Kyunghwan Choi
Kyunghwan Choi, Ph.D.
μ΅œκ²½ν™˜
Principal Investigator
kh.choi@kaist.ac.kr
πŸ“„ Curriculum Vitae (CV)
0000-0002-4832-1597
Google Scholar
Linkedin
Kyunghwan-Choi
Kyunghwan-Choi
11305927

Description

Kyunghwan Choi is an Assistant Professor at the Cho Chun Shik Graduate School of Mobility at the KAIST and Director of the Mobility Intelligence and Control Laboratory (MIC Lab).

His research focuses on optimal and learning-based control for connected, automated, and electrified vehicles (CAEVs).

He received his B.S., M.S., and Ph.D. degrees in Mechanical Engineering from KAIST. He held positions at KAIST and GIST before rejoining KAIST in 2025 as an Assistant Professor.

Professional Experience

  • May 2025 - Present, Assistant Professor, CCS Graduate School of Mobility, KAIST
  • Sep 2022 - May 2025, Adjunct Professor, AI Graduate School, GIST
  • Mar 2022 - May 2025, Assistant Professor, Department of Mechanical and Robotics Engineering, GIST
  • Jan 2021 - Feb 2022, Research Assistant Professor, Research Center for Eco-Friendly & Smart Vehicles, KAIST
  • Mar 2020 - Jan 2021, Postdoctoral Fellow, Research Center for Eco-Friendly & Smart Vehicles, KAIST


Education

  • Ph.D., Mechanical Engineering, KAIST, 2020 (Advisor: Prof. Kyung-soo Kim)
  • M.S., Mechanical Engineering, KAIST, 2016 (Advisor: Prof. Kyung-soo Kim)
  • B.S., Mechanical Engineering, KAIST, 2014 (Graduated magna cum laude)


Hands-on Experience with Mobility Systems

  • Experience in developing various types of mobility systems through active involvement in multiple R&D projects
    • Key Figure
    • Project 1: μžμœ¨μ£Όν–‰ μ „κΈ°μ°¨μš© κ³ μ„±λŠ₯ μ‘°ν–₯μ œμ–΄κΈ°μˆ  개발 (19.1.~21.12, ν•œκ΅­μžλ™μ°¨μ—°κ΅¬μ›)
    • Project 2: μ „κΈ°μ°¨ μ—°κ΄€μ‚°μ—… μœ‘μ„±κΈ°λ°˜ 쑰성사업 (19.1.~21.12, μ œμ£ΌνŠΉλ³„μžμΉ˜λ„)
    • Project 3: 인프라 μ„Όμ‹± 기반 μžμœ¨μ£Όν–‰ μ „κΈ°μžλ™μ°¨ 개발 연ꡬ (19.8.~21.12., KAIST)
    • Project 4: μžμœ¨μ£Όν–‰ κΈ°λŠ₯지원을 μœ„ν•œ μ†Œν”„νŠΈμ›¨μ–΄ μ˜€ν”ˆ APIλ₯Ό κ°€μ§€λŠ” μ „κΈ°μ°¨μš© μƒ€μ‹œν”Œλž«νΌ 개발 (22.6.~23.5., ν•œκ΅­μžλ™μ°¨μ—°κ΅¬μ›)
    • Project 5: μžμœ¨μ£Όν–‰μ„ μœ„ν•œ PBV용 μ‘°ν–₯μ œμ–΄κΈ°μˆ  연ꡬ (23.8.~23.11., ν•œκ΅­μ „μžν†΅μ‹ μ—°κ΅¬μ›)

  • Key contributions and achievements in Project 1
    • Key Figure Key Figure

    International Journal Papers
    1. K. Choi, Y. Kim, S.-K. Kim*, and K.-S. Kim*, β€œComputationally Efficient Model Predictive Torque Control of Permanent Magnet Synchronous Machines Using Numerical Techniques,” IEEE Transactions on Control Systems Technology, vol. 30, no. 4, pp. 1774-1781, 2022.
    2. K. Choi, J. Byun, S. Lee, and I. G. Jang*, β€œAdaptive Equivalent Consumption Minimization Strategy (A-ECMS) for the HEVs with a Near-optimal Equivalent Factor Considering Driving Conditions,” IEEE Transactions on Vehicular Technology, vol. 71, no. 3, pp. 2538-2549, 2022.
    3. J. Byun and K. Choi*, β€œEffects Analysis of Light-duty Diesel Truck Hybrid Conversion Depending on Driving Style,” Transportation Research Part D: Transport and Environment, vol. 97, pp. 102958, 2021.
    4. K. Choi, Y. Kim, K.-S. Kim*, and S.-K. Kim*, β€œReal-time Optimal Torque Control of Interior Permanent Magnet Synchronous Motors Based on a Numerical Optimization Technique,” IEEE Transactions on Control Systems Technology, vol. 29, no. 4, pp. 1815-1822, 2021.
    5. K. Choi, Y. Kim, S.-K. Kim*, and K.-S. Kim*, β€œCurrent and Position Sensor Fault Diagnosis Algorithm for PMSM Drives Based on Robust State Observer,” IEEE Transactions on Industrial Electronics, vol. 68, no. 6, pp. 5227-5236, 2021.
    6. K. Choi, Y. Kim, S.-K. Kim*, and K.-S. Kim, β€œAuto-calibration of Position Offset for PMSM Drives with Uncertain Parameters,” Electronics Letters, vol. 56, no. 20, pp. 1048-1051, 2020.
    7. K. Choi, D. S. Kim, and S.-K. Kim*, β€œDisturbance Observer-based Offset-free Global Tracking Control for Input-constrained LTI Systems with DC/DC Buck Converter Applications,” Energies, vol. 13, no. 16, p. 4079, 2020.
    8. K. Choi, Y. Kim, K.-S. Kim*, and S.-K. Kim*, β€œOutput Voltage Tracking Controller Embedding Auto-tuning Algorithm for DC/DC Boost Converters,” IET Power Electronics, vol. 12, no. 14, pp. 3767-3773, 2019.
    9. K. Choi, K.-S. Kim*, and S.-K. Kim*, β€œProportional-type Sensor Fault Diagnosis Algorithm for DC/DC Boost Converters Based on Disturbance Observer,” Energies, vol. 12, no. 8, p. 1412, 2019.
    10. K. Choi, Y. Kim, K.-S. Kim*, and S.-K. Kim*, β€œUsing the Stator Current Ripple Model for Real-time Estimation of Full Parameters of a Permanent Magnet Synchronous Motor,” IEEE Access, vol. 7, pp. 33369-33379, 2019.

