Patents by Inventor Keigo NOMURA

Keigo NOMURA 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).

  • Publication number: 20240088343
    Abstract: An electrode manufacturing method includes a first step of applying an electrode liquid composition in a desired shape at a desired position on a substrate, the electrode liquid composition containing an electrode mixture material; a second step of acquiring positional information as to where the electrode liquid composition is applied; and a third step of cutting only the substrate at a desired position in a region other than an electrode mixture material region where the electrode liquid composition is applied to obtain an electrode cut out in a desired shape.
    Type: Application
    Filed: February 28, 2022
    Publication date: March 14, 2024
    Inventors: Hiromichi KURIYAMA, Satoshi NAKAJIMA, Shun GOTO, Tomomasa KAJITA, Masayoshi NOMURA, Keigo TAKAUJI, Miku OHKIMOTO
  • Patent number: 11843332
    Abstract: A control device for an electric motor includes a control circuit that controls an operation of an inverter circuit on the basis of a voltage command value corresponding to a difference between a current command value calculated on the basis of the position of a rotor of the electric motor, and a current flowing through the electric motor. A current estimation unit estimates the current flowing through the electric motor by substituting the voltage command value, a parameter unique to the electric motor, and a rotational speed calculated on the basis of the position of the rotor into a voltage equation serving as a model of the electric motor. An LR estimation unit estimates an inductance and a resistance of the electric motor serving as parameters on the basis of the difference between the current obtained by a current acquisition unit and the current estimated by the current estimation unit.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: December 12, 2023
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Keigo Nomura, Daisuke Matsuoka, Masamichi Nawa
  • Publication number: 20230088673
    Abstract: A control device for an electric motor includes a control circuit that controls an operation of an inverter circuit on the basis of a voltage command value corresponding to a difference between a current command value calculated on the basis of the position of a rotor of the electric motor, and a current flowing through the electric motor. A current estimation unit estimates the current flowing through the electric motor by substituting the voltage command value, a parameter unique to the electric motor, and a rotational speed calculated on the basis of the position of the rotor into a voltage equation serving as a model of the electric motor. An LR estimation unit estimates an inductance and a resistance of the electric motor serving as parameters on the basis of the difference between the current obtained by a current acquisition unit and the current estimated by the current estimation unit.
    Type: Application
    Filed: January 22, 2021
    Publication date: March 23, 2023
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Keigo NOMURA, Daisuke MATSUOKA, Masamichi NAWA