Patents by Inventor Tetsuya MATSUBARA

Tetsuya MATSUBARA 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: 10790774
    Abstract: A drive system for an electric motor includes a first inverter that includes first switching elements, a second inverter that includes second switching elements, and a control unit that includes a first inverter control calculation section controlling on-off operation of each of the first switching elements based on a first carrier wave and a first modulation wave, a second inverter control calculation section controlling on-off operation of each of the second switching elements based on a second carrier wave and a second modulation wave, and a control synchronization section synchronizing the first carrier wave with the second carrier wave. When a sum of voltages of the first voltage source and the second voltage source is more than a voltage determination threshold, and torque of a rotating electric machine is smaller than a torque determination threshold, the control synchronization section synchronizes the first carrier wave with the second carrier wave.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: September 29, 2020
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshimitsu Takahashi, Masahito Fujieda, Tetsuya Yamada, Ryuji Omata, Kiyotaka Matsubara, Makoto Nakamura, Daigo Nobe
  • Publication number: 20200220437
    Abstract: A manufacturing method of a core for a rotary electric machine including forming a bridge portion, forming a stator side hole portion in at least a first portion of a portion of an electric steel plate in which a slot portion is formed. Then forming a rotor side hole portion in at least a part of a portion of the electric steel plate in which a hole portion is formed; and forming a rotor plate member and a stator plate member by blanking the electric steel plate.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 9, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Masayuki MAKI, Tetsuya MATSUBARA
  • Publication number: 20200212735
    Abstract: A method of manufacturing a rotor including a rotor core and a permanent magnet that is bonded to the rotor core with an adhesive containing a foaming agent, wherein applying the adhesive includes applying the adhesive such that the adhesive is spread to a portion on a front side with respect to the application area on the application surface, by moving the nozzle to a front side in the nozzle traveling direction with respect to a position in the application area at which feeding of the adhesive by the pump is finished.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 2, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Motoki KORI, Tetsuya MATSUBARA, Yosuke MIYAZAKI, Taisuke NAKAMURA
  • Publication number: 20200186015
    Abstract: A manufacturing method of a core for a rotary electric machine includes: a step of forming a stator side release hole in at least a first portion of a portion of an electric steel plate in which a slot portion is formed; a step of forming a rotor side hole portion in at least a part of a portion of the electric steel plate in which a hole portion is formed; a step of forming a flattened portion; and a step of forming a rotor plate member and a stator plate member by blanking the electric steel plate.
    Type: Application
    Filed: September 28, 2018
    Publication date: June 11, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Masayuki MAKI, Tetsuya MATSUBARA
  • Publication number: 20200177063
    Abstract: A method of manufacturing a rotor that includes a rotor core and a permanent magnet fixed to the rotor core using an adhesive, the method includes applying the adhesive, which contains a volatile agent, to an adhesive placement position of the permanent magnet; drying the adhesive by volatilizing the volatile agent by a magnet heater directly heating the permanent magnet such that a temperature of the permanent magnet becomes higher than a temperature of the adhesive after applying the adhesive; placing the permanent magnet on the rotor core after drying the adhesive; and fixing the permanent magnet to the rotor core by curing the adhesive after placing the permanent magnet.
    Type: Application
    Filed: March 27, 2018
    Publication date: June 4, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Tetsuya MATSUBARA, Motoki KORI
  • Publication number: 20200161945
    Abstract: A method for manufacturing a rotor including a rotor core and a permanent magnet, the rotor core having a magnet hole, and the permanent magnet being inserted in the magnet hole and fixed to the rotor core with an adhesive, including the steps of: applying the adhesive, inserting the permanent magnet into the magnet hole of the rotor core, volatilizing the diluting solvent, expanding the expanding agent, and fixing the permanent magnet to the rotor core.