    International Patents - Registered

    1. K.-S. Kim, K. Choi, and I. G. Jang, β€œMethod and apparatus for controlling power of hybrid vehicle considering driving environment,” U.S. Patent 12,097,840, Sep. 24, 2024.
    2. K.-S. Kim, K. Choi, and S.-K. Kim, β€œMethod and apparatus for real-time estimation of full parameters of permanent magnet synchronous motor,” U.S. Patent 11,614,488, Mar. 28, 2023.
    3. I. G. Jang, D. Kum, K.-S. Kim, K. Jang, C. Lee, J. H. Kim, K. Choi, and M. Kim, β€œApparatus and method for operating accessories of vehicle during engine stop using one-way clutch pulley,” U.S. Patent 11,607,944, Mar. 21, 2023.

    International Patents - Pending

    1. K.-S. Kim, K. Choi, and I. G. Jang, β€œMethod and apparatus for controlling power of hybrid vehicle considering transient characteristics,” U.S. Patent Application 18/648,697, Apr. 29, 2024, pending.

    Domestic Patents - Registered

    1. κΉ€κ²½μˆ˜, μ΅œκ²½ν™˜, μž₯인ꢌ, β€œν•˜μ΄λΈŒλ¦¬λ“œ μ°¨λŸ‰μ˜ κ³Όλ„νŠΉμ„±μ„ κ³ λ €ν•œ 동λ ₯μ œμ–΄ 방법 및 μž₯치,” λŒ€ν•œλ―Όκ΅­ νŠΉν—ˆ 10-2701529, 2024.8.28.
    2. κΉ€κ²½μˆ˜, μ΅œκ²½ν™˜, μž₯인ꢌ, β€œν•˜μ΄λΈŒλ¦¬λ“œ μ°¨λŸ‰μ˜ μ£Όν–‰ν™˜κ²½μ„ κ³ λ €ν•œ 동λ ₯μ œμ–΄ 방법 및 μž₯치,” λŒ€ν•œλ―Όκ΅­ νŠΉν—ˆ 10-2508409, 2023.3.6.
    3. κΉ€κ²½μˆ˜, μ΅œκ²½ν™˜, 김석균, β€œμ˜κ΅¬μžμ„λ™κΈ°λͺ¨ν„° 전체 νŒŒλΌλ―Έν„°μ˜ μ‹€μ‹œκ°„ μΆ”μ • 방법 및 μž₯치,” λŒ€ν•œλ―Όκ΅­ νŠΉν—ˆ 10-2437244, 2022.8.24.
    4. μž₯인ꢌ, κΈˆλ™μ„, κΉ€κ²½μˆ˜, μž₯κΈ°νƒœ, 이창우, κΉ€μ’…ν˜Έ, μ΅œκ²½ν™˜, κΉ€λ―ΌκΈ°, β€œμ›μ›¨μ΄ 클러치 풀리λ₯Ό μ΄μš©ν•œ 엔진 정지 μ‹œ μ°¨λŸ‰ λΆ€κ°€μž₯치의 ꡬ동 μž₯치 및 방법,” λŒ€ν•œλ―Όκ΅­ νŠΉν—ˆ 10-2053538, 2019.12.2.
    5. κΉ€κ²½μˆ˜, μž„λ―Έλ¦Ό, μ΅œκ²½ν™˜, κΈˆλ™μ„, β€œμœ μ„±κΈ°μ–΄λ₯Ό μ΄μš©ν•œ μ „κΈ°ν™” μˆ˜λ™λ³€μ†κΈ° 기반 ν•˜μ΄λΈŒλ¦¬λ“œ νŒŒμ›ŒνŠΈλ ˆμΈ μ œμ–΄ 방법,” λŒ€ν•œλ―Όκ΅­ νŠΉν—ˆ 10-2044210, 2019.11.7.

Publications


Quick Links


Papers Under Review


    2026
  1. [New] From Bellman Consistency toward Bellman Optimality: Constrained Online Critic Learning for Nonlinear Optimal Control
    Hyochan Lee, Kyunghwan Choi *
    Withheld during double-blind review , 2026 [πŸ“ƒ Full-Text]
  2. [New] Constrained Optimization-Based Neuro-Adaptive Control (CONAC) for Unknown Systems Under Multiple Convex Input Constraints
    Myeongseok Ryu, Donghwa Hong, Kyunghwan Choi *
    Withheld during double-blind review , 2026 [πŸ“ƒ Full-Text] [GitHub logo Code]
  3. [New] Physics-Constrained Kalman Filtering for Wheel Normal Load Estimation Using Suspension and IMU Measurements
    Angus Siegloff, Myeongseok Ryu, Kyunghwan Choi *
    IEEE Transactions on Vehicle Technology , 2026 [πŸ“ƒ Full-Text]
  4. [New] CAR Planner: Constrained-Attention-Based Robust Imitation Learning for Autonomous Driving
    Jiyun Kim, Kyunghwan Choi *
    Withheld during double-blind review , 2026 [πŸ“ƒ Full-Text]
  5. [New] Model Predictive Control for Active Rear Steering Without Sideslip-Angle Feedback
    Myeongseok Ryu, Soobin Hwang, Kyunghwan Choi *
    American Control Conference (ACC) , 2027 [πŸ“ƒ Full-Text]

