Patents by Inventor Eisuke Takahashi

Eisuke Takahashi 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: 20220149663
    Abstract: In a dynamic wireless power transfer system, a power transmission coil is provided in a road. A power transmission circuit supplies electric power to the power transmission coil. A power reception coil is provided in a vehicle. A power reception circuit is connected to the power reception coil. A relay circuit is provided in a tire of the vehicle. The relay circuit includes at least two relay coils that are connected in series. The relay circuit transfers electric power from the power transmission coil to the power reception coil by one relay coil of the two relay coils opposing the power transmission coil and the other relay coil opposing the power reception coil. A resonance frequency of the relay circuit is a frequency that is within a fixed range that is centered on an applied frequency of an alternating-current voltage that is applied to the power transmission coil.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Applicant: DENSO CORPORATION
    Inventors: Hayato SUMIYA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Masaya TAKAHASHI
  • Publication number: 20220149664
    Abstract: A contactless power feeding device that supplies electric power to a power receiving device without contact includes: a power transmitting circuit that transmits alternating-current power; and a power transmitting resonator including a power transmitting coil. The input impedance of the power transmitting resonator is set low in a facing state in which a power receiving coil included in the power receiving device faces the power transmitting coil, and the input impedance of the power transmitting resonator is set high in a non-facing state in which the power receiving coil does not face the power transmitting coil.
    Type: Application
    Filed: January 25, 2022
    Publication date: May 12, 2022
    Applicant: DENSO CORPORATION
    Inventors: Masaya TAKAHASHI, Eisuke TAKAHASHI, Hayato SUMIYA, Nobuhisa YAMAGUCHI
  • Publication number: 20220149666
    Abstract: A dynamic wireless power transfer system includes a power transmission coil, a power transmission circuit, a power reception coil, a power reception circuit, and a relay circuit. The power transmission coil is provided in a road. The power transmission circuit supplies electric power to the power transmission coil. The power reception coil is provided in a vehicle. The power reception circuit is connected to the power reception coil. The relay circuit transfers electric power between the power transmission coil and the power reception coil in a contactless manner.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Applicants: DENSO CORPORATION, The University of Tokyo
    Inventors: Hayato SUMIYA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Masaya TAKAHASHI, Hiroshi FUJIMOTO, Osamu SHIMIZU
  • Publication number: 20220072965
    Abstract: In a moving-object power supply system, a control unit selects, as a power transmission segment, one of segments included in at least one power transmission section. The control unit supplies, through a power supply circuit, power to the power transmission segment to thereby generate a magnetic field through a power transmission coil of the power transmission segment. The control unit determines, based on an ascertained first electrical characteristic of the power transmission segment and an ascertained second electrical characteristic of at least one power non-transmission segment, whether there is a malfunction in each of the power transmission segment and the at least one power non-transmission segment.
    Type: Application
    Filed: November 17, 2021
    Publication date: March 10, 2022
    Applicant: DENSO CORPORATION
    Inventors: Kouji MAZAKI, Nobuhisa YAMAGUCHI, Eisuke TAKAHASHI, Mitsuru SHIBANUMA, Shinpei TAKITA, Masaya TAKAHASHI, Hayato SUMIYA, Masaki KANESAKI, Takuya KIGUCHI, Kazuhiro UDA, Yuusei NAKAYASHIKI
  • Publication number: 20220032778
    Abstract: In an in-motion power supply system with a plurality of power supply segments to supply power to a vehicle, a vehicle position detection unit detects a position of the vehicle relative to each segment. An electrical characteristic acquisition unit acquires electrical characteristics in the segment involved in power transfer, and an abnormality determination unit uses the electrical characteristics to determine whether there is an abnormality in the segment involved in power transfer.
