ju Yi, “Stackable 4-BAR Manipulators for Single Port Access Surgery”, IEEE/ASME Transactions on Mechatronics, vol 17, No. 1, pp. 157-166, Feb 2012. [SCI] [Link]
  50. Hyeon-Jae Yu, An Yong Lee and, Youngjin Choi, “Human Elbow Joint Angle Estimation using Electromyogram Signal Processing”, IET Signal Processing, vol 5, No. 8, pp. 767-775, Dec. 2011. [SCI] [Link]
  51. Hoyul Lee, Eui-jung Jung, Byung-Ju Yi, and Youngjin Choi, “Navigation Strategy of Multiple Mobile Robot Systems based on Null-Space Projection Method”, International Journal of Control, Automation and Systems, vol 9, No. 2, pp. 384-390, Apr. 2011. [SCI-E] [Link]
  52. Youngjin Choi, Joono Cheong, and Hyungpil Moon, “A Trajectory Planning Method for Output Tracking of Linear Flexible Systems Using Exact Equilibrium Manifolds”, IEEE/ASME Transactions on Mechatronics, vol 15, No. 5, pp. 819-826, Oct 2010. [SCI] [Link]
  53. Youngjin Choi, Jonghoon Park and Songjun Lee “Closed-Form Solution of Particular Case of Algebraic Riccati Equation using Moser-Veselov Equation”, IET Control Theory and Applications, vol 4, No. 5, pp. 865-870, May 2010. [SCI] [Link]
  54. Youngjin Choi and Hyungpil Moon, “Performance and Robustness of Lowpass Filter Feedback for Already-Established Control System”, Electronics Letters, vol 46, No. 6, pp. 408-409, Mar. 2010. [SCI] [Link]
  55. Youngjin Choi and Joono Cheong, “New Expressions of 2 x 2 Block Matrix Inversion and Their Application”, IEEE Transactions on Automatic Control, vol 54, No. 11, pp. 2648-2653, Nov. 2009. [SCI] [Link]
  56. Je-Keun Oh, Giho Jang, Semin Oh, Jeong Ho Lee, Byung-Ju Yi, Young Shik Moon, Jong Seh Lee, and Youngjin Choi, “Bridge Inspection Robot System with Machine Vision”, Automation in Construction, vol 18, No. 7, pp. 929-941, Nov. 2009. [SCI-E] [Link]
  57. Hong Rok Kim, Youngjin Choi, Il Hong Suh, and Wan Kyun Chung, “Frequency-Shaped High Gain Compensator for Optical Disk Drive Control System”, IET Control Theory & Applications, vol 2, No. 10, pp. 851-859, Oct. 2008. [SCI] [Link]
  58. Hoyul Lee, Byung-Ju Yi and Youngjin Choi, “Joint-Limit Avoidance and Kinetic-Energy Minimization in Manipulators Having Surplus Joints”, Journal of The Korean Physical Society, vol 53, No. 4, pp. 1910-1918, Oct. 2008. [SCI] [Link]
  59. Youngjin Choi “Singularity-Robust Inverse Kinematics using Lagrange Multiplier for Redundant Manipulators”, Trans. of the ASME, Journal of Dynamic Systems, Measurement and Control, vol 130, No. 5, Article No. 051009, 7 pages, Sep., 2008. [SCI] [Link]
  60. Youngjin Choi, Doik Kim, Yonghwan Oh, and Bum-Jae You, “Posture/Walking Control of Humanoid Robot based on the Kinematic Resolution of COM Jacobian with Embedded Motion”, IEEE Transactions on Robotics, vol 23, No. 6, pp. 1285-1293, Dec, 2007. [SCI] [Link]
  61. Youngjin Choi, “PID State Estimator for Lagrangian Systems”, IET Control Theory & Applications, vol. 1, No. 4, Jul., pp 937-945, 2007. [SCI] [Link]
  62. Youngjin Choi and Wan Kyun Chung, “Performance Limitation and Autotuning of Inverse Optimal PID Controller for Lagrangian Systems”, Trans. of the ASME, Journal of Dynamic Systems, Measurement and Control, vol. 127, No. 2, Jun., pp.240-249, 2005. [SCI] [Link]
  63. Kwangjin Yang, Youngjin Choi and Wan Kyun Chung, “On the Tracking Performance Improvement of Optical Disk Drive Servo Systems using Error-based Disturbance Observer”, IEEE Transactions on Industrial Electronics, vol. 52, No. 1, pp. 270-279, 2005. [SCI] [Link]