International Journal Papers


    2026
  1. Synthesis of a Link-Level Energy-Time Predictor Toward the Implementation of a Link-based Predictive EMS
    Geunyoung Park, Kyunghwan Choi , Dongsuk Kum*
    IEEE Access (Early Access) , 2026 [🌐 Online]
  2. Model-Adaptive Predictive Torque Control of IPMSMs for Online Optimal Operation: A Lookup-Table-Free Approach
    Jongseok Kim, Kyunghwan Choi , Youngseok Lee, Ki-Bum Park*
    IEEE Transactions on Transportation Electrification (Early Access) , 2026 [🌐 Online]

    3. 2025
  3. Development of a Real-time Link-Based Predictive Energy Management Strategy for Extending FCEV Lifespan Using an Experiment-driven Degradation Model
    Geunyoung Park, Kyunghwan Choi , Minjun Kim, EunAe Cho, Kyungsub Sung, Dongsuk Kum*
    Applied Energy , vol. 397, no. 16, 2025 [🌐 Online]
  4. Predictive Control of a Dog-Clutch Transmission via a Transformer-Based Velocity Prediction
    Geunyoung Park, Kyunghwan Choi , Dongsuk Kum*
    IEEE Transactions on Vehicular Technology , vol. 74, no. 5, pp. 7430-7443, 2025 [🌐 Online]
  5. Cooperative Merging in Mixed Traffic Based on Strategic Influence of Connected Automated Vehicles on Human-Driven Vehicle Behavior
    Kyunghwan Choi *, Seongjae Shin, Minseok Seo
    Advanced Intelligent Systems , pp. 2400797, 2025 [🌐 Online]

    6. 2024
  6. Generalized Model Predictive Torque Control of Synchronous Machine
    Kyunghwan Choi , Jongseok Kim, Ki-Bum Park*
    IEEE/ASME Transactions on Mechatronics , pp. 1-11, 2024 [🌐 Online]
  7. An Analytical Approach to the Predictive Energy Management of Connected HEVs: What Information Do We Need to Guarantee Global Optimality?
    Kyunghwan Choi , Geunyoung Park, Dongsuk Kum*
    IEEE Transactions on Intelligent Transportation Systems , vol. 25, no. 9, pp. 12749-12761, 2024 [🌐 Online]

    8. 2023
  8. A Current Sensor Fault-detecting Method for Onboard Battery Management Systems of Electric Vehicles Based on Disturbance Observer and Normalized Residuals
    Wooyong Kim, Kunwoo Na, Kyunghwan Choi *
    International Journal of Control, Automation and Systems , vol. 21, no. 11, pp. 3563-3573, 2023 [🌐 Online]
  9. Chattering Reduction of Sliding Mode Control via Nonlinear Disturbance Observer for Anti-lock Braking System and Verification with Carsim Simulation
    Minseong Choi, Kyunghwan Choi , Minsu Cho, Minyoung Lee, Kyung-Soo Kim*
    International Journal of Automotive Technology , vol. 24, no. 4, pp. 1141–1149, 2023 [🌐 Online]

    10. 2022
  10. Output-Feedback Multi-Loop Positioning Technique via Dual Motor Synchronization Approach for Elevator System Applications
    Hyochan Lee, Hyeoncheol Lee, Jaekwang Lee, Hyunduck Choi, Kyunghwan Choi , Younghun Kim, Seokkyoon Kim*
    Energies , vol. 15, no. 23, pp. , 2022 [🌐 Online]
  11. Real-Time Predictive Energy Management Strategy for Fuel Cell-Powered Unmanned Aerial Vehicles Based on the Control-Oriented Battery Model
    Kyunghwan Choi , Wooyong Kim*
    IEEE Control Systems Letters , vol. 7, pp. 943-948, 2022 [🌐 Online]
  12. Adaptive Equivalent Consumption Minimization Strategy (A-ECMS) for the HEVs With a Near-Optimal Equivalent Factor Considering Driving Conditions
    Kyunghwan Choi , Jihye Byun, Sangmin Lee, In Gwun Jang*
    IEEE Transactions on Vehicular Technology , vol. 71, no. 3, pp. 2538-2549, 2022 [🌐 Online]
  13. Computationally Efficient Model Predictive Torque Control of Permanent Magnet Synchronous Machines Using Numerical Techniques
    Kyunghwan Choi , Yonghun Kim, Seok-Kyoon Kim*, Kyung-Soo Kim*
    IEEE Transactions on Control Systems Technology , vol. 30, no. 4, pp. 1774-1781, 2022 [🌐 Online]
  14. Model-Predictive-Control-Based Time-Optimal Trajectory Planning of the Distributed Actuation Mechanism Augmented by the Maximum Performance Evaluation
    Jong Ho Kim, Kyunghwan Choi , Gwun Jang*
    Applied Sciences , vol. 11, 2022 [🌐 Online]
  15. Current Sensorless State of Charge Estimation Approach for Onboard Battery Systems with an Unknown Current Estimator
    Wooyong Kim, Kyunghwan Choi *
    Journal of Energy Storage , vol. 52, 2022 [🌐 Online]

    16. 2021
  16. Effects Analysis of Light-duty Diesel Truck Hybrid Conversion Depending on Driving Style
    Jihye Byun, Kyunghwan Choi *
    Transportation Research Part D: Transport and Environment , vol. 97, pp. 102958, 2021 [🌐 Online]
  17. Real-Time Optimal Torque Control of Interior Permanent Magnet Synchronous Motors Based on a Numerical Optimization Technique
    Kyunghwan Choi , Yonghun Kim, Seok-Kyoon Kim*, Kyung-Soo Kim*
    IEEE Transactions on Control Systems Technology , vol. 29, no. 4, pp. 1815-1822, 2021 [🌐 Online]
  18. Current and Position Sensor Fault Diagnosis Algorithm for PMSM Drives Based on Robust State Observer
    Kyunghwan Choi , Yonghun Kim, Seok-Kyoon Kim*, Kyung-Soo Kim*
    IEEE Transactions on Industrial Electronics , vol. 68, no. 6, pp. 5227-5236, 2021 [🌐 Online]

