Patents by Inventor Tomoya Ushimura

Tomoya Ushimura 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).

  • Road surface frictional coefficient estimating apparatus
    Patent number: 8315758
    Abstract: A road surface frictional coefficient estimating apparatus has a device for determining a first estimated value of a yaw moment Mnsp_estm generated at an NSP of a vehicle due to the resultant force of road surface reaction forces acting on each wheel by using, for example, a frictional coefficient estimated value that has been determined, and a device for determining a second estimated value of a yaw moment Mnsp_sens generated at the NSP from the observed value of motional state amounts defining an inertial force moment at the NSP. The increasing/decreasing manipulated variable of the frictional coefficient estimated value is sequentially determined on an error (Mnsp_sens?Mnsp_estm) such that the error is converged to zero, and the road surface frictional coefficient is updated on the basis of the increasing/decreasing manipulated variable.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: November 20, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toru Takenaka, Hiroyuki Urabe, Osamu Yano, Yoshihiro Mori, Tomoya Ushimura
  • ROAD SURFACE FRICTIONAL COEFFICIENT ESTIMATING APPARATUS
    Publication number: 20100211256
    Abstract: A road surface frictional coefficient estimating apparatus has a device for determining a first estimated value of a yaw moment Mnsp_estm generated at an NSP of a vehicle due to the resultant force of road surface reaction forces acting on each wheel by using, for example, a frictional coefficient estimated value that has been determined, and a device for determining a second estimated value of a yaw moment Mnsp_sens generated at the NSP from the observed value of motional state amounts defining an inertial force moment at the NSP. The increasing/decreasing manipulated variable of the frictional coefficient estimated value is sequentially determined on an error (Mnsp_sens?Mnsp_estm) such that the error is converged to zero, and the road surface frictional coefficient is updated on the basis of the increasing/decreasing manipulated variable.
    Type: Application
    Filed: February 11, 2010
    Publication date: August 19, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Toru Takenaka, Hiroyuki Urabe, Osamu Yano, Yoshihiro Mori, Tomoya Ushimura