  64. Youngjin Choi, Yonghwan Oh, Sang Rok Oh, Jonghoon Park and Wan Kyun Chung, “Multiple Tasks Manipulation for a Robotic Manipulator”, Advanced Robotics, vol. 18, No, 6, pp. 637-653. 2004. [SCI-E] [Link]
  65. Youngjin Choi and Wan Kyun Chung, “PID Performance Tuning Methods for a Robotic Manipulator Based on ISS”, Asian Journal of Control, vol. 5, No. 2, Jun., pp.206-216, 2003. [SCI-E][Link]
  66. Youngjin Choi, Kwangjin Yang, Wan Kyun Chung, Hong Rok Kim and Il Hong Suh, “On the Robustness and Performance of Disturbance Observer for Second-Order Systems”, IEEE Transactions on Automatic Control, vol 48, No.2, Feb., pp. 315-320, 2003. [SCI] [Link]
  67. Youngjin Choi, Wan Kyun Chung and Il Hong Suh, “Performance and H∞ Optimality of PID Trajectory Tracking Controller for Lagrangian Systems”, IEEE Transactions on Robotics and Automation, vol. 17, No. 6, Dec. pp. 857-869, 2001. [SCI] [Link]
  68. Youngjin Choi and Wan Kyun Chung, “On the Stable H∞ Controller Parameterization under Sufficient Condition”, IEEE Transactions on Automatic Control, vol 46, No. 10, Oct. pp. 1618-1623, 2001. [SCI][Link]

(2.2) International Conference Papers

  1. Geunyoung Hong, Youngjin Choi, and Daehee Won, “Stacked Four-bar Gripper Mechanism for Grasping Launcher Adapter Ring,” IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS] (Late Break Results Poster), FrPI7T5.9, Oct., 2024. (민군 100%)
  2. Sunhong Kim, Youngjin Choi, and Daehee Won, “NMPC-Based Smooth Path Planning with Snap Minimization for Wheeled Mobile Robot(WMR),” IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS] (Late Break Results Poster), FrPI7T3.13, Oct., 2024. (민군 100%)
  3. Yuna Choi, Daehun Lee, and Youngjin Choi, “2-DOF Tensegrity Sensor Mechanism with Dual Functionality as Universal Joint and Angle Sensor,” IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS] (Late Break Results Poster), FrPI7T6.14, Oct., 2024. (착용형 100%)
  4. Youngjin Choi and Junsik Kim, “Articulated Body Inertia (ABI) Forward Dynamics Algorithm for Floating Base Systems”, 2024 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (Late Breaking Results Poster), TuBPo.11, July, 2024 (민군 100%)
  5. Junsik Kim, Gwangyeol Cha, Minchang Sung, Youngjin Choi, Alejandro Astudillo, and Jan Swevers, “Optimization-based Application Point Determination of External Wrench for Gravity Compensation of Space Manipulator”, International Conference on Space Robotics, pp. 15-21, June, 2024. (민군 50%, 벨기에 50%) [Link]
  6. Junsik Kim, Yuna Choi, Youngjin Choi, Donghoon Son, Alejandro Astudillo, Jan Swevers, Jonghoon Park, and Daehee Won, “Axis Kinematics Algorithm for Satellite Manipulator System in Orbital Motion”, International Conference on Space Robotics, pp. 372-378, June, 2024. (민군 50%, 벨기에 50%) [Link]
  7. Wanju Kim, Geun Young Hong, Emmanuel Vander Poorten, and Youngjin Choi, “Implementation of Robotic Shoulder Complex actuated by Pneumatic Artificial Muscles,” 19th International Conference on Ubiquitous Robots (UR), pp. 70-76, July, 2022 (벨기에과제 50%, 공압텐던 50%) [Link]
  8. Daehun Lee, Yuna Choi, Junsik Kim, Minchang Sung and Youngjin Choi, “Design of self-alignment joint mechanism using tensegrity,” 19th International Conference on Ubiquitous Robots (UR), Late Breaking Result Session, pp. 593, July, 2022. (착용형로봇 50%, 소프트모핑 50%)
