Location History:
- Toyota, JP (2015)
- Susono, JP (2020)
Company Filing History:
Years Active: 2015-2020
Title: Hirokazu Yabumoto: Innovator in Vehicle Control Technology
Introduction
Hirokazu Yabumoto is a notable inventor based in Susono, Japan. He has made significant contributions to the field of vehicle technology, particularly in the area of vehicle attitude control. With a total of 2 patents to his name, Yabumoto's work has the potential to enhance vehicle performance and safety.
Latest Patents
Yabumoto's latest patents include a vehicle attitude control device and an innovative vehicle design. The vehicle attitude control device features a controller that utilizes a low-pass filter to calculate a manipulated variable for the actuator, effectively suppressing the roll of the vehicle. This controller processes roll angle acceleration, integrating it to convert into a roll angle velocity, which is then used to adjust the vehicle's dynamics. The design ensures that the cutoff frequency of the low-pass filter increases with vehicle speed, aligning the peak frequency in roll vibration with a local minimum roll frequency in wheelbase filtering.
In addition, his vehicle design involves adjusting the spring constants of suspension springs and the shared load on wheels. This adjustment allows for different sprung resonance frequencies for the front and rear wheels. The design incorporates shock absorbers with damping coefficient modification mechanisms, enhancing both steering stability and ride quality at a comparatively low cost.
Career Highlights
Yabumoto is currently employed at Toyota Jidosha Kabushiki Kaisha, a leading automotive manufacturer. His work at Toyota has allowed him to apply his innovative ideas in a practical setting, contributing to the company's reputation for quality and performance in vehicle manufacturing.
Collaborations
Throughout his career, Yabumoto has collaborated with talented coworkers such as Daigo Fujii and Shingo Koumura. These collaborations have fostered an environment of innovation and creativity, leading to advancements in vehicle technology.
Conclusion
Hirokazu Yabumoto is a distinguished inventor whose work in vehicle attitude control and design has the potential to revolutionize the automotive industry. His contributions at Toyota and his innovative patents reflect his commitment to enhancing vehicle performance and safety.