    19. 2020
  19. Auto-calibration of Position Offset for PMSM Drives with Uncertain Parameters
    Kyunghwan Choi , Yonghun Kim, Kyung-Soo Kim, Seok-Kyoon Kim*
    Electronics Letters , vol. 56, no. 20, pp. 1048-1051, 2020 [🌐 Online]
  20. Disturbance Observer-Based Offset-Free Global Tracking Control for Input-Constrained LTI Systems with DC/DC Buck Converter Applications
    Kyunghwan Choi , Dong Soo Kim, Seok-Kyoon Kim*
    Energies , vol. 13, no. 16, pp. 4079, 2020 [🌐 Online]

    21. 2019
  21. Output Voltage Tracking Controller Embedding Auto-tuning Algorithm for DC/DC Boost Converters
    Kyunghwan Choi , Yonghun Kim, Kyung-Soo Kim*, Seok-Kyoon Kim*
    IET Power Electronics , vol. 12, no. 14, pp. 3767-3773, 2019 [🌐 Online]
  22. Proportional-Type Sensor Fault Diagnosis Algorithm for DC/DC Boost Converters Based on Disturbance Observer
    Kyunghwan Choi , Kyung-Soo Kim*, Seok-Kyoon Kim*
    Energies , vol. 12, no. 8, pp. 1412, 2019 [🌐 Online]
  23. Using the Stator Current Ripple Model for Real-time Estimation of Full Parameters of a Permanent Magnet Synchronous Motor
    Kyunghwan Choi , Yonghun Kim, Kyung-Soo Kim*, Seok-Kyoon Kim*
    IEEE Access , vol. vol. 7, pp. 33369-33379, 2019 [🌐 Online]

    24. 2017
  24. Mixed-Modality Stimulation to Evoke Two Modalities Simultaneously in One Channel for Electrocutaneous Sensory Feedback
    Kyunghwan Choi , Pyungkang Kim, Kyung-Soo Kim*, Soohyun Kim*
    IEEE Transactions on Neural Systems and Rehabilitation Engineering , vol. 52, pp. 2258-2269, 2017 [🌐 Online]

International Conference Papers


    2026
  1. [New] TRIAD Planner: Three-Level Robust Imitation Learning for Autonomous Driving
    Jiyun Kim, Ahmad Mouri Zadeh Khaki, Kyunghwan Choi *
    Conference on Robot Learning (CoRL) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  2. [New] Constrained Optimization-Based Yaw-Rate Reference Map Generation for Active Rear Steering Control of Four-Wheel-Steering Vehicles
    Myeongseok Ryu, Donghyun Hwang, Youngsik Yoon, Kyunghwan Choi *
    International Conference on Control, Automation and Systems (ICCAS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  3. Vector-Space Optimization Framework Based on Projected Contraction Condition for Control Design with Input Saturation
    Myeongseok Ryu, Kyunghwan Choi *, Sesun You
    International Federation of Automatic Control (IFAC) World Congress (accepted, in press), 2026 [πŸ“ƒ Full-Text] [πŸŽ₯ Presentation]
  4. Online Physics-Informed Learning-Based Identification: Application to Adaptive MTPA Control of Synchronous Machines
    Seunghun Jang, Kyunghwan Choi *
    International Federation of Automatic Control (IFAC) World Congress (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  5. Online Constrained Reinforcement Learning for Optimal Tracking
    Hyochan Lee, Kyunghwan Choi *
    International Federation of Automatic Control (IFAC) World Congress (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  6. Industry-Integrated Motor Systems Education: Bridging Classical Control, AI, and Real-World Applications
    Pilwon Hur*, Hyosung Ahn, Kyunghwan Choi , Junpyo Lee
    International Federation of Automatic Control (IFAC) World Congress (accepted, in press), 2026
  7. CARE Planner : Constrained Attention and Risk-aware Planning for Imitation based Autonomous Driving
    Jiyun Kim, Kyunghwan Choi *
    International Federation of Automatic Control (IFAC) World Congress (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  8. Online Learning of Control-Oriented Lateral Tire-Force Maps for Vehicle MPC
    Donghwa Hong, Kyunghwan Choi *
    International Workshop on Intelligent Systems (IWIS) , pp. 1-4, 2026 [🌐 Online]
  9. Traffic Network-Aware Energy Management for FCEVs: Integrating Trip-Specific Control and Long-Run Optimality
    Kyunghwan Choi *
    Asian Control Conference (ASCC) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  10. LLM-PPO Driver: Improving Autonomous Driving via LLM-Guided Reward Shaping and Imitation Learning
    Ahmad Mouri Zadeh Khaki, Kyunghwan Choi *
    Asian Control Conference (ASCC) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  11. Integral Error-Based Adaptive Neural Identifier for Nonlinear Lateral Tire Forces
    Donghwa Hong, Kyunghwan Choi *
    IEEE International Conference on Advanced Motion Control (AMC) , pp. 1-6, 2026 [🌐 Online] [πŸ“ƒ Full-Text]
  12. All-Wheel Steering Vehicle Control Based on Contraction Theory with Neural Network
    Myeongseok Ryu, Kyunghwan Choi *
    IEEE International Conference on Advanced Motion Control (AMC) , pp. 1-6, 2026 [🌐 Online] [πŸ“ƒ Full-Text] [πŸŽ₯ Presentation] [πŸ’Ύ Cite]

