Dongho Oh

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About

Dongho Oh is a researcher specializing in electromechanical systems and actuator design, with a particular focus on miniaturized robotic applications. His key research areas include voice coil motor (VCM) actuators, moving-magnet mechanisms, and compact mobile robot locomotion systems. Oh’s most notable contribution is the development of a novel rotating moving-magnet-type VCM actuator for miniaturized mobile robots, published in 2013. This work introduced a remarkably simple structure composed of just one magnet, one coil, and one yoke, enabling efficient electromagnetic force generation in a compact form factor. By employing linearized theoretical modeling to predict performance and finite element analysis to calculate motor constants and restoring force coefficients, Oh demonstrated rigorous analytical depth. His experimental validation confirmed a resonant frequency of 60 Hz and a frequency bandwidth of 80 Hz, with static operation achievable at just 1.5V input. While the paper has accumulated 4 citations, its significance lies in providing a foundational design methodology for small-scale electromagnetic actuators. Oh’s work offers valuable insights for researchers developing next-generation micro-robots requiring precise, low-power actuation, and his systematic approach to modeling and validation serves as a reference for actuator design in constrained environments.