Yoshimitsu Onoda

Title: Innovations of Yoshimitsu Onoda

Introduction

Yoshimitsu Onoda is a notable inventor based in Toride, Japan. He has made significant contributions to the field of engineering, particularly in the development of control systems for motors and elevators. With a total of five patents to his name, Onoda's work reflects a commitment to advancing technology and improving safety in various applications.

Latest Patents

One of Onoda's latest patents is a controlling method and device for a permanent magnet synchronous motor. This invention features a controlling device that utilizes a permanent magnet as a rotor, incorporating three-phase armature windings. It includes a detecting means for identifying the rotational position and angle of the rotor, a comparison means for assessing the rotational speed against a predetermined reference speed, and a converting means for determining the necessary currents for the armature windings. Additionally, a current controlling means regulates the current flows through the individual armature windings based on the values obtained from the converting means.

Another significant patent is an emergency control system for elevators. This system is designed to produce a signal in response to minor vibrations in the structure housing the elevator. It features a first circuit that controls the elevator's operation under a specific mode for a predetermined time interval. Simultaneously, a second circuit disables the signal-producing circuit while enabling it for a longer second time interval.

Career Highlights

Yoshimitsu Onoda has worked with prominent companies such as Hitachi, Ltd. and Hitachi Elevator Engineering & Service Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in elevator technology and motor control systems.

Collaborations

Onoda has collaborated with notable coworkers, including Hisakatsu Kiwaki and Takato Yamakoshi. Their combined expertise has likely fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Yoshimitsu Onoda's contributions to engineering through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence the development of safer and more efficient technologies.