    Type: Application
    Filed: October 19, 2021
    Publication date: February 3, 2022
    Applicant: DENSO CORPORATION
    Inventors: Masaki KANESAKI, Mitsuru SHIBANUMA, Hayato SUMIYA, Takuya KIGUCHI, Eisuke TAKAHASHI, Shinpei TAKITA, Masaya TAKAHASHI, Kazuhiro UDA, Yuusei NAKAYASHIKI, Kazuyoshi OBAYASHI, Nobuhisa YAMAGUCHI
  • Publication number: 20220037928
    Abstract: A contactless power supply device that supplies electric power to a vehicle in a contactless manner, includes: a power transmission resonance circuit; a power source circuit supplying direct-current power; and a power transmission circuit converting the direct-current power of the power source circuit into alternating-current power and supplying alternating-current power to the power transmission resonance circuit. The power transmission circuit includes: an inverter circuit converting the direct-current power of the power source circuit into alternating-current power; and a power transmission-side immittance conversion circuit adjusting the alternating-current power of the inverter circuit and supplies the adjusted alternating-current power to the power transmission resonance circuit.
    Type: Application
    Filed: October 18, 2021
    Publication date: February 3, 2022
    Applicant: DENSO CORPORATION
    Inventors: Masaya TAKAHASHI, Yuusei NAKAYASHIKI, Eisuke TAKAHASHI, Masaki KANESAKI, Kazuhiro UDA, Nobuhisa YAMAGUCHI
  • Publication number: 20220001753
    Abstract: A system for power feeding during traveling includes a coil for power transmission, a power supply unit which supplies power to the coils, at least one shielding member which shields an electromagnetic field of the coil, and a hole provided to the shielding members.
    Type: Application
    Filed: September 15, 2021
    Publication date: January 6, 2022
    Applicant: DENSO CORPORATION
    Inventors: Eisuke TAKAHASHI, Hayato SUMIYA, Takuya KIGUCHI, Nobuhisa YAMAGUCHI
  • Publication number: 20210391757
    Abstract: A dynamic wireless power transfer system performs, through a plurality of primary coils installed along a traveling direction of a road and a secondary coil mounted in a vehicle, power transfer to the vehicle while the vehicle is traveling. The secondary coil is an M-phase coil including M coils, M denoting an integer which is two or higher. The M coils each include a coil end extending along a front-rear direction of the vehicle and a main coil portion extending along a width direction of the vehicle, the M coils each being configured such that a magnetic resistance of a magnetic path where a magnetic flux of the coil end passes is higher than a magnetic resistance of a magnetic path where a magnetic flux of the main coil portion passes.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Applicant: DENSO CORPORATION
    Inventors: Takuya KIGUCHI, Nobuhisa YAMAGUCHI, Eisuke TAKAHASHI, Hayato SUMIYA, Tomoyuki FUJIKAWA, Koji MAZAKI, Shimpei TAKITA, Masaki KANESAKI, Masaya TAKAHASHI, Kazuhiro UDA, Yusei NAKAYASHIKI, Mitsuru SHIBANUMA, Kazuyoshi OBAYASHI
  • Publication number: 20210336487
    Abstract: A power receiving device installable to a vehicle and included in a contactless power supply system for supplying power in a contactless manner between the power receiving device and a power transmission device installable on a road includes: polyphase receiver coils having at least three phases; an iron core that provides magnetic flux coupling between the receiver coils for the respective phases; and receiver capacitors connected on a one-to-one basis to the receiver coils for the respective phases. The receiver coils for the respective phases are arranged to have inter-coil distances between the receiver coils, with at least one of the inter-coil distances different from the other inter-coil distances. The receiver capacitors have capacitances set based on the inter-coil distances.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Applicant: DENSO CORPORATION
    Inventors: Norihito KIMURA, Eisuke TAKAHASHI, Masaki KANESAKI, Nobuhisa YAMAGUCHI
  • Publication number: 20210143684
    Abstract: A contactless power feeding apparatus includes a plurality of primary coils mounted on a road and a power feed controller which uses a portion of the primary coils as a power transmitting coil to achieve delivery of electrical power from the power transmitting coil to a secondary coil mounted in a vehicle. The power feed controller uses a selected primary coil that is one of the primary coils other than the power transmitting coil to decrease a leakage of magnetic flux arising from excitation of the power transmitting coil. Instead of the selected primary coil, the secondary coil may be used to reduce the leakage of magnetic flux.
