Patents by Inventor Koutaro Okimura

Koutaro Okimura 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).

  • Damping force control apparatus
    Patent number: 8914193
    Abstract: The magnitude of a linear damping coefficient Cs is set so as to decrease the greater a maximum amplitude value ? of an intermediate frequency sprung acceleration is. In the case where a damping force control apparatus carries out control for dampening vibrations of a sprung member using a nonlinear H-infinity control theory, the linear damping coefficient Cs is set to a high value when the maximum amplitude value ? of the intermediate frequency sprung acceleration inputted to a suspension apparatus is low. Accordingly, a requested damping force Freq also increases, which makes it possible to quickly dampen vibrations in the sprung member. Meanwhile, in the case where the maximum amplitude value ? of the intermediate frequency sprung acceleration is high, the linear damping coefficient Cs is set to a low value.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: December 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Atsushi Ogawa, Motohiko Honma, Koutaro Okimura, Taisuke Hayashi, Takahito Watanabe
  • Height controlling apparatus
    Patent number: 8326488
    Abstract: A height controlling apparatus for controlling at least one actual height as a relative position of (a) a body of a vehicle and (b) at least one wheel of the vehicle relative to each other, the apparatus including at least one height controlling actuator which changes the at least one actual height; and an actuator control device which controls the at least one height controlling actuator so that the at least one actual height approaches at least one target height.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: December 4, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshio Onuma, Masaaki Tabata, Takenari Yamaguchi, Masaki Kanatani, Atsushi Mizuta, Hideki Ohashi, Koutaro Okimura
  • DAMPING FORCE CONTROL APPARATUS
    Publication number: 20120046829
    Abstract: The magnitude of a linear damping coefficient Cs is set so as to decrease the greater a maximum amplitude value ? of an intermediate frequency sprung acceleration is. In the case where a damping force control apparatus carries out control for dampening vibrations of a sprung member using a nonlinear H-infinity control theory, the linear damping coefficient Cs is set to a high value when the maximum amplitude value ? of the intermediate frequency sprung acceleration inputted to a suspension apparatus is low. Accordingly, a requested damping force Freq also increases, which makes it possible to quickly dampen vibrations in the sprung member. Meanwhile, in the case where the maximum amplitude value ? of the intermediate frequency sprung acceleration is high, the linear damping coefficient Cs is set to a low value.
    Type: Application
    Filed: February 23, 2009
    Publication date: February 23, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Atsushi Ogawa, Motohiko Honma, Koutaro Okimura, Taisuke Hayashi, Takahito Watanabe
  • Height controlling apparatus
    Patent number: 7761205
    Abstract: A height controlling apparatus for controlling at least one actual height as a relative position of (a) a body of a vehicle and (b) at least one wheel of the vehicle relative to each other, the apparatus including at least one height controlling actuator which changes the at least one actual height; and an actuator control device which controls the at least one height controlling actuator so that the at least one actual height approaches at least one target height.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: July 20, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshio Onuma, Masaaki Tabata, Takenari Yamaguchi, Masaki Kanatani, Atsushi Mizuta, Hideki Ohashi, Koutaro Okimura
  • Height controlling apparatus
    Publication number: 20100152970
    Abstract: A height controlling apparatus for controlling at least one actual height as a relative position of (a) a body of a vehicle and (b) at least one wheel of the vehicle relative to each other, the apparatus including at least one height controlling actuator which changes the at least one actual height; and an actuator control device which controls the at least one height controlling actuator so that the at least one actual height approaches at least one target height.
    Type: Application
    Filed: February 12, 2010
    Publication date: June 17, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshio Onuma, Masaaki Tabata, Takenari Yamaguchi, Masaki Kanatani, Atsushi Mizuta, Hideki Ohashi, Koutaro Okimura
  • Height controlling apparatus
    Publication number: 20060142916
    Abstract: A height controlling apparatus for controlling at least one actual height as a relative position of (a) a body of a vehicle and (b) at least one wheel of the vehicle relative to each other, the apparatus including at least one height controlling actuator which changes the at least one actual height; and an actuator control device which controls the at least one height controlling actuator so that the at least one actual height approaches at least one target height.
    Type: Application
    Filed: December 12, 2005
    Publication date: June 29, 2006
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshio Onuma, Masaaki Tabata, Takenari Yamaguchi, Masaki Kanatani, Atsushi Mizuta, Hideki Ohashi, Koutaro Okimura