    13. 2025
  13. State-Dependent Lagrange Multipliers for State-Wise Safety in Constrained Reinforcement Learning
    Minseok Seo, Kyunghwan Choi *
    International Conference on Robot Intelligence Technology and Applications (RiTA) (accepted, in press), 2025 [🌐 Preprint] [πŸ“ƒ Full-Text]
  14. Mitigating Attention Collapse via Mean-Deviation Constrained Optimization
    Jiyun Kim, Kyunghwan Choi *
    International Conference on Robot Intelligence Technology and Applications (RiTA) (accepted, in press), 2025 [🌐 Preprint] [πŸ“ƒ Full-Text]
      πŸ“„ Awarded Best Intelligent Paper Award at the 2025 International Conference on Robot Intelligence Technology and Applications (RiTA).
  15. Constrained Optimization Formulation of Bellman Optimality Equation for Online Reinforcement Learning
    Hyochan Lee, Kyunghwan Choi *
    International Conference on Robot Intelligence Technology and Applications (RiTA) (accepted, in press), 2025 [πŸ“ƒ Full-Text]
  16. Using Deep Reinforcement Learning for Dynamic Gain Adjustment of a Disturbance Observer
    Hyochan Lee, Kyunghwan Choi *, Wooyong Kim*
    International Conference on Control, Automation and Systems (ICCAS) , pp. 1273-1278, 2025 [🌐 Online]
  17. Physics-Informed Online Learning of Flux Linkage Model for Synchronous Machine
    Seunghun Jang, Myeongseok Ryu, Kyunghwan Choi *
    Annual Conference of the IEEE Industrial Electronics Society (IECON) , pp. 1-7, 2025 [🌐 Online] [πŸ“ƒ Full-Text] [πŸ’Ύ Cite] [GitHub logo Code]
  18. Online Actor Critic Learning for Optimal Tracking in Servo Positioning Systems
    Hyochan Lee, Kyunghwan Choi *
    Annual Conference of the IEEE Industrial Electronics Society (IECON) , pp. 1-7, 2025 [🌐 Online] [πŸ“ƒ Full-Text]
  19. LMI-based Neural Network Observer for State and Nonlinearity Estimation
    Yeongho Jeong, Kyunghwan Choi *
    Annual Conference of the IEEE Industrial Electronics Society (IECON) , pp. 1-7, 2025 [🌐 Online] [πŸ“ƒ Full-Text]
  20. Constrained Optimization-Based Neuro-Adaptive Control (CONAC) for Synchronous Machine Drives Under Voltage Constraints
    Myeongseok Ryu, Niklas Monzen, Pascal Seitter, Kyunghwan Choi , Christoph M. Hackl*
    Annual Conference of the IEEE Industrial Electronics Society (IECON) , pp. 1-7, 2025 [🌐 Online] [πŸ“ƒ Full-Text] [πŸ’Ύ Cite] [GitHub logo Code]
  21. Imposing a Weight Norm Constraint for Neuro-Adaptive Control
    Myeongseok Ryu, Jiyun Kim, Kyunghwan Choi *
    European Control Conference (ECC) , pp. 380-385, 2025 [🌐 Online] [πŸ“ƒ Full-Text] [πŸŽ₯ Presentation] [πŸ’Ύ Cite] [GitHub logo Code]

    22. 2024
  22. Neural Network-based Nonlinearity Estimation of Voltage Source Inverter for Synchronous Machine Drives
    Yeongho Jeong, Seunghun Jang, Kyunghwan Choi *
    IEEE International Symposium on Industrial Electronics (ISIE) , pp. 1-5, 2024 [🌐 Online] [GitHub logo Code]
  23. Extended State Observer Based Stator Flux Linkage Estimation of Nonlinear Synchronous Machines
    Seunghun Jang, Bernd Pfeifer, Christoph M. Hackl, Kyunghwan Choi *
    IEEE International Symposium on Industrial Electronics (ISIE) , pp. 1-5, 2024 [🌐 Online] [πŸ“ƒ Full-Text] [GitHub logo Code]
  24. Stack Degradation Protection of FCEVs via Predictive Energy Management Strategy with Segmented Roads
    Geunyoung Park, Kyunghwan Choi , Dongsuk Kum*
    American Control Conference (ACC) , pp. 3643-3649, 2024 [🌐 Online]

    25. 2023
  25. Reinforcement Learning-Based Collision Avoidance of a Connected and Automated Vehicle at Merging Roads
    Minseok Seo, Seongjae Shin, Kyungjoong Kim, Kyunghwan Choi *
    International Workshop on Intelligent Systems (IWIS) , pp. 1-5, 2023 [🌐 Online]
  26. A Comparative Study of Reinforcement Learning and Analytical Methods for Optimal Control
    Myeongseok Ryu, Junseo Ha, Minji Kim, Kyunghwan Choi *
    International Workshop on Intelligent Systems (IWIS) , pp. 1-5, 2023 [🌐 Online] [πŸ’Ύ Cite]
  27. Model Predictive Torque Control of Synchronous Machines Without a Current or Stator Flux Reference Generator
    Kyunghwan Choi , Ki-Bum Park*
    IEEE International Symposium on Industrial Electronics (ISIE) , pp. 1-6, 2023 [🌐 Online]
  28. Performance Comparison of Long-Horizon FCS-MPC for IPMSM Considering THDi and Inverter Loss
    Jonghwan Kim, Youngseok Lee, Kyunghwan Choi , Jiho Song, Kinum Kim*
    International Conference on Power Electronics and ECCE Asia (ICPE - ECCE Asia) (accepted, in press), pp. 1680-1685, 2023 [🌐 Online]
  29. Stator Flux Linkage Estimation of Synchronous Machines Based on Integration Error Estimation for Improved Transient Performance
    Seunghun Jang, Kyunghwan Choi *
    IEEE Conference on Decision and Control (CDC) , pp. 4197-4202, 2023 [🌐 Online] [πŸ“ƒ Full-Text] [GitHub logo Code]