  9. Ruinan Zhao, Yibo Wang, Youngjin Choi and Jin Woo Shin, “RGB-D Camera Data Enhancement using Image Resolution Techniques,” 19th International Conference on Ubiquitous Robots (UR), Late Breaking Result Session, pp. 604, July, 2022 (소프트모핑 50%, 착용형로봇 50%)
  10. Lengxue Li, Ruinan Zhao, Giyeong Sung and Youngjin Choi, “3 DoFs Tensegrity Structure for Human Shoulder Motion Mimicking”, 16th International Conference on Ubiquitous Robots (UR2019), Late Breaking Result, pp. 806-807, June, 2019
  11. Minchang Sung, Sunhong Kim, Seulah Lee, and Youngjin Choi, “sEMG Data Expansion for Accurate Posture Classification”, 16th International Conference on Ubiquitous Robots (UR2019), Late Breaking Result, pp. 804-805, June, 2019
  12. Jaehyun Kim, Wanju Kim, Babar Jamil, Junho Park, Seulah Lee, and Youngjin Choi, “Approximate Linear Modeling of Pneumatic Artificial Muscle”, 16th International Conference on Ubiquitous Robots (UR2019), Work-in-Progress Paper, pp. 373-374, June 2019
  13. Daehun Lee, Junho Park, and Youngjin Choi, “Humanoid Curved Foot with Longitudinal Arch”, 16th International Conference on Ubiquitous Robots (UR2019), Work-in-Progress Paper, pp. 369-370, June 2019
  14. Yuna Choi, Sedong Yang, Seulah Lee, and Youngjin Choi, “Foot Postures Classification using sEMG Signals”, 16th International Conference on Ubiquitous Robots (UR2019), Work-in-Progress Paper, pp. 541-543, June, 2019
  15. Seulah Lee, Geun Young Hong and Youngjin Choi, “Sensing Wear for Multi-channel sEMG Acquisition”, 16th International Conference on Ubiquitous Robots (UR2019), Work-in-Progress Paper, pp. 563-565, June 2019
  16. Geun Young Hong and Youngjin Choi, “Tensegrity Wrist Mechanism using Three Layers of Rigid Bodies and Strings”, 16th International Conference on Ubiquitous Robots (UR2019), pp. 728-733, June 2019 [Link]
  17. Wooseok Ryu, Daeho Kim, Youngjin Choi, and Sungon Lee, “Development of Prosthetic Finger including an Actuator”, 16th International Conference on Ubiquitous Robots (UR2019), pp. 313-318, June 2019 [Link]
  18. Junho Park, Geun Young Hong, Youngjin Choi, Dongliang Peng, and Qiang Lu, “Passivity based Control of Antagonistic Tendon-Driven Mechanism”, IEEE International Conference on Robotics and Automation [ICRA], pp. 3095-3100, May, 2019 [Link]
  19. Hyeryon Son, Geon Lee, Changhun Lee and Youngjin Choi, “Underactuated Tendon-driven Finger Design with Bio-inspired Ligamentous Joint Mechanism”, IEEE International Conference on Cyborg and Bionic Systems [CBS], pp. 171-176, Oct., 2018 (Best Paper [First Prize]) [Link]
  20. Babar Jamil, Seulah Lee and Youngjin Choi, “Conductive Knit-covered Pneumatic Artificial Muscle (k-PAM) Actuator”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 1476-1481 , Oct., 2018 [Link]
  21. Babar Jamil, Jaehyun Kim and Youngjin Choi, “Force Sensing Fingertip with Soft Optical Waveguides for Robotic Hands and Grippers”, IEEE International Conference on Soft Robotics [RoboSoft], pp. 146-151, Apr., 2018 [Link]
  22. Sajjad Manzoor and Youngjin Choi, “Recurring Side-winding Motion Generation for Modular Snake Robot”, IEEE International Conference on Robotics and Biomimetics [ROBIO], pp. 1468-1473, Dec., 2017 [Link]
  23. Minsang Seo, Hogyun Kim and Youngjin Choi, “Human Mimetic Forearm Mechanism towards Bionic Arm”, 15th IEEE International Conference on Rehabilitation Robotics [ICORR], pp. 1171-1176, Jul., 2017. [Link]
