Patents by Inventor Kenta MAEDA

Kenta MAEDA 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: 20240134395
    Abstract: A management system of a work site includes: a workplace data acquisition unit that acquires workplace data set in a workplace where an unmanned haul vehicle travels; and a sprinkling area setting unit that sets, on the basis of the workplace data, a sprinkling area on which the unmanned sprinkler vehicle sprinkles water in the workplace.
    Type: Application
    Filed: January 20, 2022
    Publication date: April 25, 2024
    Applicant: Komatsu Ltd.
    Inventors: Misato Maeda, Takashi Hiranaka, Kenta Osagawa
  • Publication number: 20240097653
    Abstract: In a composite filter device, a first acoustic wave resonator includes a functional electrode on a first main surface of a first piezoelectric substrate, and a wiring electrode is on the first main surface and is not connected to a signal potential. A support is on the first main surface and surrounds the first acoustic wave resonator. A second piezoelectric substrate is on the support and includes a third main surface closer to the support than a fourth main surface. A second acoustic wave resonator includes a functional electrode on the third main surface. The second acoustic wave resonator is a parallel-arm resonator higher in resonant frequency than any other parallel-arm resonator or a series-arm resonator lower in resonant frequency than any other series-arm resonator. The second acoustic wave resonator and the wiring electrode overlap each other when viewed in plan.
    Type: Application
    Filed: September 14, 2023
    Publication date: March 21, 2024
    Inventors: Yasuhiro SHIMIZU, Sunao YAMAZAKI, Kenta MAEDA
  • Publication number: 20240072759
    Abstract: An acoustic wave device includes a first acoustic wave filter including a first piezoelectric substrate and first resonators on the first piezoelectric substrate, and a second acoustic wave filter including a second piezoelectric substrate and second resonators on the second piezoelectric substrate. The first and second resonators are opposed to each other with a gap therebetween. The first and second resonators each include a heat-generation resonator in which a heat generation range has a highest temperature at a time of signal application. The heat generation ranges of the heat-generation resonators do not overlap each other in plan view.
    Type: Application
    Filed: August 2, 2023
    Publication date: February 29, 2024
    Inventor: Kenta MAEDA
  • Publication number: 20240072763
    Abstract: An acoustic wave device includes a piezoelectric substrate, and a longitudinally coupled resonator on a main surface of the piezoelectric substrate and including an even number of four or more IDT electrodes. Of the even number of IDT electrodes, in a pair of outermost IDT electrodes, a number of electrode fingers of one IDT electrode is two.
    Type: Application
    Filed: August 2, 2023
    Publication date: February 29, 2024
    Inventor: Kenta MAEDA
  • Publication number: 20240068187
    Abstract: A sprinkling vehicle control system includes a travel control unit that switches a traveling direction of a sprinkling vehicle, and a sprinkling control unit that controls a first sprinkling spray provided at a first portion on one side in the traveling direction in the sprinkling vehicle. The sprinkling control unit controls the first sprinkling spray such that a sprinkling condition of the first sprinkling spray when the sprinkling vehicle travels to one side in the traveling direction is different from a sprinkling condition of the first sprinkling spray when the sprinkling vehicle travels to the other side in the traveling direction.
    Type: Application
    Filed: November 30, 2021
    Publication date: February 29, 2024
    Applicant: Komatsu Ltd.
    Inventors: Misato Maeda, Takashi Hiranaka, Kenta Osagawa
  • Publication number: 20240001910
    Abstract: A vehicle movement control device generates a target motion vector that falls within a desired controllable range in a motion space, and integrally controls a plurality of actuators to realize a vehicle movement defined by the target motion vector, thereby improving ride comfort and operation feeling. The vehicle movement control device that controls the plurality of actuators in accordance with a travel state, the vehicle movement control device including: a vehicle movement planning unit configured to generate a target motion vector based on input travel state information; an operation amount arbitration unit configured to calculate an operation amount of each actuator based on the target motion vector; and an actuator control unit configured to control each actuator based on the operation amount, in which the vehicle movement planning unit generates the target motion vector within a controllable range in a motion space acquired from the operation amount arbitration unit.
    Type: Application
    Filed: November 10, 2021
    Publication date: January 4, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Masaru YAMASAKI, Takahiro ITO, Kenta MAEDA, Shuji OHSHITA, Kentarou UENO
  • Publication number: 20230415775
    Abstract: A vehicle integrated-control device generates internal commands that supplement insufficient external commands in an environment where external commands are insufficient and that integrally controls each actuator to improve the operational feeling of the driver and occupant ride comfort.
