**1. Books & Chapters ** 

  - Youngjin Choi, "**PID Control Design for Robotic Manipulator**", Hanyang University Press, 120P, ISBN 978-89-7218-643-4 (95560), Dec. 16, 2019 [[  https://play.google.com/store/books/details?id=kWDGDwAAQBAJ| [Link]]] 
  - 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. [[  https://link.springer.com/referenceworkentry/10.1007/978-94-007-7194-9_70-1| [Link]]] 
  - Youngjin Choi and Wan Kyun Chung “**PID Trajectory Tracking Control for Mechanical Systems**”, 111P, Springer, ISBN: 3-540-20567-5, 2004. [[http://www.springer.com/engineering/robotics/book/978-3-540-20567-8|[Link]]]


**2. Papers**

**(2.1) International Journal Papers**

  - 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. [[ 
 https://www.nature.com/articles/s41598-024-72891-1 | [Link] ]]
  - 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. [[ 
 https://ieeexplore.ieee.org/document/10530920 | [Link] ]]
  - 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%) [[ https://www.liebertpub.com/doi/10.1089/soro.2021.0097 | [Link] ]]
  - 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] [[ https://ieeexplore.ieee.org/document/9724119 | [Link] ]] (소프트모핑 50%)
  - 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  [[ https://ieeexplore.ieee.org/document/9722898 | [Link] ]] (공압텐던 50%, 소프트모핑 50%) 
  - 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] [[ https://ieeexplore.ieee.org/document/9152097 | [Link] ]] (생체모사 100%)
  - 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]  [[ https://asmedigitalcollection.asme.org/mechanismsrobotics/article/doi/10.1115/1.4052124/1115748 | [Link] ]]  (공압텐던 50%, 소프트모핑 50%) 
  - 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] [[ https://www.sciencedirect.com/science/article/pii/S2468122921006265?via%3Dihub | [Link] ]]
  - 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] [[ https://ieeexplore.ieee.org/document/9346042 | [Link] ]] (공압텐던 50%, 소프트모핑 50%) 
  -  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] [[ https://ieeexplore.ieee.org/document/9527227 | [Link] ]] (공압텐던 50%, 소프트모핑 50%) 
  - 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]  [[ https://ieeexplore.ieee.org/document/9536408 | [Link] ]]  (소프트모핑 50%)
  - 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] [[ https://ieeexplore.ieee.org/document/9312146 | [Link] ]] (생체모사 50%, 공압텐던 50%) 
  - 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] [[ https://www.mdpi.com/2227-9032/9/7/839 | [Link] ]] (공압텐던 50%, 소프트모핑 50%) 
  - 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] [[ https://asmedigitalcollection.asme.org/mechanicaldesign/article/doi/10.1115/1.4048719 | [Link] ]] (생체모사 100%)
  - 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] [[ https://ieeexplore.ieee.org/document/9381589 | [Link] ]] (공압텐던 50%, 소프트모핑 50%) 
  - 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] [[ https://www.mdpi.com/1424-8220/21/4/1364 | [Link] ]] (공압텐던 50%, 소프트모핑 50%).  
  - 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] [[ https://fashionandtextiles.springeropen.com/articles/10.1186/s40691-020-00237-2 | [Link] ]] 
  - 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] [[  https://www.mdpi.com/1424-8220/20/14/3904 | [Link]]]  
  - 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] [[ https://www.mdpi.com/2076-3417/10/12/4384 | [Link]]] (생체모사 100%)
  - 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] [[ https://doi.org/10.1155/2020/7585976 | [Link]]] (생체모사 100%)
  - 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] [[ https://www.mdpi.com/2076-3417/10/10/3536 | [Link]]] (생체모사 100%)
  - 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] [[ https://iopscience.iop.org/article/10.1088/1361-665X/ab6690 | [Link]]] (생체모사 100%)
  - 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] [[  https://www.mdpi.com/1424-8220/20/4/1196 | [Link]]] (생체모사 100%)
  - 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] [[ https://www.actapress.com/Abstract.aspx?paperId=46460 | [Link]]] (생체모사 50%)
  - 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] [[ https://www.mdpi.com/2076-3417/10/4/1271 | [Link]]] (생체모사 50%)
  - 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] [[ https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/s12891-020-3050-x | [Link]]] (생체모사 100%)
  - 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] [[ https://ieeexplore.ieee.org/document/8966364 | [Link]]] (생체모사 50%, 공압텐던 50%)
  - 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] [[ https://ieeexplore.ieee.org/document/8962101 | [Link]]] (생체모사 100%)