  24. Yujin Kim, Junghoon Kim, Hyeryon Son, and Youngjin Choi, “Dynamic Elasticity Measurement for Prosthetic Socket Design”, 15th IEEE International Conference on Rehabilitation Robotics [ICORR], pp. 1281-1286, Jul., 2017. [Link]
  25. Seul Ah Lee, Myoung Ok Kim, Taeho Gang and Youngjin Choi, “Development of Knit Band Electrodes for Multi-channel sEMG Measurement”, 14th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 827-829, Jun., 2017 [Link]
  26. Taeho Gang, Younggil Cho and Youngjin Choi, “Classification of Rock-Paper-Scissors using Electromyography and Multi-Layer Perceptron”, 14th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 406-407, Jun., 2017 [Link]
  27. Minsang Seo, Jaehyun Kim and Youngjin Choi, “Bone Length Extraction from MRI Data for Prosthetic Forearm Design”, 14th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 677-678, Jun., 2017 [Link]
  28. Babar Jamil and Youngjin Choi, “Soft Pneumatic Glove for Grasping Power Improvement”, 14th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 690-691, Jun., 2017. [Link]
  29. Sajjad Manzoor and Youngjin Choi, “Multi-Agent Coordination Using Limit Cycles in Dynamic Environment”, 2016 IEEE International Conference on Control Automation & Information Sciences [ICCAIS], pp. 156-161, Oct., 2016. [Link]
  30. Junghoon Kim, Bum-Jae You and Youngjin Choi, “Novel Apparatus for Light Touch Threshold Measurement”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 4939-4944, Oct., 2016. [Link]
  31. Minsang Seo, Sungon Lee and Youngjin Choi, “Development of a Prosthetic Forearm aiming at Humanlike Motion for Trans-radial Amputation”, 13th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 570-571, Aug., 2016. [Link]
  32. Sajjad Manzoor and Youngjin Choi, “Modular Design of Snake Robot for Various Motion Implementation”, 13th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 211-213, Aug., 2016. [Link]
  33. Dukchan Yoon, Geon Lee, Sungon Lee, and Youngjin Choi, “Underactuated Finger Mechanism for Natural Motion and Self-adaptive Grasping towards Bionic Partial Hand”, The sixth IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics [BIOROB], pp. 548-553, June, 2016. [Link]
  34. Kyongho Park and Youngjin Choi, “System Identification Method for Robotic Manipulator based on Dynamic Momentum Regressor”, IEEE International Conference on Control and Automation [ICCA], pp. 755-760, June, 2016. [Link]
  35. Min Jun Kim, Woongyong Lee, Jae Yeon Choi, Yong Sik Park, Sung Ho Park, Goobong Chung, Kyung-Lyong Han, Il Seop Choi, Il Hong Suh, Youngjin Choi, and Wan Kyun Chung, “Powered Upper-Limb Control using Passivity-Based Nonlinear Disturbance Observer for Unknown Payload Carrying Applications”, IEEE International Conference on Robotics and Automation [ICRA], pp. 2340-2346, May, 2016. [Link]
  36. Minsang Seo, Dukchan Yoon, Junghoon Kim, and Youngjin Choi, “EMG-based Prosthetic Hand Control System Inspired by Missing-Hand Movement”, The 12th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 290-291, Oct., 2015 [Link]
  37. Geon Lee, Youngjin Choi and Sungon Lee, “Convolution-based Trajectory Generation under Discontinuously Assigned Target Angles”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], Late Breaking Poster, Paper ThAP.56, Oct., 2015.