    Type: Application
    Filed: August 21, 2018
    Publication date: May 21, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Tetsuya MATSUBARA, Motoki KORI, Akira TAKASU, Takamasa KONDO
  • Patent number: 10557436
    Abstract: A method of controlling a fuel injection of a diesel engine for performing a plurality of fuel injections to cause a plurality of combustions inside a cylinder in one combustion cycle, is provided, which includes performing, on compression stroke, the plurality of fuel injections at substantially constant injection intervals while increasing an injection amount as an in-cylinder oxygen concentration decreases, and performing, after the plurality of fuel injections, another fuel injection including a larger injection amount than in the plurality of fuel injections near a top dead center of the compression stroke.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: February 11, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Naotoshi Shirahashi, Tsunehiro Mori, Takeshi Matsubara, Takeshi Inazumi, Tetsuya Fujioka
  • Publication number: 20190386599
    Abstract: A drive system for an electric motor includes a first inverter that includes first switching elements, a second inverter that includes second switching elements, and a control unit that includes a first inverter control calculation section controlling on-off operation of each of the first switching elements based on a first carrier wave and a first modulation wave, a second inverter control calculation section controlling on-off operation of each of the second switching elements based on a second carrier wave and a second modulation wave, and a control synchronization section synchronizing the first carrier wave with the second carrier wave. When a sum of voltages of the first voltage source and the second voltage source is more than a voltage determination threshold, and torque of a rotating electric machine is smaller than a torque determination threshold, the control synchronization section synchronizes the first carrier wave with the second carrier wave.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 19, 2019
    Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshimitsu TAKAHASHI, Masahito FUJIEDA, Tetsuya YAMADA, Ryuji OMATA, Kiyotaka MATSUBARA, Makoto NAKAMURA, Daigo NOBE
  • Publication number: 20190372440
    Abstract: A rotary electric machine member manufacturing method includes: a step of providing a motor core by stacking a plurality of electromagnetic steel sheets; and a step of welding the motor core by keyhole welding while pressurizing the motor core in a stacking direction with a welding pressure lower than that at which the thickness of the motor core in the stacking direction levels off. The thickness is a length of the motor core between a first end of the motor core and a second end of the motor core.
    Type: Application
    Filed: March 9, 2018
    Publication date: December 5, 2019
    Applicant: AISIN AW CO., LTD.
    Inventors: Hideharu USHIDA, Tetsuya MATSUBARA, Takehiro ANAI
  • Publication number: 20190307317
    Abstract: An endoscope includes: an elevator configured to swing such that an instrument provided in an insertion portion of the endoscope changes a protruding direction; a shaft member configured to rotate about an axis, the elevator being provided on an end portion of the shaft member on one side in an axial direction that extends along the axis, the shaft member supporting the elevator on one side in the axis direction, and the shaft member being configured to be capable of rotating integrally with the elevator about the axis; a drive member that is fixed to an intermediate portion of the shaft member in the direction along the axis, and is configured to input, to the shaft member, rotation force for rotation of the shaft member about the axis; and a first bearing and a second bearing that support the shaft member so as to be capable of rotating.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 10, 2019
    Applicant: HOYA CORPORATION
    Inventors: Akiyoshi MATSUBARA, Tetsuya TARUMOTO
  • Publication number: 20190252958
    Abstract: In a method for manufacturing a rotor, each of adhesive placement portions that are provided between a surface of a permanent magnet on the radially inner side and grooves is formed so as to cover a part of an adhesive applied to the permanent magnet on the radially inner side and parts of the adhesive on both sides in the circumferential direction.
    Type: Application
    Filed: September 1, 2017
    Publication date: August 15, 2019
    Applicant: AISIN AW CO., LTD.