    30. 2022
  30. A Comparison of DPWM and Inverter Loss Energy Based FCS-MPC for IPMSM
    Jongseok Kim, Jiho Song, Kyunghwan Choi *, Ki-Bum Park*
    IEEE International Power Electronics and Motion Control Conference (PEMC) , pp. 943-948, 2022 [🌐 Online]

    31. 2020
  31. Proportional-Type Current Control of Permanent Magnet Synchronous Motor with Improved Transient Performance over a Wide Speed Range
    Kyunghwan Choi , Yonghun Kim, Seok-Kyoon Kim*, Kyung-Soo Kim*
    International Conference on Control, Automation and Systems (ICCAS) , pp. 60-63, 2020 [🌐 Online]

    32. 2019
  32. A Fast and Accurate Numerical Method for Optimal Torque Control of Interior Permanent Magnet Synchronous Motors
    Kyunghwan Choi , Yonghun Kim, Seok-Kyoon Kim*, Kyung-Soo Kim*
    International Conference on Control, Automation and Systems (ICCAS) , pp. 12-16, 2019 [🌐 Online]

    33. 2016
  33. Two-Channel Electrotactile Stimulation for Sensory Feedback of Fingers of Prosthesis
    Kyunghwan Choi , Pyungkang Kim, Kyung-Soo Kim*, Soohyun Kim
    IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) , pp. 1133-1138, 2016 [🌐 Online]

Domestic Journal Papers


    2024
  1. Current Status and Future Trends in Synchronous Machine Control Technologies: A Focus on Torque Control
    동기전동기 μ œμ–΄κΈ°μˆ  동ν–₯ 및 λ°œμ „λ°©ν–₯: ν† ν¬μ œμ–΄λ₯Ό μ€‘μ‹¬μœΌλ‘œ
    Kyunghwan Choi , Kyung-Soo Kim*
    Journal of Institute of Control, Robotics and Systems , vol. 30, no. 4, pp. 479-491, 2024 [🌐 Online]
  2. A Current-sensor Error Compensation Algorithm for Battery Management Systems Based on Sigma-point Kalman Filter
    μ‹œκ·Έλ§ˆβ€“ν¬μΈνŠΈ 칼만 ν•„ν„°λ₯Ό μ‚¬μš©ν•œ 배터리 관리 μ‹œμŠ€ν…œμ˜ μ „λ₯˜ μ„Όμ„œ 였차 보상 μ•Œκ³ λ¦¬μ¦˜
    Kunwoo Na, Youngkook Kim, Kyunghwan Choi , Wooyong Kim*
    Journal of Institute of Control, Robotics and Systems , vol. 30, no. 10, pp. 1131-1138, 2024 [🌐 Online]

    3. 2023
  3. A Current Sensor Fault-detecting Method for Electric Vehicle Battery Systems Based on Disturbance Observer
    μ™Έλž€ κ΄€μΈ‘κΈ°λ₯Ό μ‚¬μš©ν•œ μ „κΈ°μ°¨ 배터리 μ‹œμŠ€ν…œμ˜ μ „λ₯˜ μ„Όμ„œ κ³ μž₯ 감지 방법
    Kunwoo Na, Kyunghwan Choi , Wooyong Kim*
    Journal of Institute of Control, Robotics and Systems , vol. 29, no. 12, pp. 1052-1059, 2023 [🌐 Online]

    4. 2022
  4. Speed Tracking for Servo Systems via Active Pole-Zero Cancellation Stabilization Technique
    μ„œλ³΄ μ‹œμŠ€ν…œ μ‘μš©μ„ μœ„ν•œ λŠ₯λ™ν˜• 영-극점 상쇄 속도 μΆ”μ’… 기술
    Hyochan Lee, Youngseok Lee, Kyunghwan Choi , Seokkyoon Kim*
    Journal of Institute of Control, Robotics and Systems , vol. 28, no. 11, pp. 1045-1051, 2022 [🌐 Online]
  5. Current Status and Future Trends of Electrified Powertrain Technologies
    전동화 νŒŒμ›ŒνŠΈλ ˆμΈ 기술 동ν–₯ 및 λ°œμ „ λ°©ν–₯: μ•„ν‚€ν…μ²˜μ™€ μ œμ–΄μ „λž΅μ„ μ€‘μ‹¬μœΌλ‘œ
    Kyunghwan Choi , Dongsuk Kum*
    Mobility Research , vol. 2, no. 1, pp. 23-42, 2022 [🌐 Online]

