Patents by Inventor Hiroyuki Kishioka

Hiroyuki Kishioka 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).

  • Electric power steering control apparatus and electric power steering control method
    Patent number: 10536102
    Abstract: A main controller includes: a d-axis current limiter configured to calculate a d-axis current limiting value with priority, based on a dq-converted current limiting value, and calculate a limited d-axis current command value by clipping the d-axis current command value to be the d-axis current limiting value or less; a q-axis current limiter configured to calculate a q-axis current limiting value, based on the dq-converted current limiting value and the limited d-axis current command value, and calculate a limited q-axis current command value by clipping the q-axis current command value to be the q-axis current limiting value or less; and an inverter controller configured to control motor current, based on the limited d-axis current command value and the limited q-axis current command value.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: January 14, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Kishioka, Susumu Zeniya, Takashi Goto, Daisuke Tanaka, Akiyoshi Takashima, Eiji Iwami
  • ELECTRIC POWER STEERING CONTROL APPARATUS AND ELECTRIC POWER STEERING CONTROL METHOD
    Publication number: 20180145622
    Abstract: A main controller includes: a d-axis current limiter configured to calculate a d-axis current limiting value with priority, based on a dq-converted current limiting value, and calculate a limited d-axis current command value by clipping the d-axis current command value to be the d-axis current limiting value or less; a q-axis current limiter configured to calculate a q-axis current limiting value, based on the dq-converted current limiting value and the limited d-axis current command value, and calculate a limited q-axis current command value by clipping the q-axis current command value to be the q-axis current limiting value or less; and an inverter controller configured to control motor current, based on the limited d-axis current command value and the limited q-axis current command value.
    Type: Application
    Filed: May 1, 2015
    Publication date: May 24, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroyuki KISHIOKA, Susumu ZENIYA, Takashi GOTO, Daisuke TANAKA, Akiyoshi TAKASHIMA, Eiji IWAMI
  • Motor control device and electric power steering device using same
    Patent number: 9575127
    Abstract: Provided are a motor control device (1) for controlling a motor (2) having a plurality of phases, for quickly and accurately detecting a phase in which an open-state fault has occurred when the open-state fault occurs in a target phase. When a power-supply voltage (Vb) is equal to or higher than a predetermined voltage (Vthr), a motor rotation speed (?) is equal to or lower than a predetermined speed (?thr), a target x-phase voltage command (Vx*) is not in the vicinity of zero, a current (Ix) of the target x-phase is equal to or lower than a predetermined current (Iu_thr), and a state in which a control error is equal to or larger than a predetermined error is detected over a predetermined time period or longer, occurrence of an open-state fault in the target phase is determined.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: February 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Isao Kezobo, Masahiro Iezawa, Susumu Zeniya, Eiji Iwami, Yusuke Fujiki, Hiroyuki Kishioka, Sadaaki Kamei, Yoshihiko Kimpara, Jiro Okada
  • MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE USING SAME
    Publication number: 20140054103
    Abstract: Provided are a motor control device (1) for controlling a motor (2) having a plurality of phases, for quickly and accurately detecting a phase in which an open-state fault has occurred when the open-state fault occurs in a target phase. When a power-supply voltage (Vb) is equal to or higher than a predetermined voltage (Vthr), a motor rotation speed (?) is equal to or lower than a predetermined speed (?thr), a target x-phase voltage command (Vx*) is not in the vicinity of zero, a current (Ix) of the target x-phase is equal to or lower than a predetermined current (Iu_thr), and a state in which a control error is equal to or larger than a predetermined error is detected over a predetermined time period or longer, occurrence of an open-state fault in the target phase is determined.
    Type: Application
    Filed: May 7, 2012
    Publication date: February 27, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Isao Kezobo, Masahiro Iezawa, Susumu Zeniya, Eiji Iwami, Yusuke Fujiki, Hiroyuki Kishioka, Sadaaki Kamei, Yoshihiko Kimpara, Jiro Okada