  - 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] [[ https://link.springer.com/article/10.1007/s11370-019-00279-6 | [Link]]] (Best Journal Paper) 
  - 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] [[https://ieeexplore.ieee.org/document/8750788 | [Link]]]
  - 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] [[http://link.springer.com/article/10.1007/s10846-018-0864-y | [Link]]]
  - 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] [[http://ieeexplore.ieee.org/document/8438528/ | [Link]]]
  - 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] [[http://ieeexplore.ieee.org/document/7968485 |[Link]]]  
  - 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] [[http://link.springer.com/article/10.1007/s10846-016-0443-z |[Link]]] 
  - 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] [[http://ieeexplore.ieee.org/document/7574318 |[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7393830|[Link]]] 
  - 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] [[http://link.springer.com/article/10.1007/s11370-015-0192-z|[Link]]] 
  - 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] [[http://pic.sagepub.com/content/230/4/573.abstract|[Link]]]
  - 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] [[http://www.sciencedirect.com/science/article/pii/S0925231215012813|[Link]]] 
  - 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] [[ http://pic.sagepub.com/content/229/12/2127.abstract | [Link]]]
  - 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] [[ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7101283 | [Link]]]
  - 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] [[ http://link.springer.com/article/10.1007/s11370-015-0165-2 |[Link]]]
  - 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][[http://link.springer.com/article/10.1007/s12541-014-0580-x|[Link]]]  
  - 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] [[http://link.springer.com/article/10.1007/s12555-013-0102-0|[Link]]]
  - 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] [[http://link.springer.com/article/10.1007/s12555-013-0073-1|[Link]]]
  - 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] [[http://www.sciencedirect.com/science/article/pii/S0957415813000172|[Link]]] 
  - 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] [[http://dynamicsystems.asmedigitalcollection.asme.org/article.aspx?articleid=1656771|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6022796|[Link]]] 
  - 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]  [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5686941|[Link]]] 
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6125795|[Link]]] 
  - 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]  [[http://link.springer.com/article/10.1007/s12555-011-0221-4|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5337898|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5463196|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5434614|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5288565|[Link]]]
  - 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] [[http://www.sciencedirect.com/science/article/pii/S0926580509000600|[Link]]] 
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4648871|[Link]]]
  - 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]  [[http://www.kps.or.kr/jkps/abstract_view.asp?articleuid=1939AF10-DE6A-4C6E-BFE5-24275D7A9B48&globalmenu=3&localmenu=10|[Link]]]
  - 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] [[http://dynamicsystems.asmedigitalcollection.asme.org/article.aspx?articleid=1475887|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4359259|[Link]]] 
  - Youngjin Choi, “**PID State Estimator for Lagrangian Systems**”, IET Control Theory & Applications, vol. 1, No. 4, Jul., pp 937-945, 2007. [SCI] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4271400|[Link]]]
  - 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] [[http://dynamicsystems.asmedigitalcollection.asme.org/article.aspx?articleid=1410775|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1391117|[Link]]]
  - 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] [[http://www.tandfonline.com/doi/abs/10.1163/1568553041257422|[Link]]] 
  - 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][[http://onlinelibrary.wiley.com/doi/10.1111/j.1934-6093.2003.tb00112.x/abstract|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1178919|[Link]]]
  - 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] [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=976011|[Link]]] 
  - 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][[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=956060|[Link]]]