Domestic Conference Papers


    2026
  1. State-Error-Based Online Learning of Control-Oriented Tire Force Models Using Grid Memory
    μ œμ–΄ 지ν–₯ 타이어 횑λ ₯ λͺ¨λΈμ˜ κ·Έλ¦¬λ“œ λ©”λͺ¨λ¦¬λ₯Ό μ΄μš©ν•œ μƒνƒœ 였차 기반 온라인 ν•™μŠ΅
    Donghwa Hong, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  2. Online learning-based linear model predictive control approximation
    온라인 ν•™μŠ΅ 기반 μ„ ν˜• λͺ¨λΈ 예츑 μ œμ–΄ 근사
    Changeun Park, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  3. End-to-End Online LSTM Control for Robust 4WS Path Tracking under Combined Disturbances
    볡합 μ™Έλž€ ν•˜μ—μ„œ κ°•μΈν•œ 4WS 경둜 좔쒅을 μœ„ν•œ μ—”λ“œνˆ¬μ—”λ“œ 온라인 LSTM μ œμ–΄
    Naol Samuel Erega, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  4. Constrained Optimization-Based Performance Improvement Analysis of Vehicle Lateral Control Using All-Wheel Steering
    사λ₯œ μ‘°ν–₯ μ‹œμŠ€ν…œμ„ ν†΅ν•œ 횑 μ°¨λŸ‰ 거동 ν–₯μƒμ˜ μ œμ•½ μ΅œμ ν™” 기반 뢄석
    Myeongseok Ryu, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  5. Constrained Optimization Formulation of Bellman Optimality Equation for Online Reinforcement Learning
    온라인 κ°•ν™”ν•™μŠ΅μ„ μœ„ν•œ 벨만 졜적 λ°©μ •μ‹μ˜ μ œμ•½ μ΅œμ ν™” 문제
    Hyochan Lee, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  6. Concurrent Learning-Based Adaptive Online Identification of Battery Thermal Dynamics
    λ™μ‹œν•™μŠ΅ 기반 배터리 열동역학 온라인 μž”μ°¨ ν•™μŠ΅
    Seunghun Jang, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  7. LLM-driven Semantic Guidance for Enhancing Reinforcement Learning-based Autonomous Driving through Reward Engineering
    κ°•ν™”ν•™μŠ΅ 기반 μžμœ¨μ£Όν–‰ μ„±λŠ₯ ν–₯상을 μœ„ν•œ 보상 섀계 기반 LLM 주도 의미적 κ°€μ΄λ˜μŠ€
    Ahmad Mouri Zadeh Khaki, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
  8. CARE Planner : Constrained Attention and Risk-aware Planning for Imitation-based Autonomous Driving
    CARE Planner : λͺ¨λ°©ν•™μŠ΅ 기반 μžμœ¨μ£Όν–‰μ„ μœ„ν•œ μ œμ•½ μ–΄ν…μ…˜ 및 μœ„ν—˜ 인지 ν”Œλž˜λ‹
    Jiyun Kim, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) (accepted, in press), 2026 [πŸ“ƒ Full-Text]
      πŸ“„ Awarded Best Paper Award at the 2026 Institute of Control, Robotics and Systems (ICROS) Conference.

    9. 2025
  9. Online Reinforcement Learning for Optimal Tracking in Servo Positioning Systems
    온라인 κ°•ν™”ν•™μŠ΅ 기반 μ„œλ³΄ μ‹œμŠ€ν…œμ˜ 졜적 각도 μΆ”μ’… μ œμ–΄
    Hyochan Lee, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , 2025 [πŸ“ƒ Full-Text]
  10. CAR Planner: Constrained-Attention-Based Robust Imitation Learning for Autonomous Driving
    CAR Planner: μ œμ•½ μ–΄ν…μ…˜ 기반 강건 λͺ¨λ°©ν•™μŠ΅ ν”Œλž˜λ„ˆ
    Jiyun Kim, Kyunghwan Choi *
    ν•œκ΅­μžλ™μ°¨κ³΅ν•™νšŒ μΆ”κ³„ν•™μˆ λŒ€νšŒ (KSAE) (accepted, in press), 2025 [πŸ“ƒ Full-Text]
  11. Cooperative Merging in Mixed Traffic Based on Strategic Influence of Connected Automated Vehicles on Human-Driven Vehicle Behavior
    ν˜Όν•© ꡐ톡 ν™˜κ²½μ—μ„œ CAV의 μ „λž΅μ  κ°œμž…μ„ ν†΅ν•œ ν˜‘λ ₯적 ν•©λ₯˜ μ œμ–΄
    Minseok Seo, Kyunghwan Choi *
    ν•œκ΅­μžλ™μ°¨κ³΅ν•™νšŒ μΆ”κ³„ν•™μˆ λŒ€νšŒ (KSAE) , 2025 [πŸ“ƒ Full-Text]
  12. Physics-Informed Online Learning for Stator Flux Linkage Estimation in Synchronous Machines
    λ™κΈ°μ „λ™κΈ°μ˜ μ‹€μ‹œκ°„ κ³ μ •μž μ‡„κ΅μžμ† 좔정을 μœ„ν•œ λ¬Όλ¦¬μ •λ³΄κΈ°λ°˜ ν•™μŠ΅
    Seunghun Jang, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , 2025 [πŸ“ƒ Full-Text]
  13. State-wise Safety in Autonomous Driving via Lagrangian-based Constrained Reinforcement Learning
    λΌκ·Έλž‘μ§€μ•ˆ 기반 μ œμ•½ κ°•ν™” ν•™μŠ΅μ„ ν†΅ν•œ μžμœ¨μ£Όν–‰ μ‹œμŠ€ν…œμ˜ μƒνƒœλ³„ μ•ˆμ •μ„± 보μž₯
    Minseok Seo, Kyunghwan Choi *
    ν•œκ΅­μžλ™μ°¨κ³΅ν•™νšŒ μΆ˜κ³„ν•™μˆ λŒ€νšŒ (KSAE) , 2025

    14. 2024
  14. Using Deep Reinforcement Learning for Intelligent Gain Adjustment of a Disturbance Observer
    μ™Έλž€κ΄€μΈ‘κΈ°μ˜ μ‹¬μΈ΅κ°•ν™”ν•™μŠ΅ 기반 지λŠ₯ν˜• μžλ™ 동쑰 기법
    Hyochan Lee, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , pp. 292-293, 2024 [🌐 DBpia Online] [πŸ“ƒ Full-Text]
  15. Stator Flux Linkage Estimation of Nonlinear Synchronous Machines Based on the State Observer
    μƒνƒœ κ΄€μΈ‘κΈ° 기반 λΉ„μ„ ν˜• λ™κΈ°κΈ°μ˜ κ³ μ •μž μ‡„κ΅μžμ† μΆ”μ •
    Seunghun Jang, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , pp. 308-309, 2024 [🌐 DBpia Online] [πŸ“ƒ Full-Text]
  16. Neural Network-based Nonlinearity Estimation of Voltage Source Inverter for Synchronous Machine Drives
    동기전동기 κ΅¬λ™μš© 전압원 μΈλ²„ν„°μ˜ 인곡 신경망 기반 λΉ„μ„ ν˜•μ„± μΆ”μ •
    Yeongho Jeong, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , pp. 312-313, 2024 [🌐 DBpia Online] [πŸ“ƒ Full-Text]
  17. Approximation-based Steering Controller with Deep Neural Network
    심측신경망 κ·Όμ‚¬κΈ°λ°˜ μ‘°ν–₯ μ œμ–΄κΈ°
    Myeongseok Ryu, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , pp. 884-885, 2024 [🌐 DBpia Online] [πŸ“ƒ Full-Text]

