Ph.D.

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Thesis title

Spherical Brushless Direct Current Motor : Modeling, Magnetostatic Analysis, and Control

(Outstanding Paper Award from the Department of Mechanical Engineering, UNIST)

Educational Qualifications

Sep. 2016 ~ Feb. 2024: Ph. D. in Department of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea

Mar. 2012 ~ Aug. 2016 : B.S. in Mechanical, Aerospace and Nuclear Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea

Research Interests

Multi-DOFs actuator

Control and system identification

Design and control of mobility systems

Publications

Journal

[J.1] K. Xia, S. Lee, and H. Son*, “Adaptive Control for Multi-rotor UAVs Autonomous Ship Landing with Mission Planning,” Aerospace Science and Technology, 2019 [J.2] S. Lee and H. Son*, “Anti-Sway Control of a Multirotor with Cable-Suspended Payload,” IEEE Trans. Control Sys. Technol., 2020 [J.3] S. Lee, W. Chung, and H. Son*, “Online parameter identification framework for a multirotor UAV: Application to an arm stretchable morphing multirotor,” Mech. Syst. Signal Process, 2022 [J.4] J. Jeon, C. S. Park, S. Lee, H. Y. Chae, J. J. Kim* and H. Son*, “Magnetic Induction Tomography Using Multi-Channel Phase-Domain Transceiver for Structural Health Monitoring”, IEEE Trans. Instrum. Meas, 2022 [J.5] S. Lee, H. Kim, and H. Son*, “Moment method based distributed multipoles for modeling magnetic materials in 2D and 3D magnetostatics, ”  Comput. Methods Appl. Mech. Eng, 2022 [J.6] K. Xia, M. Shin, W. Chung, M. Kim, S. Lee, and H. Son*, “Landing a Quadrotor UAV on a Moving Platform with Sway Motion Using Robust Control,” Control Engineering Practice. [J.7] S. Lee and H. Son*, “ A six steps commutation torque and dynamic characteristics of a spherical brushless direct current motor,” accepted, IEEE Trans. Ind. Electron.

Conference

[C.1] M. Kim, S. Lee, and H. Son, “Effects of time delay on long range formation control for unmanned aerial vehicles,” Int. Conf. Ubiquitous Robots and Ambient Intelligence (URAI), 2016 [C.2] S. Lee, D. K. Giri, and H. Son, “Modeling and control of quadrotor UAV subject to variations in center of gravity and mass,” Int. Conf. Ubiquitous Robots and Ambient Intelligence (URAI), 2017 [C.3] S. Lee and H. Son, “System identification of multi-copter UAV using biased-relay input and adaptive extended Kalman filter,” Asia-Pacific International Symposium on Aerospace Technology(APISAT), 2019

[C.4] S. Lee and H. Son “Torque model and drive method for developing closed-loop orientation control of spherical brushless direct current motor*”, IEEE Int. Conf. Advanced Intelligent Mechatronics (AIM),* 2023

Patent

[P.1] 틸팅 제어와 스피닝 제어가 동시에 가능한 외전형 BLDC 전동기 (출원)

Award

[A.1] Commendation from the Minister of Science, ICT and Future Planning for demonstration of drone swarm flight at 2015 Creative Economy Fair

[A.2] Korean I-Corps Program Certificate from Ministry of Science and ICT, for feasibility study of public technology to market

[A.3] Outstanding Paper Award from the Department of Mechanical Engineering, UNIST

Current

Postdoctoral researcher in UNIST 2024.03 ~ 2025.02