Takaji Yasui

Title: Takaji Yasui: Innovator in Servo-Motor Technology

Introduction

Takaji Yasui is a notable inventor based in Nagano, Japan. He has made significant contributions to the field of servo-motor technology, holding three patents that showcase his innovative approach to driving methods.

Latest Patents

Yasui's latest patents include a groundbreaking method for driving a servo-motor. This method detects the power voltage of the servo-motor to determine a detected value. Through numeric calculation, this detected value is utilized to control a voltage command to a power converter, which supplies the appropriate currents to the servo-motor. Notably, this method does not require a feedback loop, resulting in fewer components compared to traditional methods that rely on current sensors and A/D converters. In contrast, the conventional method for driving a servo-motor employs a current feedback loop, which necessitates a current sensor and an A/D converter. This traditional setup often leads to a greater number of parts, making cost reduction challenging and increasing the likelihood of control errors due to inaccuracies in the current sensor's precision. Yasui's innovative approach allows for the current control response of the servo-motor to be freely set by adjusting the time-constant using a calculation system, enhancing efficiency and reliability.

Career Highlights

Takaji Yasui is associated with Tamagawa Seiki Kabushiki Kaisha, a company known for its advancements in precision machinery and control systems. His work at this company has allowed him to focus on developing cutting-edge technologies that improve servo-motor performance.

Collaborations

[This section has been skipped due to space constraints.]

Conclusion

Takaji Yasui's contributions to servo-motor technology reflect his innovative spirit and dedication to improving engineering practices. His patents not only simplify the driving methods of servo-motors but also enhance their efficiency and reliability.