**(2.2) International Conference Papers**
  - 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%)
  - 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%)
  - 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%)
  - 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%) 
  - 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%) [[ https://ieeexplore.ieee.org/document/10687604 | [Link]]]
  - 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%) [[https://ieeexplore.ieee.org/document/10687540 | [Link]]]
  - 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%) [[https://ieeexplore.ieee.org/abstract/document/9826237 | [Link]]]
  - 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%)
  - 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%)
  - 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  
  - 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 
  - 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  
  - 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  
  - 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 
  - 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 
  - 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 [[ https://ieeexplore.ieee.org/document/8768647 |[Link]]]
  - 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 [[ https://ieeexplore.ieee.org/document/8768698 |[Link]]]
  - 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 [[ https://ieeexplore.ieee.org/document/8794151 |[Link]]]
  - 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]**) [[ https://ieeexplore.ieee.org/document/8612226 |[Link]]]
  - 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 [[ https://ieeexplore.ieee.org/document/8594510 |[Link]]]
  - 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 [[ https://ieeexplore.ieee.org/document/8404911 |[Link]]] 
  - 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  [[ https://ieeexplore.ieee.org/document/8324624 |[Link]]]
  - 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.  [[ http://ieeexplore.ieee.org/document/8009408 |[Link]]]  
  - 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. [[ http://ieeexplore.ieee.org/document/8009425 |[Link]]] 
  - 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 [[ http://ieeexplore.ieee.org/document/7992835 |[Link]]] 
  - 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 [[ http://ieeexplore.ieee.org/document/7992763 |[Link]]] 
  - 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 [[ http://ieeexplore.ieee.org/document/7992793 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/document/7992800 |[Link]]]  
  - 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.  [[ http://ieeexplore.ieee.org/document/7822450 |[Link]]]  
  - 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. [[ http://ieeexplore.ieee.org/document/7759725 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/document/7625781 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/document/7625739 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7523683 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7505369 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7487384 |[Link]]]
  - 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 [[ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7358955 |[Link]]] 
  - 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. 
  - 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. 
  - 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. 
  - 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 [[ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7358904 |[Link]]] 
  - 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. [[ http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7237693 |[Link]]] (**Best Paper Finalist**)  
  - 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. [[ http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7057474 |[Link]]]
  - 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. [[ http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7057453&tag=1 |[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6943058|[Link]]] 
  - 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. [[http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6917528|[Link]]] 
  - 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. 
  - 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. [[http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6703890|[Link]]] 
  - 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.  [[http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6704131|[Link]]] 
  - 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. [[http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6677386|[Link]]] 
  - 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) [[http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6677489|[Link]]]  
  - 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) [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6386264|[Link]]] 
  - 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**)  [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6283421|[Link]]]
  - 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.  [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6224793|[Link]]]
  - 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.  [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6160276|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6145999|[Link]]]
  - 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. 
  - 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. 
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5669735|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5651921|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5509989|[Link]]]
  - 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. 
  - 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.  
  - 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.  
  - 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. 
  - Youngjin Choi, “**New Form of Block Matrix Inversion**”, IEEE/ASME International Conference on Advanced Intelligent Mechatronics [AIM], pp. 1952-1957 Jul., 2009. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5229775|[Link]]]
  - 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. 
  - 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. 
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4651225|[Link]]]
  - 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. [[http://www.crcnetbase.com/doi/abs/10.1201/9781439828434.ch145|[Link]]]
  - 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. [[http://www.crcnetbase.com/doi/pdf/10.1201/9781439828434.ch144|[Link]]]
  - 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. 
  - 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. 
  - 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.[[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4399238|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4407098|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4304150|[Link]]]
  - 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.  
  - Youngjin Choi, “**PID State Observer for Robotic Systems**”, Proceedings of the American Control Conference [ACC], pp. 5008-5013, Jun., 2006. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1657514|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1642102|[Link]]]
  - 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. [[http://www.researchgate.net/publication/221645682|[Link]]]
  - 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. }
  - 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. 
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1390001|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1389686|[Link]]] 
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1272378|[Link]]]
  - 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.  
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1238968|[Link]]]
  - 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.[[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1023216|[Link]]]
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=977216|[Link]]]
  - 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. [[http://conf.uni-obuda.hu/icar2001/14_ICAR2001.pdf|[Link]]]
  - 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.[[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=932765|[Link]]] (**Best Paper Finalist**)
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=933249|[Link]]]
  - 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.[[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=912196|[Link]]]
  - 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.  
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=619314|[Link]]]
  - 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. 
  - 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. 
  - 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. [[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=570587|[Link]]]