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About

Sung-Ki Lyu is a mechanical engineer whose research spans extreme environments, rehabilitation robotics, and precision mechanical design. His work is particularly notable for advancing robotic systems that aid post-stroke trunk rehabilitation—a critical area for restoring core stability and seated balance in stroke survivors. Lyu’s most cited paper, “Advancement of Mechanical Engineering in Extreme Environments” (2021, 34 citations), demonstrates his foundational contributions to engineering under harsh conditions. In rehabilitation, he has developed novel trunk rehabilitation robots, including a 4-DOF system (2019–2020, up to 16 citations), that systematically evaluate seated balance under varying seat surfaces and visual conditions. These robots uniquely constrain lower extremities to isolate trunk control, providing therapists with objective metrics for patient progress. Lyu’s work also extends to heavy payload robot design with gravity compensators (2019, 6 citations) and cycloid reducers for remote weapons systems (2017), showcasing his versatility. His path planning research using level-set optimization (2018, 6 citations) further highlights his computational approach to robotics. With a career spanning over a decade, Lyu’s integration of mechanical design and clinical rehabilitation needs has produced tangible tools for improving post-stroke recovery, making his research impactful for both engineers and clinicians.