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About

Takehiro Takano is a specialist in advanced actuator systems, with a research focus centered on multidegree-of-freedom (MDOF) ultrasonic motors and their applications in robotics and precision engineering. His most significant contributions lie in the design, development, and optimization of spherical ultrasonic motors (SUSMs) — compact, gearless actuators capable of complex motion across multiple axes using a single stator. This work addresses a critical challenge in robotics: delivering high torque at low speeds without the mechanical complexity of reduction gearing. Takano's 2018 paper on sandwich-type spherical ultrasonic motors employing high-power multimode annular vibrating stators has garnered 24 citations, establishing it as his most influential contribution to the field. His earlier 2016 study on spherical stators for MDOF ultrasonic motors — cited 16 times — further advanced understanding of their structural and performance characteristics. His foundational 2011 work introducing the rotor-embedded-type MDOF-SUSM helped lay the conceptual groundwork for subsequent innovations in compact actuator design. Collectively, Takano's research has meaningfully shaped the development of next-generation actuators for robot joints, multidimensional mechanical systems, and space applications, making his work an essential reference for engineers and researchers working at the intersection of robotics and piezoelectric motor technology.