Nobumasa Usiro

Title: Nobumasa Usiro: Innovator in Motor Control Technology

Introduction

Nobumasa Usiro is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of motor control technology, holding two patents that showcase his innovative approach to motor drive systems.

Latest Patents

Usiro's latest patents include a motor control apparatus and a motor control method. The motor control apparatus features a motor drive control section that regulates the motor's operation using a predetermined phase. It also includes a rotation position detecting section that outputs two types of detection signals based on the rotor's position at every 180 degrees of the motor's electrical angle. Additionally, a stopped position estimating section determines the rotor's stopped position at the start of rotation, while a rotational speed estimating section calculates the rotor's speed using elapsed time and the stopped position. The estimated phase calculating section then computes an estimated phase based on the rotational speed.

The second patent, also a motor control apparatus, incorporates a fixed phase setting section that establishes a fixed phase of the motor according to a detection signal. At the rotor's start of rotation, the fixed phase setting section sets a first fixed phase that is equal to or greater than -90 degrees relative to a stable stopping point at the maximum electrical angle and equal to or less than 90 degrees relative to a stable stopping point at the minimum electrical angle. It also sets a second fixed phase under similar conditions.

Career Highlights

Nobumasa Usiro is currently employed at Sinfonia Technology Co., Ltd., where he continues to develop innovative solutions in motor control technology. His work has significantly impacted the efficiency and performance of motor systems.

Collaborations

Usiro collaborates with notable colleagues, including Kazunari Kanazawa and Takeshi Tomizaki, who contribute to the advancement of technology in their respective fields.

Conclusion

Nobumasa Usiro's contributions to motor control technology through his patents reflect his dedication to innovation and excellence. His work at Sinfonia Technology Co., Ltd. continues to influence the industry positively.