Patents by Inventor Yuuji KATSUMATA

Yuuji KATSUMATA 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).

  • Patent number: 10328803
    Abstract: the control device for electric vehicle in the first embodiment, in the electric vehicle including the motor that functions as the traveling driving source and provides a regenerative braking force to the vehicle, and the friction brakes that provide the friction braking force to the vehicle, detects the motor rotation speed proportionate to a running speed of this electric vehicle, estimates the disturbance torque that acts on the motor, and performs the control such that the motor torque command value converges to the disturbance torque estimated value as the motor rotation speed decreases. Then, when the motor rotation speed becomes almost 0, the control device performs the control such that the friction-braking-amount command value with respect to the friction brakes converges to a value determined on the basis of the disturbance torque estimated value, and causes the motor torque command value to converge to almost 0.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 25, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hiroyuki Komatsu, Ken Itou, Takashi Nakajima, Yuuji Katsumata, Akira Sawada
  • Publication number: 20180244158
    Abstract: the control device for electric vehicle in the first embodiment, in the electric vehicle including the motor that functions as the traveling driving source and provides a regenerative braking force to the vehicle, and the friction brakes that provide the friction braking force to the vehicle, detects the motor rotation speed proportionate to a running speed of this electric vehicle, estimates the disturbance torque that acts on the motor, and performs the control such that the motor torque command value converges to the disturbance torque estimated value as the motor rotation speed decreases. Then, when the motor rotation speed becomes almost 0, the control device performs the control such that the friction-braking-amount command value with respect to the friction brakes converges to a value determined on the basis of the disturbance torque estimated value, and causes the motor torque command value to converge to almost 0.
    Type: Application
    Filed: August 10, 2016
    Publication date: August 30, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hiroyuki KOMATSU, Ken ITOU, Takashi NAKAJIMA, Yuuji KATSUMATA, Akira SAWADA