Yoshiaki Hachisuka

Title: Yoshiaki Hachisuka: Innovator in DC Motor Control Technology

Introduction

Yoshiaki Hachisuka is a notable inventor based in Hachioji, Japan. He has made significant contributions to the field of electrical engineering, particularly in the area of DC motor control technology. With a total of 2 patents to his name, Hachisuka's work has had a meaningful impact on the industry.

Latest Patents

Hachisuka's latest patents include an "Apparatus for preventing phase control mechanism malfunction" and a "Device for driving a DC motor with feedback control." The first patent addresses the prevention of malfunctions in phase control mechanisms, specifically in thyristor bridges that regulate the rotational speed of DC motors. This apparatus generates thyristor firing pulses based on the intersection of a rising analog speed command signal and sawtooth signals. It ensures that thyristors are not supplied with firing pulses for a time interval equivalent to the thyristor commutation overlap time. The second patent focuses on a device that drives a DC motor with feedback control, incorporating circuits that determine whether the motor is accelerating or decelerating and adjusting the gain modification signal accordingly.

Career Highlights

Throughout his career, Hachisuka has worked with prominent companies such as Fanuc Corporation and Fujitsu Fanuc Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in motor control technology.

Collaborations

Hachisuka has collaborated with various professionals in his field, including his coworker Katsuo Kobari. Their joint efforts have contributed to advancements in the technology surrounding DC motors.

Conclusion

Yoshiaki Hachisuka is a distinguished inventor whose work in DC motor control technology has led to valuable patents and innovations. His contributions continue to influence the industry and inspire future advancements.