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: 20230144803
    Abstract: A non-limiting example game system includes a main body apparatus, and the main body apparatus performs a minigame in a game application. In a ghost battle, a player plays a minigame to battle against a ghost. If a battle against a worldwide ghost is selected, it is determined whether a use mode of the game system is a TV mode that a touch operation cannot be performed. When the use mode is not the TV mode, it is further determined whether a touch operation is performed in a minigame immediately before. When the use mode is the TV mode and no touch operation is performed in the minigame immediately before, ghosts that are operated by a controller not operating a touch panel are selected, and a ghost to play a battle is selected out of the ghosts.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 11, 2023
    Inventors: Kenta KUBO, Koichi KAWAMOTO
  • Publication number: 20230125647
    Abstract: A resolver body including a rotor having Nx (Nx is a natural number) salient poles, a stator facing the rotor and having Ns (Ns is an integer equal to or larger than 3) teeth arranged in a circumferential direction, and an excitation winding and two phases of output windings wound on each tooth; and an excitation circuit configured to apply voltage to the excitation winding. The excitation winding and the two phases of output windings wound on each of Nsm (Nsm is an integer equal to or larger than 2) teeth among the Ns teeth are set to be of a main system. The excitation winding and the two phases of output windings wound on each of Ns-Nsm teeth are set to be of a sub-system. The number Nsm of the teeth corresponding to the main system is larger than the number Ns-Nsm of the teeth corresponding to the sub-system.
    Type: Application
    Filed: April 9, 2020
    Publication date: April 27, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroko IKEDA, Shohei FUJIKURA, Tatsuya MORI, Kenji IKEDA, Kenta KUBO, Toshihiro MATSUNAGA
  • Publication number: 20230112554
    Abstract: To provide an abnormality detection apparatus for resolver which can determine the abnormality of at least the first system, even if the period of the excitation AC voltage of the first system and the period of the excitation AC voltage of the second system are different periods, and the magnetic interference between systems occurs. An abnormality detection apparatus for resolver applies an AC voltage of a first period to a first system excitation winding; applies an AC voltage of a second period different from the first period to a second system excitation winding; calculates DC values of first system two output signals by performing a DC extraction processing; and determines abnormality of first system based on whether or not the DC values of first system two output signals are within a normal range.
    Type: Application
    Filed: February 26, 2020
    Publication date: April 13, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Hiroko IKEDA, Toshihiro MATSUNAGA, Kenji IKEDA, Kenta KUBO
  • Publication number: 20230078128
    Abstract: To solve a problem that the accuracy of angle detection deteriorates owing to noise voltage generated by eccentricity or variation in shape among rotors according to the number of magnetic poles of a rotor core of a multiple-system rotation sensor, the number S of magnetic poles of a stator core is, with the number R of the magnetic poles of the rotor core and the number N (N is a natural number equal to or larger than 2) of systems for stator windings, in a relationship of S=nRN (n is a natural number), system windings of each system are wound so as to be divided for every R magnetic poles among the S magnetic poles of the stator core, and a winding arrangement of the system windings of each system is made so as to achieve R-times rotational symmetry about a rotor rotation axis.
    Type: Application
    Filed: April 9, 2020
    Publication date: March 16, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shohei FUJIKURA, Hiroko IKEDA, Tatsuya MORI, Kenji IKEDA, Kenta KUBO, Toshihiro MATSUNAGA
  • Publication number: 20230055461
    Abstract: To provide an abnormality detection apparatus for resolver which can determine the abnormality of at least the first system, even if the period of the excitation AC voltage of the first system and the period of the excitation AC voltage of the second system are different periods, and the magnetic interference between systems occurs. An abnormality detection apparatus for resolver applies an AC voltage of a first period to a first system excitation winding; applies an AC voltage of a second period different from the first period to a second system excitation winding; calculates a first system square sum which is a sum of square values of the detection values of output signals of first system two output windings after the second period component reduction processing: and determines abnormality of first system based on whether or not the first system square sum is within a normal range of first system.
    Type: Application
    Filed: February 26, 2020
    Publication date: February 23, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Hiroko IKEDA, Toshihiro MATSUNAGA, Kenji IKEDA, Kenta KUBO
  • Publication number: 20230048207
    Abstract: To provide a rotary electric machine apparatus which can perform current control which reduces a torque ripple component effectively, using a rotary electric machine in which the permanent magnet of the rotor has the skew structure which shifts the magnetic pole position in the circumferential direction at each position in the axial direction. When defining, as the current vector of most advanced phase, a current vector of current command values calculated on the dq-axis rotating coordinate system of most advanced phase, and defining, as the current vector of middle phase, a current vector of current command values calculated on the dq-axis rotating coordinate system of middle phase, the rotary electric machine apparatus brings a controlling current vector close to the current vector of most advanced phase from the current vector of middle phase, as the winding currents increase.
    Type: Application
    Filed: March 2, 2020
    Publication date: February 16, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Kenta KUBO, Yu HIROTANI
  • 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
  • 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: 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: 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: 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