    Type: Application
    Filed: November 10, 2021
    Publication date: December 28, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Kenta MAEDA, Masaru YAMASAKI, Takahiro ITO, Kentarou UENO, Shuji OHSHITA
  • Publication number: 20230347972
    Abstract: The present disclosure provides a steering control device capable of transmitting an appropriate reaction force by a driver via a steering wheel and improving the stability of a vehicle. Provided is a steering control device 100 for controlling a reaction force actuator 16 that generates a reaction force against an operation of a driver in a steering wheel 13 of a vehicle 10. The steering control device 100 increases the reaction force in a nonlinear region where a cornering force characteristic that is the relationship between the slip angle and the lateral force of tires 11 of the vehicle 10 becomes nonlinear, more than the reaction force in a linear region where the cornering force characteristic becomes linear.
    Type: Application
    Filed: December 8, 2020
    Publication date: November 2, 2023
    Inventors: Go SAKAYORI, Kenta MAEDA, Tomoaki FUJIBAYASHI, Hiroki SONODA
  • Patent number: 11731631
    Abstract: Provided are a vehicle motion control device, a method thereof, a program thereof, a system thereof in which it is adapted for traveling situation while an occurrence of an unstable behavior of a vehicle at the time of automatic lane change is suppressed, and a target trajectory generation device, a method thereof, a method thereof, a program thereof, and a system thereof. In a vehicle that can automatically control a lateral acceleration generated in the vehicle at the time of lane change, the lateral acceleration at the time of lane change is controlled such that an absolute value of a maximum lateral acceleration generated on a lateral acceleration generation phase (the secondary steering side) in a lateral direction opposite to the moving direction at the time of lane change is equal or more than an absolute value of a maximum lateral acceleration generated on a lateral acceleration generation phase (primary steering side) in the same direction as a lateral moving direction at the time of lane change.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: August 22, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Junya Takahashi, Kenta Maeda, Masamichi Imamura
  • Patent number: 11444598
    Abstract: An acoustic wave filter includes series arm resonators each including an IDT electrode on a piezoelectric substrate. Resonant frequencies of the series arm resonators are positioned within the pass band of the acoustic wave filter. The IDT electrode includes a pair of comb-shaped electrodes. Each of the comb-shaped electrodes includes electrode fingers and a busbar electrode. The electrode fingers extend in a direction intersecting a propagation direction of acoustic waves and are parallel with each other. One end of an electrode finger and one end of another electrode finger are connected with each other by the busbar electrode. The IDT electrode of the series arm resonator with the lowest anti-resonant frequency includes two or more withdrawal-weighted floating electrodes without any of the electrode fingers of one of the comb-shaped electrodes interposed therebetween.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: September 13, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kenta Maeda
  • Publication number: 20220242449
    Abstract: The purpose of the present invention is to provide a vehicle control system that can achieve highly comfortable autonomous driving according to the behavior of an occupant by changing a control mode of the autonomous driving according to the behavior of the occupant.
    Type: Application
    Filed: April 17, 2020
    Publication date: August 4, 2022
    Inventors: Go SAKAYORI, Junya TAKAHASHI, Kenta MAEDA, Shinya KASAI
  • Patent number: 11383698
    Abstract: Provided are: a device and a method for controlling vehicle movement, with which it is possible to suppress causing uncomfortableness to vehicle occupants and causing unstable behavior during turning by automatic travel control; and a device and a method for generating a target course. In a vehicle capable of automatically controlling lateral acceleration occurring in the vehicle, the present invention controls the acceleration occurring in the vehicle such that jerk, which is the change over time of acceleration, becomes the greatest in a region where the lateral acceleration that occurs upon entering a curve is equal to or less than half the acceleration during normal turning, and the jerk decreases as the acceleration increases.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: July 12, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Junya Takahashi, Yuki Akiyama, Kenta Maeda, Naoki Hiraga, Toshiyuki Innami
  • Patent number: 11294376
    Abstract: A moving body control device expands an autonomously movable region, appropriately determines reliability of the expanded region, and realizes stable autonomous movement at low cost. The device includes: an external map acquisition unit acquiring an external map; a sensor acquiring external environment information around the moving body; a movement information acquisition unit acquiring movement information indicating a position or an advancing angle of the moving body; an autonomous movement range management unit generating an autonomous movement map based on the external information or the movement information; and a control unit controlling movement of the moving body based on the autonomous movement map, the external environment information, or the movement information, the autonomous movement range management unit comparing the autonomous movement map with the external map, the control unit controlling the moving body based on a comparison result in the autonomous movement range management unit.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 5, 2022
    Assignee: HITACHI, LTD.