    18. 2023
  18. Path Control of a Connected and Automated Vehicle at Intersections and Merging Zones Using Attention Mechanism-Based Reinforcement Learning
    μ–΄ν…μ…˜ λ©”μ»€λ‹ˆμ¦˜ 기반 κ°•ν™”ν•™μŠ΅μ„ ν™œμš©ν•œ ꡐ차둜 및 ν•©λ₯˜ κ΅¬κ°„μ—μ„œμ˜ 컀λ„₯ν‹°λ“œ μžμœ¨μ£Όν–‰μ°¨ 경둜 μ œμ–΄
    Minseok Seo, Kyunghwan Choi *
    ν•œκ΅­μžλ™μ°¨κ³΅ν•™νšŒ μΆ”κ³„ν•™μˆ λŒ€νšŒ (KSAE) , pp. 725, 2023 [🌐 DBpia Online]
  19. Integrated Motion Control of Four in-Wheel Motor Actuated Vehicles Considering Path Tracking, Ride Comfort, and Energy Efficiency
    경둜 μΆ”μ’…, 동적 승차감, 그리고 μ—λ„ˆμ§€ νš¨μœ¨μ„ κ³ λ €ν•œ μ „λ₯œ 인휠λͺ¨ν„° μžλ™μ°¨μ˜ 톡합 μš΄λ™ μ œμ–΄
    Myeongseok Ryu, Kyunghwan Choi *
    ν•œκ΅­μžλ™μ°¨κ³΅ν•™νšŒ μΆ”κ³„ν•™μˆ λŒ€νšŒ (KSAE) , pp. 490, 2023 [🌐 DBpia Online]
  20. Sator Flux Linkage Estimation Method of Synchronous Machines Based on Integration Error Estimation
    적뢄 였차 μΆ”μ • 기반 동기 μ „λ™κΈ°μ˜ 쇄ꡐ μžμ† μΆ”μ • 기법
    Seunghun Jang, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , pp. 177-178, 2023 [🌐 DBpia Online] [πŸ“ƒ Full-Text]
  21. Data-driven Modeling of Model Residuals for Linear Model Predictive Control of Nonlinear Systems
    λΉ„μ„ ν˜• μ‹œμŠ€ν…œμ˜ μ„ ν˜•λͺ¨λΈμ˜ˆμΈ‘μ œμ–΄λ₯Ό μœ„ν•œ 데이터 기반 μ‹œμŠ€ν…œ μž”μ°¨ λͺ¨λΈλ§
    Myeongseok Ryu, Kyunghwan Choi *
    μ œμ–΄λ‘œλ΄‡μ‹œμŠ€ν…œν•™νšŒ (ICROS) , pp. 837-838, 2023 [🌐 DBpia Online] [πŸ“ƒ Full-Text]
      πŸ“„ Awarded Best Paper Award at the 2023 Institute of Control, Robotics and Systems (ICROS) Conference.

Master's Theses


    2026
  1. Robust Imitation Learning with Attention Constraints and Risk Awareness for Motion Planning in Autonomous Driving
    Jiyun Kim, Kyunghwan Choi *
    Gwangju Institute of Science and Technology (GIST) Library, 2026 [πŸ“ƒ Full-Text]
  2. Integral Error-Based Adaptive Neural Identifier for a Class of Uncertain Nonlinear Systems
    Donghwa Hong, Kyunghwan Choi *
    Gwangju Institute of Science and Technology (GIST) Library, 2026 [πŸ“ƒ Full-Text]

    3. 2025
  3. State-wise Safety in Autonomous Driving via Lagrangian-based Constrained Reinforcement Learning
    Minseok Seo, Kyunghwan Choi *
    Gwangju Institute of Science and Technology (GIST) Library, 2025 [πŸ“ƒ Full-Text]
  4. Constrained Optimization-Based Neuro-Adaptive Control (CoNAC) for Euler-Lagrange Systems
    Myeongseok Ryu, Kyunghwan Choi *
    Gwangju Institute of Science and Technology (GIST) Library, 2025 [πŸ“ƒ Full-Text]

    5. 2024
  5. Online Stator Flux Linkage Estimation of Synchronous Machines
    Seunghun Jang, Kyunghwan Choi *
    Gwangju Institute of Science and Technology (GIST) Library, 2024 [πŸ“ƒ Full-Text]

Preprints


    2025
  1. CAR Planner: Constrained-Attention-Based Robust Imitation Learning for Autonomous Driving
    Jiyun Kim, Kyunghwan Choi *
    Techrxiv, 2025 [🌐 Preprint Online] [πŸ“ƒ Preprint Full-Text]

    2. 2024
  2. CNN-based End-to-End Adaptive Controller with Stability Guarantees
    Myeongseok Ryu, Kyunghwan Choi *
    Arxiv, 2024 [🌐 Preprint Online] [πŸ“ƒ Preprint Full-Text]
  3. A Lyapunov-Based Approach to Nonlinear Programming and Its Application to Nonlinear Model Predictive Torque Control
    Kyunghwan Choi , Christoph M. Hackl*
    Techrxiv, 2024 [🌐 Preprint Online] [πŸ“ƒ Preprint Full-Text]