Patents by Inventor Kei Kashiyama

Kei Kashiyama 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).

  • Electronic control device, control method, and non-transitory computer readable medium
    Patent number: 11254355
    Abstract: An electronic control device controls an electronic power steering apparatus including a motor configured to assist steering of a steering wheel provided in a vehicle and a torque sensor configured to detect a steering torque applied to the steering wheel. The electronic control device includes: a torque current control unit that sets a first current command value to be supplied to the motor according to a value of the steering torque applied to the steering wheel; a differential control unit that calculates a torque differential value as a differential value of the steering torque and sets a second current command value according to the torque differential value and a rotation speed of the motor; and a command value calculation unit that calculates a motor current command value to be supplied to the motor based on the first current command value and the second current command value.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: February 22, 2022
    Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.
    Inventors: Kei Kashiyama, Tomohiro Sakata, Yoshihisa Yamada
  • ELECTRONIC CONTROL DEVICE, CONTROL METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
    Publication number: 20200189650
    Abstract: An electronic control device controls an electronic power steering apparatus including a motor configured to assist steering of a steering wheel provided in a vehicle and a torque sensor configured to detect a steering torque applied to the steering wheel. The electronic control device includes: a torque current control unit that sets a first current command value to be supplied to the motor according to a value of the steering torque applied to the steering wheel; a differential control unit that calculates a torque differential value as a differential value of the steering torque and sets a second current command value according to the torque differential value and a rotation speed of the motor; and a command value calculation unit that calculates a motor current command value to be supplied to the motor based on the first current command value and the second current command value.
    Type: Application
    Filed: October 21, 2019
    Publication date: June 18, 2020
    Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.
    Inventors: Kei Kashiyama, Tomohiro Sakata, Yoshihisa Yamada