Hirofumi Kita

Title: Hirofumi Kita: Innovator in Motor Control Technology

Introduction

Hirofumi Kita is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of motor control technology, holding 2 patents that showcase his innovative approach to engineering challenges.

Latest Patents

Kita's latest patents include a motor operation controller and an insulation type bidirectional DC voltage converter. The motor operation controller is designed to accommodate different power supply voltages by changing a minimum circuit configuration using common motors and wiring. It features an insulation structure between the input power supply and the motors, enabling bidirectional operation in both power and regeneration modes. This controller comprises a converter section and an inverter section for supplying power to a motor. The converter section includes an insulation type bidirectional DC voltage conversion function, which is essential for efficient motor operation.

Another significant invention is the spindle drive system of a machine tool. This system allows for a control mode changeover section that selects between a speed control mode and a position control mode. The speed control mode manages the rotational speed of the spindle through negative feedback, while the position control mode controls the rotational position of the spindle. The system also features a gain changeover section that adjusts the speed loop and position loop gains, enhancing performance during cutting operations compared to non-cutting rapid feed operations.

Career Highlights

Hirofumi Kita is associated with Mitsubishi Electric Corporation, where he has been able to apply his expertise in motor control technology. His work has contributed to advancements in various applications, particularly in the manufacturing sector.

Collaborations

Kita has collaborated with notable colleagues such as Toshiyuki Kaitani and Masahiro Kimata. Their combined efforts have led to innovative solutions in motor control and related technologies.

Conclusion

Hirofumi Kita's contributions to motor control technology through his patents reflect his dedication to innovation and engineering excellence. His work continues to influence the field and inspire future advancements.