  38. Sajjad Manzoor, and Youngjin Choi, “Multi-Robot Coordination Algorithm to Direct-Intercept and Surround a Target”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], Late Breaking Poster, Paper ThAP.59, Oct., 2015.
  39. Dukchan Yoon, and Youngjin Choi, “Self-Adaptive Index Finger Mechanism for Partial Prosthesis”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], Late Breaking Poster, Paper ThAP.66, Oct., 2015.
  40. Junho Park, Geon Lee, and Youngjin Choi, “Determining ARMA Model Parameters for Biomedical Signal Applications based on Estimation of the Equivalent AR Model”, The 12th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 456-457, Oct., 2015 [Link]
  41. Sajjad Manzoor and Youngjin Choi, “Neural Oscillator-based Multi-Robot Coordination Algorithm to Catch-Observe-Protect a Target”, IEEE International Conference on Mechatronics and Automation [ICMA], pp. 1418-1423, Aug., 2015. [Link] (Best Paper Finalist)
  42. Sajjad Manzoor and Youngjin Choi, “Central Pattern Generator Based Locomotion in Inchworm Robot”, The 11th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 419-422, Nov., 2014. [Link]
  43. Jongguk Yim, Soohyeon Kim, and Youngjin Choi, “Adaptive Torque Control of Hydraulic Actuators Based on Dynamics Compensation”, The 11th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 448-451, Nov., 2014. [Link]
  44. Giho Jang and Youngjin Choi, “EMG-based Continuous Control Method for Electric Wheelchair”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp.3549-3554, Sep., 2014. [Link]
  45. Sajjad Manzoor, Mi Jung Kim, and Youngjin Choi, “Robotic Leg-Lengthening Fixator using Hybrid Position/Force Control”, IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems [CYBER], pp. 579-584, June, 2014. [Link]
  46. Youngjin Choi, Seonghan Lee, and Jongguk Yim, “Inverse Dynamics-based Torque Tracking Control for Rotary-type Hydraulic Actuators”, International Conference on Electronics, Information and Communication [ICEIC], pp. 53-54, 2014.
  47. Giho Jang, An Yong Lee and Youngjin Choi, “Index Finger Prosthesis Control Method according to Human Intention”, International Conference on Control, Automation and Systems [ICCAS], pp. 191-194, 2013. [Link]
  48. Sajjad Manzoor, Seonghan Lee and Youngjin Choi, “Synchronized Coordination for Omni-directional Mobile Robot with Hemi-circular Wheels using Neural Oscillator”, International Conference on Control, Automation and Systems [ICCAS], pp. 1534-1536, 2013. [Link]
  49. An Yong Lee, Giho Jang and Youngjin Choi, “Infinitely Differentiable and Continuous Trajectory Planning for Mobile Robot Control”, The 10th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 357-361, 2013. [Link]
  50. Junghoon Kim, Giho Jang, An Yong Lee, Youngjin Choi, and Si-Jung (Jun) Kim, “Initial Experiment of Data Acquisition System for Tele-Handshaking”, The 10th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 125, 2013. (Video Paper) [Link]
  51. Giho Jang, Youngjin Choi, and Zhihua Qu, “Rock-Paper-Scissors Prediction Experiments using Muscle Activations”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp.5133-5134, Oct., 2012. (Video Paper) [Link]
  52. Geon Lee, Doik Kim, and Youngjin Choi, “Faster and Smoother Trajectory Generation considering Physical System Limits under Discontinuously Assigned Target Angles”, ”, IEEE Int. Conf. on Mechatronics and Automation [ICMA], pp. 1196-1201, Aug., 2012. (Best Paper Finalist) [Link]
  53. Hoyul Lee, Yonghwan Oh, Woong Hee Shon, and Youngjin Choi, “Stackable Manipulator for Mobile Manipulation Robot”, IEEE International Conference on Robotics and Automation [ICRA], pp. 1964-1969, May, 2012. [Link]
  54. Geon Lee, Byung-Ju Yi, Doik Kim, and Youngjin Choi, “New Robotic Motion Generation using Digital Convolution with Physical System Limitation”, IEEE Conference on Decision and Control and European Control Conference, [CDC-ECC], pp. 698-703, Dec., 2011. [Link]
  55. Junghoon Kim and Youngjin Choi, “Trajectory Generation of Wheeled Mobile Robot using Convolution Method”, 8th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 371-374, Nov., 2011. [Link]
  56. Dongchul Lee and Youngjin Choi, “Development of Compact Data Glove System”, 7th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 627-628, Nov., 2010.
