Hiroshi Ohtsu

Title: Hiroshi Ohtsu: Innovator in Servo-Systems

Introduction

Hiroshi Ohtsu is a notable inventor based in Musashino, Japan. He has made significant contributions to the field of servo-systems, particularly in self-balancing systems. His innovative work has led to the development of a unique servo-system that utilizes an AC servomotor.

Latest Patents

Hiroshi Ohtsu holds 1 patent for his invention of a servo-system. This system is designed to maintain loop gain substantially constant, regardless of span adjustment, and operates without capacitor coupling. The servo-system includes a direct-coupling DC amplifier that compares input and comparison signals, amplifying the result. It features a servo amplifier with a differential direct-coupling amplifier, which has inverting and non-inverting input terminals. Feedback from the output to the inverting input terminal ensures that the loop gain remains constant, while a switch to the non-inverting input terminal operates at the same frequency as the AC power source for the servomotor. This design allows the system to balance input signals from thermoelectric or resistance thermometers effectively.

Career Highlights

Hiroshi Ohtsu is associated with Yokogawa Electric Works, Ltd., where he has contributed to advancements in servo-system technology. His work has been instrumental in enhancing the performance and reliability of self-balancing systems.

Collaborations

Throughout his career, Hiroshi has collaborated with notable colleagues, including Nobuo Kaieda and Kenji Kawakami. These collaborations have fostered innovation and development in their respective fields.

Conclusion

Hiroshi Ohtsu's contributions to servo-systems exemplify the impact of innovative thinking in technology. His patent reflects a commitment to advancing self-balancing systems, showcasing the importance of collaboration and ingenuity in engineering.