Koji Fujimoto

Title: Koji Fujimoto and Motor Control Innovation.

Introduction

Koji Fujimoto is an inventor associated with Kariya, Japan, and Denso Corporation. His patent work addresses motor control technology used in electric power steering systems.

Latest Patents

Fujimoto is credited with 1 patent: “Motor Control Device and Electric Power Steering Device Provided with Same.” The invention describes a field-weakening controller that determines a d-axis current correction based on a modulation factor related to inverter voltage and power supply voltage. A calculator uses the d-axis current command and its correction to produce a final command value, while a current controller performs feedback control of the d-axis and q-axis current commands. The device also adjusts the final d-axis command based on the q-axis command to suppress the influence of its frequency components within a specified frequency band.

Career Highlights

Fujimoto’s listed patent reflects work on control methods for electric motors and electric power steering. The design coordinates current commands and field-weakening control to manage motor operation.

Collaborations

The patent is associated with Denso Corporation, an automotive technology company. This association connects Fujimoto’s invention with the development of motor control and electric power steering technologies.

Conclusion

Koji Fujimoto’s patent focuses on refining motor control for electric power steering through coordinated current-command adjustment and field-weakening control.