Location History:
- Tokyo, JP (1987 - 1988)
- Kawasaki, JP (1992)
- Kanagawa, JP (1990 - 1995)
Company Filing History:
6 out of 39,237 
3 out of 376 
2 out of 5,207 
Years Active: 1987-1995
Title: Ryuji Iizawa: A Trailblazer in Electric Power Steering Innovations
Introduction
Ryuji Iizawa, based in Kanagawa, Japan, stands out as a prominent inventor in the field of automotive technology. With six patents to his name, Iizawa has made significant strides, particularly in electric power steering systems. His inventive methods and control techniques are paving the way for advancements in vehicle handling and safety.
Latest Patents
Among Iizawa's latest innovations is a patented control method for electric power steering apparatus for vehicles. This control method features a control unit that includes a target value generator along with a primary delay system setting unit. The target value generator is responsible for generating a target steering force or motor output. Notably, the primary delay system accommodates for varying vehicle speeds by setting a damper value to negative in low-speed ranges. This value is also calculated using the steering angular speed of the electric power steering unit, which enhances the steering response.
In addition, Iizawa has developed a clutch control method and related clutch controller for motor-driven power steering apparatuses. This innovative method disconnects the clutch under specific conditions detected by steering angle and torque sensors. His design employs a unique arrangement of transistors and a current sensor to ensure efficient operation of the motor-driven power steering system.
Career Highlights
Ryuji Iizawa’s career includes pivotal roles at esteemed companies such as Fujitsu Corporation and Jidosha Kiki Co., Ltd. His time at these organizations has greatly influenced his inventive capabilities and contributed to his understanding of automotive technologies.
Collaborations
Throughout his career, Iizawa has collaborated with fellow experts in the field, including Masaki Watanabe and Yoshiaki Taniguchi. Their joint efforts have likely fostered innovation and created opportunities for advancing electrical systems in the automotive industry.
Conclusion
Ryuji Iizawa's contributions to electric power steering technology exemplify the spirit of innovation in the automotive sector. With a growing portfolio of patents, he continues to enhance vehicle performance and safety through his inventive methods. Iizawa remains an influential figure in his field, setting a precedent for future advancements in automotive technology.