Patents by Inventor Makoto HIGASHINO

Makoto HIGASHINO 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).

  • Patent number: 11933640
    Abstract: A magnetic linear position detector includes a stator and a mover that is movable along a first direction with respect to the stator. One of the stator and the mover includes a magnetic detector, and the other of the stator and the mover includes a magnet. The magnet has a first face facing the magnetic detector, and the first face is provided alternately with N poles and S poles along the first direction. The magnet includes a first region and a second region provided on each side of the first region along the first direction. In the first region, a length along a second direction perpendicular to the first face is constant. In the second region, a length along the second direction is different from the length in the first region.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeshi Musha, Yoshinao Tatei, Hisanori Torii, Makoto Higashino
  • Publication number: 20230208334
    Abstract: The control device in a linear motor system calculates a current command value for the stator based on a first speed integrated value obtained by integrating a speed deviation between a speed command for the mover and an actual speed of the mover, and performs first digital filter computation on the current command value. The control device calculates a current command value for the stator based on a second speed integrated value obtained by integrating a speed deviation between a speed command for the mover and the mover's actual speed, and performs second digital filter computation on the current command value. The current command calculating unit calculates a second speed integrated value based on the first speed integrated value used by the control device, and performs the second digital filter computation using a value of the first digital filter computation of the control device.
    Type: Application
    Filed: May 13, 2020
    Publication date: June 29, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Makoto HIGASHINO, Satoshi ODAIRA
  • Publication number: 20230049222
    Abstract: A magnetic linear position detector includes a stator and a mover that is movable along a first direction with respect to the stator. One of the stator and the mover is provided with a magnetic detector. The other of the stator and the mover is provided with a magnet having a first face facing the magnetic detector. The first face is magnetized in such a manner that a magnetization direction changes in an arc shape around a magnetization center point. The magnetic detector is an element whose output changes depending on a direction of a magnetic field.
    Type: Application
    Filed: March 10, 2020
    Publication date: February 16, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Makoto HIGASHINO, Takeshi MUSHA, Yoshinao TATEI, Hisanori TORII
  • Publication number: 20230033559
    Abstract: A magnetic linear position detector includes a stator and a mover that is movable along a first direction with respect to the stator. One of the stator and the mover includes a magnetic detector, and the other of the stator and the mover includes a magnet. The magnet has a first face facing the magnetic detector, and the first face is provided alternately with N poles and S poles along the first direction. The magnet includes a first region and a second region provided on each side of the first region along the first direction. In the first region, a length along a second direction perpendicular to the first face is constant. In the second region, a length along the second direction is different from the length in the first region.
    Type: Application
    Filed: March 10, 2020
    Publication date: February 2, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takeshi MUSHA, Yoshinao TATEI, Hisanori TORII, Makoto HIGASHINO
  • Patent number: 10520059
    Abstract: A vibration isolator includes: a vibration isolator moving part that suppresses vibration caused by operation of a drive unit moving part; a vibration isolating speed generation unit that generates a vibration isolating command speed on the basis of a target position of the drive unit moving part; a return speed generation unit that generates a return command speed for returning the vibration isolator moving part to an original position; a control speed generation unit that generates a control command speed by adding the vibration isolating command speed generated by the vibration isolating speed generation unit and the return command speed generated by the return speed generation unit; and a vibration isolation control unit that controls the vibration isolator moving part on the basis of the control command speed generated by the control speed generation unit.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Makoto Higashino, Shinya Nagata
  • Publication number: 20190309820
    Abstract: A vibration isolator includes: a vibration isolator moving part that suppresses vibration caused by operation of a drive unit moving part; a vibration isolating speed generation unit that generates a vibration isolating command speed on the basis of a target position of the drive unit moving part; a return speed generation unit that generates a return command speed for returning the vibration isolator moving part to an original position; a control speed generation unit that generates a control command speed by adding the vibration isolating command speed generated by the vibration isolating speed generation unit and the return command speed generated by the return speed generation unit; and a vibration isolation control unit that controls the vibration isolator moving part on the basis of the control command speed generated by the control speed generation unit.
    Type: Application
    Filed: April 25, 2019
    Publication date: October 10, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Makoto HIGASHINO, Shinya NAGATA
  • Patent number: 10389290
    Abstract: A motor control apparatus applied to a structure in which a plurality of synchronous motors connected in parallel and mechanically coupled to each other is driven by a single power converter, includes a vector control unit and an abnormality detection unit. The vector control unit divides a current flowing in/out the synchronous motors into a q-axis current and a d-axis current and individually controls the divided currents based on a q-axis current command value and a d-axis current command value. The abnormality detection unit detects whether at least one synchronous motor is wrongly wired or is disconnected based on a q-axis inductance, the q-axis current command value, a rotation speed of the synchronous motors, and a d-axis voltage command value.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: August 20, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Makoto Higashino, Satoru Terashima
  • Publication number: 20180262141
    Abstract: A motor control apparatus applied to a structure in which a plurality of synchronous motors connected in parallel and mechanically coupled to each other is driven by a single power converter, includes a vector control unit and an abnormality detection unit. The vector control unit divides a current flowing in/out the synchronous motors into a q-axis current and a d-axis current and individually controls the divided currents based on a q-axis current command value and a d-axis current command value. The abnormality detection unit detects whether at least one synchronous motor is wrongly wired or is disconnected based on a q-axis inductance, the q-axis current command value, a rotation speed of the synchronous motors, and a d-axis voltage command value.
    Type: Application
    Filed: September 5, 2016
    Publication date: September 13, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Makoto HIGASHINO, Satoru TERASHIMA