Patents by Inventor Kenta Kubo

Kenta Kubo 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).

  • Publication number: 20230013379
    Abstract: Provided is a resolver capable of increasing an accuracy of a detected angle of the resolver. The resolver includes: a stator; and a rotor, wherein the rotor includes a plurality of salient poles; wherein the stator includes: a stator core having a plurality of teeth, and a plurality of winding groups each of which is provided on each of the plurality of teeth, wherein the winding groups are divided into two systems, wherein the numbers of turns of the excitation windings are distributed in a form of a sine wave of Ne-th spatial order, wherein each of the numbers of turns of a first output windings and the numbers of turns of a second output windings are distributed in a form of a sine wave of |Ne±Nx|-th spatial order, and wherein the following expressions are satisfied, Nout1=N1 cos{|Ne±Nx|(i?1)/Ns×2?+?}, Nout2=N1 cos{|Ne±Nx|(i?1)/Ns×2?+?}, and 90(deg)<|???|<140(deg).
    Type: Application
    Filed: January 17, 2020
    Publication date: January 19, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroko IKEDA, Tatsuya MORI, Toshihiro MATSUNAGA, Kenji IKEDA, Kenta KUBO
  • Publication number: 20230001979
    Abstract: To provide a control apparatus for AC rotary machine and an electric power steering apparatus which can reduce the error component of the current detection value close to the mechanical resonance period of AC rotary machine. A control apparatus for AC rotary machine detects currents which flow into three-phase windings at a current detection period which is a first natural number times of a carrier period; calculates current detection values, by performing a current addition processing which adds current detection values detected at this time, and current detection values detected before an addition period which is a second natural number times of the current detection period; and calculates the voltage command values of three-phase based on the current detection values after current addition processing, wherein the second natural number is set to a natural number that the addition period becomes the closest to the half period of the mechanical resonance period.
    Type: Application
    Filed: January 15, 2020
    Publication date: January 5, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Kenta KUBO, Itaru IKI, Yu HIROTANI
  • Patent number: 11541779
    Abstract: A vehicle includes: an engine; an exhaust pipe through which exhaust gas from the engine is released; a battery pack located near the exhaust pipe; and an ECU that executes, during limp-home traveling of the vehicle, control in which the battery pack is not charged and discharged, and output suppression control in which output of the engine is suppressed. In the output suppression control, when the catalyst temperature is above a threshold value, the ECU suppresses the output of the engine, as compared to when the catalyst temperature is below the threshold value, while maintaining a state in which the engine can output power.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: January 3, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuyuki Tanaka, Kazuki Kubo, Kimihito Nakamura, Kenta Fujimoto, Takayuki Oshino, Yoshihiro Uchida, Koichi Tsuji
  • Publication number: 20220393627
    Abstract: To provide a motor controller which can suppress occurrence of a torque difference between systems, even if a DC voltage difference occurs between systems, in the case where each system is provided with a DC power source. A motor controller is provided with a first controller that controls so that the first q-axis current detection value approaches the second q-axis current detection value or the second q-axis current command value obtained from the second controller, when determining that the first DC voltage is higher than the second DC voltage; and a second controller that controls so that the second q-axis current detection value approaches the first q-axis current detection value or the first q-axis current command value obtained from the first controller, when determining that the second DC voltage is higher than the first DC voltage.
    Type: Application
    Filed: November 27, 2019
    Publication date: December 8, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Jun KITAGAWA, Tatsuya MORI, Hiroko IKEDA, Haruna KOYAMA, Kenta KUBO
  • Publication number: 20220376641
    Abstract: To provide an AC rotary machine apparatus which can determine the operation stop of the control circuit of the other system with good accuracy. An AC rotary machine apparatus, including: a resolver is provided with a first system excitation winding, first system two output windings, a second system excitation winding, and second system two output windings, in which a magnetic interference occurs between a first system and a second system; a first system control circuit that applies AC voltage with a first period to the first system excitation winding; and a second system control circuit that applies AC voltage with a second period to the second system excitation winding, wherein the first system control circuit determines whether the operation of the second system control circuit stops, based on the components of the second period extracted from the first system output signals.
    Type: Application
    Filed: September 26, 2019
    Publication date: November 24, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Hiroko IKEDA, Toshihiro MATSUNAGA, Kenji IKEDA, Kenta KUBO
  • Publication number: 20220373939
    Abstract: An intermediate transfer body includes a base layer and a surface layer disposed on the base layer, in which surface layer includes a sea-island structure that includes a sea phase and an island phase, in which the sea phase includes a resin, the island phase including an organopolysiloxane.
