Patents by Inventor Shunsuke HARIGAE

Shunsuke HARIGAE 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 drive controller and motor drive control method
    Patent number: 11005398
    Abstract: Provided is a motor drive controller capable of a locking energization operation while preventing increase in temperature of a coil. The motor drive controller includes a motor drive section selectively energizing coils with a plurality of phases of a motor and a locking energization control section. The locking energization control section performs a locking energization operation when the motor is started or restarted and holds a rotor of the motor in a position corresponding to the coil in which the lock current flows. In case of performing the locking energization operation, the locking energization control section switches a locking energization pattern for applying the lock current in the coil from a locking energization pattern when the preceding locking energization operation was performed. The locking energization control section controls the motor drive section so that the lock current flows in the coil in accordance with the switched locking energization pattern.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: May 11, 2021
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hiroyuki Kaidu, Youhei Serizawa, Shunsuke Harigae, Zhou Xiao
  • MOTOR DRIVE CONTROLLER AND MOTOR DRIVE CONTROL METHOD
    Publication number: 20180342965
    Abstract: Provided is a motor drive controller capable of a locking energization operation while preventing increase in temperature of a coil. The motor drive controller includes a motor drive section selectively energizing coils with a plurality of phases of a motor and a locking energization control section. The locking energization control section performs a locking energization operation when the motor is started or restarted and holds a rotor of the motor in a position corresponding to the coil in which the lock current flows. In case of performing the locking energization operation, the locking energization control section switches a locking energization pattern for applying the lock current in the coil from a locking energization pattern when the preceding locking energization operation was performed. The locking energization control section controls the motor drive section so that the lock current flows in the coil in accordance with the switched locking energization pattern.
    Type: Application
    Filed: May 18, 2018
    Publication date: November 29, 2018
    Inventors: Hiroyuki KAIDU, Youhei SERIZAWA, Shunsuke HARIGAE, Zhou XIAO