Jihyoung Cha

Vaughn College of Aeronautics and Technology

Papers

Total Citations

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About

Jihyoung Cha is a researcher specializing in the modeling, simulation, and control of electro-mechanical actuators (EMA), with a particular focus on aerospace applications. Their major contribution lies in addressing the critical challenge of backlash dynamics in worm-wheel systems—a key component in EMA that affects precision and reliability. By developing sophisticated models and employing Kalman filters for gap size estimation, Cha has advanced the ability to monitor and mitigate mechanical play, enabling quieter, more eco-friendly, and maintenance-reduced actuator performance. This work supports the ongoing industry shift from hydraulic to electro-mechanical systems, promising significant reductions in weight, size, and operational costs. While their most-cited paper has garnered early attention with 1 citation, its foundational approach to backlash estimation holds potential for broad impact in aerospace and beyond. Cha’s research is instrumental in pushing the boundaries of actuator technology, making EMA more viable for critical applications where precision and durability are paramount.