  57. Geon Lee and Youngjin Choi, “Novel Trajectory Generation Method using Convolution Operation”, 7th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 525-527, Nov., 2010.
  58. Muhammad Bilal Khan, Sajjad Manzoor, and Youngjin Choi,, “Passageway Modeling between Neural Signal and Muscle Activation”, International Conference on Control, Automation and Systems [ICCAS], pp. 1164-1166, Oct., 2010. [Link]
  59. Hoyul Lee and Youngjin Choi, “Stackable 4-BAR Mechanisms and Their Robotic Applications”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 2792-2797, Oct., 2010. [Link]
  60. Hoyul Lee, Chulwoo Lee, Seongjin Kim and Youngjin Choi, “New Actuator System using Movable Pulley for Bio-mimetic System and Wearable Robot Applications”, IEEE International Conference on Robotics and Automation [ICRA], pp. 2183-2188, May, 2010. [Link]
  61. Hoyul Lee, Byung-Ju Yi and Youngjin Choi, “Grasping Algorithm for Varied Objects”, 6th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 760-763, Oct., 2009.
  62. Geon Lee, Youngjin Choi, Jinhyun Kim and Suk-Joong Kim, “Jerk-Bounded Trajectory Generation Method using Digital Convolution”, 6th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 689-691, Oct., 2009.
  63. Giho Jang and Youngjin Choi, “Walking Pattern Generation using Approximate Unstable Zero Cancelation and Its Compensation Method”, 6th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 794-797, Oct., 2009.
  64. Hyeon-Jae Yu and Youngjin Choi, “EMG-based Real-Time Joint Angle Extraction Method for Human Elbow: Pre-processing and Optimization Process”, 6th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 80-85, Oct., 2009.
  65. Youngjin Choi, “New Form of Block Matrix Inversion”, IEEE/ASME International Conference on Advanced Intelligent Mechatronics [AIM], pp. 1952-1957 Jul., 2009. [Link]
  66. Jae Yeon Choi, Youngjin Choi and Byung-Ju Yi,, “A Up-Stair Motion Planning Algorithm for a Biped Robot”, 5th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 681-686, Nov., 2008.
  67. Je-Keun Oh, Giho Jang, Hyunchul Lee, Se Min Oh, Seung-Chul Lee, Youngjin Choi, Byung-Ju Yi, Hai Won Yang, Jeong Ho Lee and Young Shik Moon, “Robotic System for Searching Cracks beneath Bridge”, 5th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 763-768, Nov., 2008.
