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About

Sakiichi Okabe has dedicated his career to advancing the precision and control of robotic systems, with a particular focus on vibration suppression and ultrasonic metrology. His foundational work on mobile robot vehicles introduced the use of dynamic vibration absorbers to minimize body displacement at resonance, a contribution that remains relevant for improving vehicle stability. Okabe is also a pioneer in ultrasonic sensing for robotics; he developed a powerful airborne ultrasonic transmitter using electric spark discharge, which significantly enhanced sound pressure for robot metrology applications. Building on this, he devised a triangulation-based system for measuring the 3-D position and orientation of robots, addressing the growing need for precise performance evaluation. In the realm of manipulator control, Okabe proposed an innovative approach using repeated direct kinematics solutions to bypass complex inverse kinematics calculations, streamlining the translation from working to articulation coordinates. With over 20 citations across his most influential papers, Okabe’s work has laid essential groundwork for vibration control, ultrasonic measurement, and efficient robot control—key areas that continue to shape modern robotics research.