Sho Ohno

Title: Innovations of Sho Ohno

Introduction

Sho Ohno is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electric motor control, holding a total of 3 patents. His work primarily focuses on enhancing the efficiency and functionality of electric motors and vehicle control systems.

Latest Patents

One of his latest patents is an electric motor control method and electric motor control device. This control device includes an inverter, a sensor, a controller, and a filter. The inverter supplies power to an electric motor based on control signals. The sensor detects the current supplied from the inverter to the electric motor. The controller executes current vector control by calculating a feedback command value and a feedforward compensation value based on a torque command value. The feedback command value indicates a voltage value for reducing deviation in the supply current to the electric motor, while the feedforward compensation value compensates for the feedback command value. The filter performs a filtering process on the feedback command value to pass a low-frequency component. When the control switches to voltage phase control, the controller initializes this control based on the feedforward compensation value and an output from the filter.

Another significant patent is a vehicle control method and control device. This device is designed for decelerating by regenerative braking of a motor connected to a drive shaft of a drive wheel. It calculates a torque command value to suppress vibration components of the drive shaft by feeding back the torsional angular velocity to a desired torque that determines the motor's power. The control device estimates a dead zone section, where the motor's torque is not transmitted to the drive shaft, based on the desired torque and limits the torque command value when the vehicle is in this dead zone section.

Career Highlights

Sho Ohno is currently employed at Nissan Motor Company Limited, where he continues to innovate in the automotive sector. His work has been instrumental in developing advanced control systems for electric vehicles.

Collaborations

He has collaborated with notable colleagues, including Hiromichi Kawamura and Kengo Fujiwara, contributing to various projects that enhance vehicle performance and efficiency.

Conclusion

Sho Ohno's contributions to electric motor control and vehicle technology demonstrate his commitment to innovation in the automotive industry. His patents reflect a deep understanding of complex systems and a drive to improve vehicle functionality.