    Type: Application
    Filed: January 15, 2021
    Publication date: May 13, 2021
    Applicant: DENSO CORPORATION
    Inventors: Hayato SUMIYA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Kazuyoshi OBAYASHI, Shimpei TAKITA, Koji MAZAKI, Mitsuru SHIBANUMA, Masaki KANESAKI, Takuya KIGUCHI, Kazuhiro UDA
  • Publication number: 20210114465
    Abstract: A contactless power supply system is provided for supplying electric power to a vehicle in a contactless manner during traveling of the vehicle. The contactless power supply system includes a plurality of primary coils installed along a traveling direction in a road and a secondary coil mounted to the vehicle. Each of the primary coils is a single-phase coil with the secondary coil being a multi-phase coil, or is a multi-phase coil with the secondary coil being a single-phase coil.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: DENSO CORPORATION
    Inventors: Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Koji MAZAKI, Shimpei TAKITA, Hayato SUMIYA, Masaki KANESAKI, Takuya KIGUCHI, Kazuhiro UDA, Mitsuru SHIBANUMA, Kazuyoshi OBAYASHI, Tomoyuki FUJIKAWA, Masaya TAKAHASHI, Yusei NAKAYASHIKI
  • Publication number: 20210073437
    Abstract: A design method includes: acquiring time-series data of a set of a sample um of a control input u and a sample ym of a control output y; calculating, based on the time-series data, a value ?* of a parameter ? that minimizes a value of an evaluation function J(?,?,um,ym) in a state where ? is set to an initial value ?ini corresponding to a target response yr; calculating, based on the time-series data, a value ?* of ? that minimizes the value of J(?,?,um,ym) in a state where ? is set to ?*; and designing the control system based on ?ini and ?* and ?*. A feedforward controller of the control system receives input of the desired value r and calculates r*=G(?ini,?*)r following a transfer function G(?ini,?*). The feedback controller calculates u=C(?*)(r*?y) following C(?=?*) based on a deviation r*?y. The transfer function G(?ini,?*) is a transfer function Td(?ini)/Td(?*).
    Type: Application
    Filed: September 8, 2020
    Publication date: March 11, 2021
    Inventor: Eisuke TAKAHASHI
  • Patent number: 10908565
    Abstract: A calculation method includes: acquiring one or more sets of time-series data including a sample u0 of control input u, a sample ym0 of first output ym, and a sample yf0 of second output yf; and calculating a value ?* based on the time-series data, a transfer function C(?), and a model function Td that defines a normative value of the second output yf relative to a desired value r. The value ?* is a value of parameter ? that minimizes a control error and that is to be set to a control system. The control error is one of: an error between yf0 and a normative value of yf, the normative value of yf being calculated from C(?), Td, u0, and ym0; and an error between u0 and a normative value of the control input u, the normative value of u being calculated from C(?), Td, ym0, and yf0.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: February 2, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Eisuke Takahashi
  • Patent number: 10885144
    Abstract: There is provided a method of updating a setting value of a variable parameter, the method including: obtaining a time-series data of control input and a time-series data of control output observed in control with a controller; calculating a value of the variable parameter which minimizes an output value of an evaluation function based on the obtained time-series data of the control input and the control output; and updating the setting value of the variable parameter to the calculated value of the variable parameter. The evaluation function includes a first function part in which a first norm or a second norm changes depending on the value of the variable parameter, and a second function part of which specific frequency band has an amount, by which the output value of the evaluation function is increased, larger than that of any other frequency band.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: January 5, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Eisuke Takahashi
  • Patent number: 10862336
    Abstract: A non-contact power supply device includes: a power transmission coil that generates a magnetic flux by an alternating current; a power transmission circuit that supplies the alternating current to the power transmission coil; a power transmission side control circuit that controls the power transmission circuit; a power receiving coil that generates an alternating current by interlinking the magnetic flux generated in the power transmission coil; and a power receiving circuit that converts the alternating current supplied from the power receiving coil into a direct current, and supplies the direct current to the power supply target. The power transmission side control circuit obtains a voltage vector target value based on a relationship between a voltage vector and a current vector, and controls the power transmission circuit to set the voltage vector of the alternating current output from the power transmission circuit to be the voltage vector target value.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kazuyoshi Obayashi, Akira Kamiya, Eisuke Takahashi