    Inventors: Hideharu USHIDA, Tetsuya MATSUBARA, Tetsuya TAKAHASHI
  • Patent number: 10362306
    Abstract: Included are an encoding section, a decoding section, and an image recognition section. The encoding section performs an encoding process for a video signal to be input based on a calculated encoding mode, and transmits an encoded stream. The decoding section performs a decoding process for the received encoded stream, and outputs a decoded image. The image recognition section performs an image recognition process for the decoded image. The encoding section adjusts the encoding mode based on recognition accuracy information representing the certainty of a recognition result in the image recognition section.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: July 23, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Tetsuya Shibayama, Seiji Mochizuki, Katsushige Matsubara, Kenichi Iwata
  • Patent number: 10334262
    Abstract: The present invention is directed to reduce deterioration in parallel processing capability. In a moving-picture decoding processing apparatus, information of a first plurality of frames and a second plurality of frames is supplied from a decoding control unit to first and second decoding processing units. For decoding the information from an intermediate point to an end point of a second preceding frame by the second decoding unit in a third period, use of a result of the process of the first decoding processing unit in the third period is inhibited, and use of a result of the process of a first preceding frame by the first decoding processing unit in a second period is permitted by an end signal.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: June 25, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Katsushige Matsubara, Seiji Mochizuki, Toshiyuki Kaya, Tetsuya Shibayama
  • Publication number: 20190074740
    Abstract: A method of manufacturing a rotor includes: applying the adhesive to an adhesive placement position on an outer peripheral surface of the permanent magnet or an inner peripheral surface of the magnet hole, the adhesive containing an expansive agent that is expanded by being heated to a temperature that is equal to or higher than an expansion temperature; drying the adhesive after applying the adhesive; inserting the permanent magnet into the magnet hole of the rotor core after drying the adhesive; and fixing the permanent magnet and the rotor core to each other using the adhesive by expanding the expansive agent and curing the adhesive by heating the adhesive to a temperature that is equal to or higher than the expansion temperature after inserting the permanent magnet.
    Type: Application
    Filed: March 31, 2017
    Publication date: March 7, 2019
    Applicant: AISIN AW CO., LTD.
    Inventors: Hideharu USHIDA, Tetsuya MATSUBARA, Tetsuya TAKAHASHI, Shinya KATAYAMA
  • Patent number: 8720039
    Abstract: A laminated core punching apparatus, configured such that a stator-punching press machine that has a molding die performing a partial punching gradually approaches the shape of the stator core piece. There is a punching die to punching out the stator core piece from a strip-form steel plate, and two stator lamination stations. A rotor-punching press machine and a stator-punching press machine are constructed to operate synchronously. An intermediate loop portion capable of causing a strip-form steel plate to hang down in a loop is provided in order to adjust a length of the strip-form steel plate between the two press machines, and a loop guide portion that guides a loop locus of the strip-form steel plate from above so that the strip-form steel plate does not invert is disposed above the intermediate loop portion to be capable of ascending and descending.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: May 13, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tetsuya Matsubara, Shigeru Maeda, Atsuya Takagi, Takuya Ooura, Hajime Nishiguchi, Motoki Koori, Masahiro Hayabuchi, Susumu Kato, Keishi Ohki, Kenji Shinohara, Akio Murakami
  • Publication number: 20110232076
    Abstract: A laminated core punching apparatus, configured such that a stator-punching press machine that has a molding die performing a partial punching gradually approaches the shape of the stator core piece. There is a punching die to punching out the stator core piece from a strip-form steel plate, and two stator lamination stations. A rotor-punching press machine and a stator-punching press machine are constructed to operate synchronously. An intermediate loop portion capable of causing a strip-form steel plate to hang down in a loop is provided in order to adjust a length of the strip-form steel plate between the two press machines, and a loop guide portion that guides a loop locus of the strip-form steel plate from above so that the strip-form steel plate does not invert is disposed above the intermediate loop portion to be capable of ascending and descending.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 29, 2011
    Applicant: AISIN AW CO., LTD.
    Inventors: Tetsuya MATSUBARA, Shigeru MAEDA, Atsuya TAKAGI, Takuya OOURA, Hajime NISHIGUCHI, Motoki KOORI, Masahiro HAYABUCHI, Susumu KATO, Keishi OHKI, Kenji SHINOHARA, Akio MURAKAMI