Patents by Inventor Shunsuke SUGIURA

Shunsuke SUGIURA 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 and electric power steering system
    Patent number: 9806648
    Abstract: In a motor control device that can perform more appropriate motor control, a switching arm has a first upper FET, a second upper FET, and a lower FET connected in series to one another. A source electrode of the second upper FET and a drain electrode of the lower FET are connected to each other via an intermediate line. The intermediate line is connected to a U-phase motor coil of a motor via a power line. The first upper FET, the second upper FET, and the lower FET are each provided with a parasitic diode that prevents current from flowing from a battery side to a ground side. A phase opening relay FET is provided on the U-phase power line. A parasitic diode of the phase opening relay FET is provided such that a current is not applied from the U-phase motor coil to the U-phase switching arm.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 31, 2017
    Assignee: JTEKT CORPORATION
    Inventor: Shunsuke Sugiura
  • MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING SYSTEM
    Publication number: 20160308478
    Abstract: In a motor control device that can perform more appropriate motor control, a switching arm has a first upper FET, a second upper FET, and a lower FET connected in series to one another. A source electrode of the second upper FET and a drain electrode of the lower FET are connected to each other via an intermediate line. The intermediate line is connected to a U-phase motor coil of a motor via a power line. The first upper FET, the second upper FET, and the lower FET are each provided with a parasitic diode that prevents current from flowing from a battery side to a ground side. A phase opening relay FET is provided on the U-phase power line. A parasitic diode of the phase opening relay FET is provided such that a current is not applied from the U-phase motor coil to the U-phase switching arm.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 20, 2016
    Applicant: JTEKT CORPORATION
    Inventor: Shunsuke SUGIURA