Kazuo Uzuka

Tokyo Ohka Kogyo (Japan), Okayama University

Papers

Total Citations

H-Index

About

Kazuo Uzuka is a robotics engineer whose work centers on novel actuation systems for robots, particularly direct-drive stepping motors designed for hazardous or high-torque applications. His major contribution is the invention of the "nutation motor," a family of stepping motors that achieve high-resolution positioning without relying on electrical sensors or complex servo mechanisms. Uzuka’s 2003 paper on the pneumatic nutation motor (20 citations) introduced a design capable of 720 steps per rotation, making it ideal for explosive or otherwise dangerous environments. He later extended this concept to an electric variant (2004, 5 citations), using finite element magnetic field analysis to optimize torque. His 2005 synthesis paper (3 citations) unified these prototypes, demonstrating a compact, high-torque, high-resolution direct-drive system that uses a bevel-gear reduction mechanism. Though his citation counts are modest, Uzuka’s work is notable for its elegant mechanical simplicity and its potential to replace conventional electromagnetic servos in specialized robotics. His research offers a compelling alternative for engineers seeking robust, sensorless motion control in extreme conditions.