    Type: Application
    Filed: September 7, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Hiroaki TANAKA, Shigeru FUKUDA, Kenta YAMAKOSHI, Yosuke KUBO, Masayuki SEKO
  • Publication number: 20220363310
    Abstract: The redundant resolver includes: a resolver body having a rotor, a stator opposed to the rotor and having Ns teeth arranged in a circumferential direction, and an excitation winding and two phases of output windings wound on the stator; an excitation circuit configured to supply power to the excitation winding; and an angle calculation unit configured to calculate a rotation angle on the basis of signals from the two phases of output windings. The stator is divided in the circumferential direction into M pieces which serve as M tooth blocks, N (M?N) redundancy systems are formed on the basis of the M tooth blocks. The excitation circuit and the angle calculation unit are provided to each system so as be independent among the systems. Gap magnetic flux densities at both end portions of each tooth block are set to change mildly.
    Type: Application
    Filed: November 18, 2019
    Publication date: November 17, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroko IKEDA, Tatsuya MORI, Toshihiro MATSUNAGA, Kenji IKEDA, Kenta KUBO
  • Patent number: 11492480
    Abstract: The invention provides a fluoroelastomer composition that can be crosslinked at an industrially sufficient rate without the use of a graphene having specific surface properties and can provide a fluoroelastomer molded article having higher tensile strength and better abrasion resistance than conventional fluoroelastomer molded articles even though having a similar tensile modulus to conventional fluoroelastomer molded articles. The fluoroelastomer composition contains a fluoroelastomer that contains a crosslinkable group-containing monomer unit and an elongated sheet-shaped graphene. The graphene exhibits a ratio (L/W) of a maximum length (L) and a width (W) of 2 to 105, and the graphene exhibits a ratio (L/T) of the maximum length (L) and a thickness (T) of 1×101 to 1×107.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: November 8, 2022
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, DAIKIN INDUSTRIES, LTD.
    Inventors: Masatoshi Shioya, Kenta Kubo, Shinya Maruta, Tsuyoshi Noguchi
  • Publication number: 20220251249
    Abstract: The present invention provides a polymer which has a polymerizable functional group but still can be thermoformed without being crosslinked and which undergoes crosslinking upon irradiation with an active energy ray after being formed, and a composition including the polymer. An active energy ray crosslinkable thermoplastic polymer includes specific monomer units (1). The ratio of the number of moles of the monomer units represented by the general formula (1) to the number of moles of all monomer units constituting the polymer is not less than 1 mol %. The number average molecular weight (Mn) of the active energy ray crosslinkable thermoplastic polymer is 20,000 to 500,000.
    Type: Application
    Filed: March 12, 2020
    Publication date: August 11, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Kenta TAKEMOTO, Keiji KUBO
  • Publication number: 20220224172
    Abstract: In a redundancy resolver device, winding groups of different systems are arranged at different positions in a circumferential direction of a stator core. The winding groups of each system include: an excitation winding group consisting of a plurality of excitation windings, and being connected to corresponding one of excitation circuits; a first output winding group; and a second output winding group. Each of the teeth has corresponding one of the excitation windings wound therearound. When two of the excitation windings belonging to different systems and being arranged side by side is the circumferential direction of the stator core are defined as a first end excitation winding and a second end excitation winding, respectively, the first end excitation winding and the second end excitation winding are applied with excitation signals to generate magnetic fluxes in the same direction of radial directions of the stator core.
    Type: Application
    Filed: May 24, 2019
    Publication date: July 14, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroko IKEDA, Tatsuya MORI, Kenta MOTOYOSHI, Kodai OKAZAKI, Kenji IKEDA, Yosuke SUGINO, Seiji SAWADA, Kenta KUBO, Toshihiro MATSUNAGA
  • Publication number: 20220209291
    Abstract: A solid electrolyte material includes Li, Ca, Y, Gd, and X wherein X is at least one element selected from the group consisting of F, Cl, Br, and I. A battery uses the solid electrolyte material.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Inventors: TAKASHI KUBO, KENTA NAGAMINE, KEITA MIZUNO, TETSUYA ASANO, AKIHIRO SAKAI
  • Publication number: 20220181706
    Abstract: An electrode which is to be applied to a solid-state battery and including a collector layer and an active material layer disposed on the collector layer and including an active material showing a concentration distribution in a layer thickness direction which is, among the directions parallel to the layer thickness, a direction toward the side in contact with the collector layer, wherein the active material layer contains at least any one of a conductive auxiliary agent showing a decreasing concentration gradient in the layer thickness direction and a solid electrolyte showing an increasing concentration gradient in the layer thickness direction.
    Type: Application
    Filed: February 24, 2022
    Publication date: June 9, 2022
    Inventor: Kenta Kubo
  • Publication number: 20220166356
    Abstract: To provide a controller for rotary electric machine which can suppress the increase in the switching frequency by the voltage for estimation while reducing the estimation delay of the magnetic pole position (the rotational angle). A controller for rotary electric machine turns on and off switching devices which the inverter has and applies voltage to the winding, based on a comparison result between the voltage command and the carrier wave; generates the voltage command for estimation of a preliminarily set one period on a stationary coordinate system fixed to the winding; generates the carrier wave of the same one period as the one period of the voltage command for estimation; extracts the frequency component of the one period of the voltage command for estimation from the current detection value; and estimates a rotational angle based on the frequency component.
