Patents by Inventor TAKUYA MAEGAWA

TAKUYA MAEGAWA 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).

  • MOTOR CONTROL DEVICE FOR STEER-BY-WIRE STEERING DEVICE
    Publication number: 20240308574
    Abstract: In a motor control device for a steer-by-wire steering device, the motor control device having a redundant system consisting of two systems, a first turning current command value is calculated in a first system, and a second turning current command value is calculated in a second system. A third processor outputs the first turning current command value when the two current command values are not divergent and outputs the second turning current command value when the two current command values are divergent. When a determination of a rapid steering operation is made, the third processor outputs the first turning current command value regardless of whether or not the two current command values are divergent.
    Type: Application
    Filed: March 12, 2024
    Publication date: September 19, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATION, DENSO CORPORATION
    Inventors: Kenji Shibata, Koichi Nishimura, Takahito Ishino, Ryo Yamazaki, Hiroyasu Inoue, Isao Namikawa, Nobuyori Nakajima, Hiroki Tomizawa, Takuya Maegawa
  • Motor control device and steering system having the same
    Patent number: 11987298
    Abstract: A main power supply having a large capacity and a backup power supply having a small capacity are switchable by a power supply switching determination unit in a system. A motor control device drives a motor by the main power supply or the backup power supply. A drive control unit outputs a drive signal, calculated by feedback control of the current detection value with respect to the current command value, to an inverter circuit. When the power supply switching determination unit switches from the main power supply to the backup power supply, the drive control unit moves from a normal control using the main power supply to a backup control that restricts an electric power consumption and prevents the backup power supply from stopping.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: May 21, 2024
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATION
    Inventors: Takuya Maegawa, Hiroki Tomizawa, Hiroyasu Otake, Yuuta Kajisawa, Yuji Fujita, Tokuaki Hibino, Yosuke Yamashita, Atsushi Satou, Masaharu Yamashita
  • MOTOR CONTROL DEVICE AND STEERING SYSTEM HAVING THE SAME
    Publication number: 20220315099
    Abstract: A main power supply having a large capacity and a backup power supply having a small capacity are switchable by a power supply switching determination unit in a system. A motor control device drives a motor by the main power supply or the backup power supply. A drive control unit outputs a drive signal, calculated by feedback control of the current detection value with respect to the current command value, to an inverter circuit. When the power supply switching determination unit switches from the main power supply to the backup power supply, the drive control unit moves from a normal control using the main power supply to a backup control that restricts an electric power consumption and prevents the backup power supply from stopping.
    Type: Application
    Filed: April 1, 2022
    Publication date: October 6, 2022
    Inventors: TAKUYA MAEGAWA, HIROKI TOMIZAWA, HIROYASU OTAKE, YUUTA KAJISAWA, YUJI FUJITA, TOKUAKI HIBINO, YOSUKE YAMASHITA, ATSUSHI SATOU, MASAHARU YAMASHITA