Patents by Inventor Syoji Ogawa

Syoji Ogawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wheel grip factor estimation apparatus
    Patent number: 6895317
    Abstract: The present invention is directed to a wheel grip factor estimation apparatus, which includes a steering factor detection unit for detecting at least one of steering factors including a steering torque and steering effort applied to a steering system extending from a steering wheel to a suspension of a vehicle, an aligning torque estimation unit for estimating an aligning torque produced on at least a wheel of the vehicle on the basis of the steering factor detected by the steering factor detection unit, and a vehicle state variable detection unit for detecting a state variable of the vehicle. The apparatus further includes a wheel factor estimation unit for estimating at least one of wheel factors including a side force and slip angle applied to the wheel on the basis of the vehicle state variable, and a grip factor estimation unit for estimating a grip factor of at least a tire of the wheel, in accordance with a relationship between the estimated alignment torque and the estimated wheel factor.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: May 17, 2005
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyoda Koki Kabushiki Kaisha, Advics Co., Ltd.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Eiichi Ono, Yuji Muragishi, Katsuhiro Asano, Minekazu Momiyama, Syoji Ogawa, Kenji Asano, Yuzo Imoto, Hiroaki Kato
  • Wheel grip factor estimation apparatus
    Publication number: 20040019417
    Abstract: The present invention is directed to a wheel grip factor estimation apparatus, which includes a steering factor detection unit for detecting at least one of steering factors including a steering torque and steering effort applied to a steering system extending from a steering wheel to a suspension of a vehicle, an aligning torque estimation unit for estimating an aligning torque produced on at least a wheel of the vehicle on the basis of the steering factor detected by the steering factor detection unit, and a vehicle state variable detection unit for detecting a state variable of the vehicle. The apparatus further includes a wheel factor estimation unit for estimating at least one of wheel factors including a side force and slip angle applied to the wheel on the basis of the vehicle state variable, and a grip factor estimation unit for estimating a grip factor of at least a tire of the wheel, in accordance with a relationship between the estimated alignment torque and the estimated wheel factor.
    Type: Application
    Filed: April 23, 2003
    Publication date: January 29, 2004
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYODA KOKI KABUSHIKI KAISHA, ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Eiichi Ono, Yuji Muragishi, Katsuhiro Asano, Minekazu Momiyama, Syoji Ogawa, Kenji Asano, Yuzo Imoto, Hiroaki Kato