  68. Jae Yeon Choi, Youngjin Choi and Byung-Ju Yi, “Force Sensor-less Interaction Force Control in the Deburring Task Using Dual-arm Manipulation”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 967-973, Sep., 2008. [Link]
  69. Sungkon Kim, Jung Seok Lee, Youngjin Choi and Young Shik Moon, “Intelligent Bridge Management System based on the Image Data From Robotic Devices”, 4th Int. Conf. on Bridge Maintenance, Safety and Management [IABMAS], pp. 1215-1222, Jul., 2008. [Link]
  70. Je-Keun Oh, An-Yong Lee, Se Min Oh, Youngjin Choi, Byung-Ju Yi and Hai Won Yang, Jeong Ho Lee and Young Shik Moon, “Bridge Inspection Robot System with Novel Image Processing”, 4th Int. Conf. on Bridge Maintenance, Safety and Management [IABMAS], pp. 1207-1214, Jul., 2008. [Link]
  71. Jae Yeon Choi, Youngjin Choi and Byung-Ju Yi, “A New Motion Planning Algorithm for a Biped Robot using Kinematic Redundancy and ZMP Constraint Equation”, 4th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 458-463, Nov., 2007.
  72. Youngjin Choi and Byung-Ju Yi, “Parameter Identification of Dynamic Systems using Hamiltonian Regressor”, 4th International Conference on Ubiquitous Robots and Ambient Intelligence [URAI], pp. 429-432, Nov., 2007.
  73. Hyeon-Jae Yu and Youngjin Choi, “Real Time Tracking Algorithm of sEMG-based Human Arm Motion”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 3416-3421, Nov., 2007.[Link]
  74. Jae Yeon Choi, Youngjin Choi, and Byung-Ju Yi “Multi-constrained motion planning of a planar-type humanoid using kinematic redundancy”, International Conference on Control, Automation and Systems, [ICCAS], pp. 622-627, Oct., 2007. [Link]
  75. Je-Keun Oh, An-Yong Lee, Se Min Oh, Youngjin Choi, Byung-Ju Yi, and Hai Won Yang “Design and Control of Bridge Inspection Robot System”, IEEE Int. Conf. on Mechatronics and Automation [ICMA], pp. 3634-3639, Aug., 2007. [Link]
  76. Youngjin Choi, and Doik Kim “On the Balancing Control of Humanoid Robot”, International Conference on Informatics in Control, Automation and Robotics [ICINCO], pp. 248-252, May, 2007.
  77. Youngjin Choi, “PID State Observer for Robotic Systems”, Proceedings of the American Control Conference [ACC], pp. 5008-5013, Jun., 2006. [Link]
  78. Youngjin Choi, Doik Kim, and Bum-Jae You, “On the Walking Control for Humanoid Robot based on the Kinematic Resolution of COM Jacobian with Embedded Motion”, IEEE International Conference on Robotics and Automation [ICRA], pp, 2655-2660, May, 2006. [Link]
  79. Doik Kim, Youngjin Choi, and Changhwan Kim, “Motion-Embedded COG Jacobian For a Realtime Humanoid Motion Generation”, International Conference on Informatics in Control, Automation & Robotics [ICINCO], pp, 55-61, Aug., 2005. [Link]
  80. Doik Kim, Youngjin Choi, Yonghwan Oh, and Bum-Jae You, “Real-Time Generation of Humanoid Motion with the Motion-Embedded COG Jacobian”, the International Conference on Control, Automation and Systems [ICCAS], pp, 2148-2153, Jun. 2005. }
  81. Youngjin Choi, Je-Hun You, Yonghwan Oh, Bum-Jae You and Sang-Rok Oh, “Automatic Performance Tuning of Decentralized Motion Controllers for a Small Humanoid (Babybot)”, The 4th International Conference on Advanced Mechatronics [ICAM], pp. 493-498, Oct. 2004.