  • Patent number: 10807547
    Abstract: A power supply apparatus configures an on-board power supply system that includes a first battery and a second battery. A first module and a first detecting unit are electrically connected to the first battery as a first electrical load. A second module and a second detecting unit are electrically connected to the second battery as a second electrical load. The first module and the second module configure an electric power steering apparatus. A starter is electrically connected to the first battery. The first battery and the second battery are electrically connected by a connection path. A resistor unit is provided on the connection path.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: October 20, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kazuyoshi Obayashi, Eisuke Takahashi
  • Publication number: 20200174431
    Abstract: An aspect of this specification discloses a method of, based on a control input to a controlled object and on a control output from the controlled object, updating a value of a parameter in an estimator configured to estimate external force that acts on the controlled object. The method includes: determining whether the controlled object is in a particular state in which external force that acts on the controlled object is known; during a period in which it is determined that the controlled object is in the particular state, calculating, as a learning value, the value of the parameter that reduces an error between the known external force and estimated external force, the estimated external force being estimated by the estimator based on the control input and the control output; and updating the value of the parameter in the estimator with the calculated learning value.
    Type: Application
    Filed: October 30, 2019
    Publication date: June 4, 2020
    Inventor: Eisuke TAKAHASHI
  • Publication number: 20200019586
    Abstract: There is provided a method of updating a setting value of a variable parameter, the method including: obtaining a time-series data of control input and a time-series data of control output observed in control with a controller; calculating a value of the variable parameter which minimizes an output value of an evaluation function based on the obtained time-series data of the control input and the control output; and updating the setting value of the variable parameter to the calculated value of the variable parameter. The evaluation function includes a first function part in which a first norm or a second norm changes depending on the value of the variable parameter, and a second function part of which specific frequency band has an amount, by which the output value of the evaluation function is increased, larger than that of any other frequency band.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Inventor: Eisuke Takahashi
  • Publication number: 20200004211
    Abstract: A calculation method includes: acquiring one or more sets of time-series data including a sample u0 of control input u, a sample ym0 of first output ym, and a sample yf0 of second output yf; and calculating a value ?* based on the time-series data, a transfer function C(?), and a model function Td that defines a normative value of the second output yf relative to a desired value r. The value ?* is a value of parameter ? that minimizes a control error and that is to be set to a control system. The control error is one of: an error between yf0 and a normative value of yf, the normative value of yf being calculated from C(?), Td, u0, and ym0; and an error between u0 and a normative value of the control input u, the normative value of u being calculated from C(?), Td, ym0, and yf0.
    Type: Application
    Filed: June 13, 2019
    Publication date: January 2, 2020
    Inventor: Eisuke TAKAHASHI
  • Patent number: 10467323
    Abstract: There is provided a method of updating a setting value of a variable parameter, the method including: obtaining a time-series data of control input and a time-series data of control output observed in control with a controller; calculating a value of the variable parameter which minimizes an output value of an evaluation function based on the obtained time-series data of the control input and the control output; and updating the setting value of the variable parameter to the calculated value of the variable parameter. The evaluation function includes a first function part in which a first norm or a second norm changes depending on the value of the variable parameter, and a second function part of which specific frequency band has an amount, by which the output value of the evaluation function is increased, larger than that of any other frequency band.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 5, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Eisuke Takahashi