Masafumi Naito

Title: Masafumi Naito: Innovator in Ultrasonic Motor Technology

Introduction

Masafumi Naito is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of ultrasonic motor technology, holding a total of 3 patents. His innovative approaches have paved the way for advancements in motor efficiency and performance.

Latest Patents

Naito's latest patents include a circuit and method for driving an ultrasonic motor. This invention provides a method for driving the motor by initially setting the drive frequency higher than the resonant frequency. The target drive frequency is then set lower than the resonant frequency. A drive signal is applied to a piezoelectric element on the stator to rotate the rotor. The frequency of the drive signals is swept from the start frequency to the target frequency. Abnormal vibrations during this process are detected by a monitor electrode, allowing for adjustments to maintain optimal performance. Another notable patent is an improved driving circuit for an ultrasonic motor, which gradually alters the driving signal in response to input control signals, enabling smooth changes in rotational speed.

Career Highlights

Masafumi Naito works at Asmo Co., Ltd., where he continues to develop innovative solutions in motor technology. His work has been instrumental in enhancing the functionality and reliability of ultrasonic motors.

Collaborations

Naito collaborates with talented individuals such as Yoshihiro Adachi and Hironobu Kawai, contributing to a dynamic and innovative work environment.

Conclusion

Masafumi Naito's contributions to ultrasonic motor technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of motor dynamics and a commitment to improving performance.