  82. N. X. Dao, Bum-Jae You, Sang-Rok Oh, and Youngjin Choi, “Simple Visual Self-localization for Indoor Mobile Robots using Single Video Camera”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 3767-3772, Oct. 2004. [Link]
  83. Youngjin Choi, Bum-Jae You, and Sang-Rok Oh, “On the Stability of Indirect ZMP Controller for Biped Robot Systems”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 1966-1971, Oct., 2004. [Link]
  84. Kwangjin Yang, Youngjin Choi, and Wan Kyun Chung, “Performance Analysis of Discrete-Time Disturbance Observer for Second-Order Systems”, IEEE Conference on Decision and Control [CDC], pp. 4877-4882, Dec. 2003. [Link]
  85. Yonghwan Oh, Youngjin Choi, Bum-Jae You, and Sang Rok Oh, “Development of a Biped Humanoid Robot: Babybot”, Int. Conf. on Mechatronics and Information Technology [ICMIT], pp. 690-695, 2003.
  86. Youngjin Choi, Yonghwan Oh, Sang Rok Oh and Wan Kyun Chung, “Auto-tuning PID Controller for Robotic Manipulators”, Proc. of the American Control Conference [ACC], pp. 350-355, 2003. [Link]
  87. Kwangjin Yang, Youngjin Choi, Wan Kyun Chung, Il Hong Suh and Sang Rok Oh, “Robust Tracking Control of Optical Disk Drive Systems Using Error Based Disturbance Observer and Its Performance Measure”, Proceedings of the American Control Conference [ACC], pp. 1395-1400, 2002.[Link]
  88. Youngjin Choi, Wan Kyun Chung, and Youngil Youm, “On the Optimal PID Performance Tuning for Robotic Manipulators”, IEEE/RSJ International Conference on Intelligent Robots and Systems [IROS], pp. 1656-1661, 2001. [Link]
  89. Youngjin Choi, Wan Kyun Chung, Yonghwan Oh, Sang Rok Oh, and Il Hong Suh, “On the Task Priority Manipulation Scheme with High Execution Performance for a Robotic Manipulator”. International Conference on Advanced Robotics [ICAR], pp. 113-118, 2001. [Link]
  90. Youngjin Choi and Wan Kyun Chung, “On the Optimality and Performance of PID Controller for Robotic Manipulators”, IEEE International Conference on Robotics and Automation [ICRA], pp. 1142-1148, 2001.[Link] (Best Paper Finalist)
  91. Jonghoon Park, Youngjin Choi, Wan Kyun Chung, and Youngil Youm, “Multiple Tasks Kinematics Using Weighted Pseudo-Inverse for Kinematically Redundant Manipulators”, IEEE International Conference on Robotics and Automaton [ICRA], pp. 4041-4047, 2001. [Link]
  92. Youngjin Choi, Wan Kyun Chung, and Youngil Youm, “On Stable H∞ Controller Parameterization using Doubly Coprime Factorization”, IEEE International Conference on Decision and Control [CDC], pp. 3230-3235, 2000.[Link]
  93. Youngjin Choi, Wan Kyun Chung, and Sang Rok Oh, “Task Priority Control of Redundant Manipulators”, International Symposium on Artificial Life and Robotics [AROB], pp. 402-405, 2000.
  94. Youngjin Choi, Wan Kyun Chung, and Youngil Youm, “Robust Control of Manipulators using Hamitonian Optimization”, IEEE International Conference on Robotics and Automation [ICRA], pp. 2358 -2364, 1997. [Link]
  95. Youngjin Choi, Wan Kyun Chung, Il Hong Suh and Sang Rok Oh, “Standard H∞ State-Space Solution by Youla Parameterization”, IFAC-IFIP-IMACS Conference on Control of Industrial Systems, pp. 133-138, 1997.
  96. Youngjin Choi, Wan Kyun Chung, and Youngil Youm, “An Analysis on Worst-case State Estimation in Standard State-Space Solution”, Korea Automatic Control Conference [KACC] International Version in English, pp. 56-59, 1996.
  97. Youngjin Choi, Wan Kyun Chung, and Youngil Youm, “Disturbance Observer in H∞ Frameworks”, IEEE International Conference on Industrial Electronics Control and Instrumentation [IECON], pp. 1394-1400, 1996. [Link]