    Inventors: Kenta Maeda, Junya Takahashi
  • Patent number: 11187539
    Abstract: A travel control device includes an operation acquiring unit for acquiring an operation by a driver of a host moving body; an outside-world information acquiring unit for acquiring outside-world information of the periphery of the host moving body; a moving-body information acquiring unit for acquiring moving-body information relating to a travel state of the host moving body; a travelable-range management unit for managing the range travelable by the moving body; and a control unit for controlling travel by the moving body on the basis of the operation acquired by the operation acquiring unit, the outside-world information acquired by the outside-world information acquiring unit, the moving-body information acquired by the moving-body information acquiring unit, and the travelable range managed by the travelable-range management unit, the travelable-range management unit including a travelable-range enlargement unit for enlarging the travelable range, and a travelable-range evaluation unit for evaluating the
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: November 30, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kenta Maeda, Junya Takahashi
  • Publication number: 20210362720
    Abstract: Provided are a vehicle motion control device, a method thereof, a program thereof, a system thereof in which it is adapted for traveling situation while an occurrence of an unstable behavior of a vehicle at the time of automatic lane change is suppressed, and a target trajectory generation device, a method thereof, a method thereof, a program thereof, and a system thereof. In a vehicle that can automatically control a lateral acceleration generated in the vehicle at the time of lane change, the lateral acceleration at the time of lane change is controlled such that an absolute value of a maximum lateral acceleration generated on a lateral acceleration generation phase (the secondary steering side) in a lateral direction opposite to the moving direction at the time of lane change is equal or more than an absolute value of a maximum lateral acceleration generated on a lateral acceleration generation phase (primary steering side) in the same direction as a lateral moving direction at the time of lane change.
    Type: Application
    Filed: October 9, 2018
    Publication date: November 25, 2021
    Inventors: Junya TAKAHASHI, Kenta MAEDA, Masamichi IMAMURA
  • Publication number: 20210197808
    Abstract: A control system for a moving body that can improve the accuracy of determining that autonomous movement cannot be continued, and realize a smoother transition to remote control. For this reason, there is provided a moving body control system which includes a moving body control device that is mounted on a moving body capable of autonomous movement, and a control device that controls the moving body from a remote place. The moving body control device includes an external information acquisition unit to acquire external information of the moving body, a movement information acquisition unit to acquire movement information of the moving body, a control unit to predict a future state of the moving body based on the external information and the movement information, and a moving body-side communication unit to communicate with the control device.
    Type: Application
    Filed: October 20, 2017
    Publication date: July 1, 2021
    Applicant: Hitachi, Ltd.
    Inventors: Kenta MAEDA, Junya TAKAHASHI
  • Patent number: 10930152
    Abstract: The present invention increases detectable areas and increases vehicle speed while ensuring safety, thereby enhancing vehicle utility for drivers.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: February 23, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kenta Maeda, Junya Takahashi
  • Publication number: 20200341470
    Abstract: A moving body control device expands an autonomously movable region, appropriately determines reliability of the expanded region, and realizes stable autonomous movement at low cost. The device includes: an external map acquisition unit acquiring an external map; a sensor acquiring external environment information around the moving body; a movement information acquisition unit acquiring movement information indicating a position or an advancing angle of the moving body; an autonomous movement range management unit generating an autonomous movement map based on the external information or the movement information; and a control unit controlling movement of the moving body based on the autonomous movement map, the external environment information, or the movement information, the autonomous movement range management unit comparing the autonomous movement map with the external map, the control unit controlling the moving body based on a comparison result in the autonomous movement range management unit.
    Type: Application
    Filed: March 16, 2018
    Publication date: October 29, 2020
    Applicant: HITACHI, LTD.
    Inventors: Kenta MAEDA, Junya TAKAHASHI
  • Publication number: 20200244247
    Abstract: An acoustic wave filter includes series arm resonators each including an IDT electrode on a piezoelectric substrate. Resonant frequencies of the series arm resonators are positioned within the pass band of the acoustic wave filter. The IDT electrode includes a pair of comb-shaped electrodes. Each of the comb-shaped electrodes includes electrode fingers and a busbar electrode. The electrode fingers extend in a direction intersecting a propagation direction of acoustic waves and are parallel with each other. One end of an electrode finger and one end of another electrode finger are connected with each other by the busbar electrode. The IDT electrode of the series arm resonator with the lowest anti-resonant frequency includes two or more withdrawal-weighted floating electrodes without any of the electrode fingers of one of the comb-shaped electrodes interposed therebetween.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 30, 2020
    Inventor: Kenta MAEDA
  • Publication number: 20200164870
    Abstract: Provided are: a device and a method for controlling vehicle movement, with which it is possible to suppress causing uncomfortableness to vehicle occupants and causing unstable behavior during turning by automatic travel control; and a device and a method for generating a target course. In a vehicle capable of automatically controlling lateral acceleration occurring in the vehicle, the present invention controls the acceleration occurring in the vehicle such that jerk, which is the change over time of acceleration, becomes the greatest in a region where the lateral acceleration that occurs upon entering a curve is equal to or less than half the acceleration during normal turning, and the jerk decreases as the acceleration increases.
    Type: Application
    Filed: July 26, 2018
    Publication date: May 28, 2020
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Junya TAKAHASHI, Yuki AKIYAMA, Kenta MAEDA, Naoki HIRAGA, Toshiyuki INNAMI