Tetsutaro Kouji

Title: Innovations by Tetsutaro Kouji in Ultrasonic Motor Control

Introduction

Tetsutaro Kouji is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of ultrasonic motor control, particularly in surveying instruments. With a total of 2 patents, his work focuses on enhancing the performance and efficiency of ultrasonic motors.

Latest Patents

Kouji's latest patents include a method for controlling an ultrasonic motor and a surveying instrument designed for the same purpose. The first patent provides a method for controlling an ultrasonic motor to reduce deterioration of automatic tracking performance. This invention includes a rotary shaft, an ultrasonic motor that drives the rotary shaft, a tracking unit with a light emitting unit and a light receiving unit, and a clock signal oscillation unit. The method ensures that during low-speed rotation, the ratio of the acceleration period and deceleration period in the drive cycle is optimized, allowing the light emitting unit to function effectively.

The second patent addresses noise reduction during low-speed rotation in a surveying instrument utilizing an ultrasonic motor. This method controls the ratio of the acceleration period in a control cycle and introduces random or regular shifts in the timing of the acceleration period. This innovative approach enhances the overall performance of the ultrasonic motor in practical applications.

Career Highlights

Tetsutaro Kouji is currently employed at Topcon Corporation, a leading company in precision measurement and surveying technology. His work at Topcon has allowed him to apply his innovative ideas in real-world applications, contributing to advancements in the field.

Collaborations

Kouji has collaborated with notable colleagues such as Kaoru Kumagai and Satoshi Yanobe. Their combined expertise has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Tetsutaro Kouji's contributions to ultrasonic motor control demonstrate his commitment to innovation in surveying technology. His patents reflect a deep understanding of the challenges faced in the field and provide effective solutions that enhance performance and efficiency.