    Type: Application
    Filed: June 4, 2019
    Publication date: May 26, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Jun KITAGAWA, Tatsuya MORI, Isao KEZOBO, Seiji SAWADA, Kenta KUBO
  • Publication number: 20220103102
    Abstract: To provide a controller for motor which can reduce a torque ripple up to high frequency, without amplifying unnecessary noise and vibration. A controller for motor estimates an interlinkage flux based on the applied voltage and the detection value of current; estimates an output torque based on the detection value of current and the estimation value of interlinkage flux; extracts a pulsation component from the estimation value of output torque; calculates a voltage command correction value based on the extraction value of pulsation component; calculates a voltage command after superimposing by superimposing the voltage command correction value on the voltage command basic value; and applies voltage to winding based on the voltage command after superimposing.
    Type: Application
    Filed: May 30, 2019
    Publication date: March 31, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Isao KEZOBO, Masahiko ORII, Tatsuya MORI, Seiji SAWADA, Kenta KUBO
  • Publication number: 20220103110
    Abstract: A power conversion device is configured to acquire, from a current detector at a timing A, a first phase current detection value in a first phase being a phase corresponding to a phase voltage command to be compared to a first carrier wave signal, calculate a first phase current calculation value corresponding to the first phase based on an acquisition result, acquire, from the current detector at a timing B, a second phase current detection value in a second phase being a phase corresponding to a phase voltage command to be compared to a second carrier wave signal, and to calculate a second phase current calculation value corresponding to the second phase based on an acquisition result.
    Type: Application
    Filed: February 19, 2019
    Publication date: March 31, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Akira FURUKAWA, Kenta KUBO
  • Publication number: 20220085359
    Abstract: Provided is an active material including protruding portions protruding in a plurality of directions.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Inventors: Kenta Kubo, Hiroshi Taniuchi
  • Patent number: 11236817
    Abstract: A gear shift operation device for a vehicle to which a multiple-stage automatic transmission is mounted, is provided. By a control lever being manually operated in a range switchable mode, a range position is switched at least between a D-range where automatic transmission is performed and an R-range, and by the control lever being manually operated in a manual transmission mode, a gear change is performed. An operation reaction force when the control lever is manually operated is set larger when the gear change is performed in the manual transmission mode than when the range position is switched in the range switchable mode.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: February 1, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Hajime Oyama, Kenji Sasaki, Junichi Kubo, Hideyuki Nishi, Kenta Kubo, Yasuhiko Shinya, Takashi Hasegawa, Shigeo Yoshikawa
  • Publication number: 20220018646
    Abstract: Even using the redundant system resolver in which the magnetic interference between systems occurs, to provide an angle detection apparatus which can reduces the influence of the magnetic interference and can calculate the rotational angle with good accuracy, without performing synchronous control between systems in real time. An angle detection apparatus is provided with a resolver which has the first system windings and the second system windings in which magnetic interference occurs between systems; a first system removal processing unit that performs a second cycle component removal processing which removes component of the second cycle of the second system, to detection values of the first system winding output signals; and a first system angle calculation unit that calculates a first angle of rotor, based on the detection values of the first system winding output signals after the second cycle component removal processing.
    Type: Application
    Filed: January 25, 2019
    Publication date: January 20, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Toshihiro MATSUNAGA, Hiroko IKEDA, Seiji SAWADA, Kenta KUBO, Kenji IKEDA
  • Publication number: 20210108717
    Abstract: A gear shift operation device for a vehicle to which a multiple-stage automatic transmission is mounted, is provided. By a control lever being manually operated in a range switchable mode, a range position is switched at least between a D-range where automatic transmission is performed and an R-range, and by the control lever being manually operated in a manual transmission mode, a gear change is performed. An operation reaction force when the control lever is manually operated is set larger when the gear change is performed in the manual transmission mode than when the range position is switched in the range switchable mode.
    Type: Application
    Filed: September 23, 2020
    Publication date: April 15, 2021
    Inventors: Hajime Oyama, Kenji Sasaki, Junichi Kubo, Hideyuki Nishi, Kenta Kubo, Yasuhiko Shinya, Takashi Hasegawa, Shigeo Yoshikawa
  • Publication number: 20200368818
    Abstract: A method for manufacturing a material layer includes a first step S101 of arranging first particles P1 in a pattern on a base material 11 and a second step S102 of arranging second particles in regions in which the first particles P1 are not arranged on the base material 11. The second step S102 includes a step of rubbing bearing materials S2 that carry the second particles P2 against the base material 11 on which the first particles P1 are arranged.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Inventors: Kenta Kubo, Hiroshi Taniuchi