Hiroshi Kuroyanagi

Title: Hiroshi Kuroyanagi: Innovator in Steering Technology

Introduction

Hiroshi Kuroyanagi is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of steering technology, holding a total of 5 patents. His work focuses on enhancing vehicle steering systems, particularly through innovative approaches to steer-by-wire technology.

Latest Patents

One of Kuroyanagi's latest patents is the steer-by-wire system. In this system, a first steering reaction force made-up value (Hc) is determined based on a road reaction force (W). Additionally, a second steering reaction force made-up value (Hc) is derived from the steering position (X) of the steering handle or steerable wheels. A steering reaction force command value (H) is generated from both of these values, with their weightings adjusted by respective weighting gains (G, G). The ratio of these weighting gains is altered depending on the state of the road surface, allowing for a steer-by-wire system that can adjust the steering reaction force to be sensitive or insensitive to road conditions.

Another notable invention is the vehicle steering control apparatus. This apparatus is designed to maintain consistent operating characteristics, regardless of whether conditions are normal or impaired. It includes multiple motors for driving a steered wheel and several ECUs, each linked to one of the motors. When operating normally, a torque command representing the torque needed to turn the steered wheel is generated and divided according to the number of motors. Each ECU controls its associated motor based on the corresponding distributed torque.

Career Highlights

Kuroyanagi has worked with notable companies in the automotive industry, including Toyoda Koki and Jtekt Corporation. His experience in these organizations has contributed to his expertise in steering technologies and innovations.

Collaborations

Throughout his career, Kuroyanagi has collaborated with esteemed colleagues such as Shoji Asai and Toshihiro Takahashi. These partnerships have fostered a creative environment that has led to significant advancements in steering systems.

Conclusion

Hiroshi Kuroyanagi's contributions to steering technology through his innovative patents and collaborations highlight his role as a key figure in the automotive industry. His work continues to influence the development of advanced steering systems, ensuring safer and more responsive vehicle control.