Sang-Deok Lee
Papers
18
Total Citations
83
H-Index
6
About
Sang-Deok Lee is a control systems engineer whose research centers on robotics, disturbance observer (DOB) design, and gyroscopic actuation — with a particular focus on the demanding challenge of single-wheel and sphere robot balancing. Working from Chungnam National University, Lee has made significant contributions to the understanding and control of underactuated robotic systems, pioneering the use of Control Moment Gyros (CMGs) as indirect actuators for balance stabilization. His investigations into gyroscopically induced vibration, parametric oscillation, and stability region analysis have provided practical frameworks for suppressing lateral instabilities in single-wheel platforms. A recurring theme across his work is the application of disturbance observer-based control, with Lee developing systematic approaches to Q filter design and recursive least squares (RLS) methods for real-time inverse model estimation — techniques that bridge theoretical robustness with experimental validation. His research has collectively attracted over 60 citations, with his 2019 paper on real-time inverse model estimation being his most recognized contribution. More recently, Lee has extended his expertise to robot manipulator identification, signaling a broadening research trajectory with strong implications for adaptive and robust control in next-generation robotic systems.
Research Focus
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