Yasushi Otsuka

Title: Yasushi Otsuka: Innovator in Electric Motor Control and Strain Measurement

Introduction

Yasushi Otsuka is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of electric motor control and strain measurement. With a total of 2 patents, his work showcases innovative solutions that enhance the functionality and efficiency of various technologies.

Latest Patents

One of Yasushi Otsuka's latest patents is an electric motor control device. This device can accurately calculate the rotating speed of an electric motor. It includes a speed calculating unit that receives a position detection signal from a position detector, which detects the rotational position of the motor. The device also incorporates a time detector that outputs a position change time signal, allowing for precise calculations of the motor's speed. Additionally, a speed correcting unit is included to address periodic speed errors based on the motor's rotational position.

Another significant patent is a strain or stress gauge designed for measuring the stress of structures or members. This gauge comprises a bundle of electric conductive fibers and a pair of terminals for measuring the electric resistance of the fibers. The design is simple and cost-effective, allowing for flexibility in size. This gauge not only provides real-time data on strain or stress but also tracks the history of stress in a structure, thanks to its unique stress/strain relationship characteristics.

Career Highlights

Yasushi Otsuka has worked with prominent companies, including Shimizu Construction Co., Ltd. His experience in the industry has allowed him to develop practical solutions that address real-world challenges in engineering and construction.

Collaborations

Throughout his career, Yasushi has collaborated with notable individuals such as Hiroaki Yanagida and Masaru Miyayama. These partnerships have contributed to the advancement of his innovative projects and patents.

Conclusion

Yasushi Otsuka's contributions to electric motor control and strain measurement reflect his dedication to innovation and engineering excellence. His patents demonstrate a commitment to developing practical solutions that enhance technology and improve structural integrity.