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).
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Publication number: 20250046527Abstract: An electrolytic capacitor in which the transpiration of the electrolytic solution is suppressed even under the high-temperature environment is provided. The electrolytic capacitor comprising: a capacitor element having anode foil, cathode foil, electrolytic solution, and a solid electrolyte layer; a casing housing the capacitor element therein; and a sealing body sealing the casing, in which the sealing body includes butyl rubber, and the electrolytic solution includes glycerin, diglycerin, or both of 60 wt % or more relative to the solvent in the electrolytic solution.Type: ApplicationFiled: September 22, 2022Publication date: February 6, 2025Applicant: Nippon Chemi-Con CorporationInventors: Kenta SATO, Hideaki TAKAHASHI, Tetsuo MAEDA
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Publication number: 20250020231Abstract: A manifold includes: a valve configured to control a flow of fluid; and a housing having, in an internal space, a plurality of flow path chambers which is partitioned by a partition wall and through which the fluid flows. The housing includes a joining portion where an upper housing having a first opening opened downward and a lower housing having a second opening opened upward are joined by thermally welding the first opening and the second opening, and the joining portion is disposed above or below a center of the housing in an upper-lower direction.Type: ApplicationFiled: July 1, 2024Publication date: January 16, 2025Applicant: AISIN CORPORATIONInventors: Masato ISHII, Tetsuya HISAMATSU, Kenta ASAI, Michitaka MAEDA, Kiyoshi TAJIMA, Kenichi KOMURO, Koji YAMADA, Akira KURIMOTO, Hideto YANO
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Publication number: 20240367640Abstract: A vehicle integrated control device improves ride comfort and prevents the onset of motion sickness. The vehicle integrated control device acquires a target momentum of a control axis related to a driving task of the vehicle and generates a first motion parameter and a second motion parameter different from the first motion parameter that is based on the first motion parameter to optimize a sensitivity index. A limit generation unit generates a motion limit amount of the second motion parameter based on the first motion parameter and an operation range of an actuator, a final target generation unit that corrects the second motion parameter based on the motion limit amount, and an operation amount assignment unit that determines an operation amount of an actuator based on the first motion parameter and the second motion parameter corrected by the final target generation unit.Type: ApplicationFiled: April 26, 2022Publication date: November 7, 2024Inventors: Kenta MAEDA, Masaru YAMASAKI, Kentarou UENO, Shuji OHSHITA
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Patent number: 12110072Abstract: 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: GrantFiled: December 8, 2020Date of Patent: October 8, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Go Sakayori, Kenta Maeda, Tomoaki Fujibayashi, Hiroki Sonoda
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Publication number: 20240308579Abstract: A steer-by-wire control device according to the present invention includes a control device that controls a first motor that operates a steering wheel of a vehicle and a second motor that controls steering operation of a wheel. Before making a transition to an automatic driving mode of the vehicle, the control device applies input torque to the steering wheel by the first motor in a forward rotation direction and a backward rotation direction of rotation directions of the first motor, acquires behavior information of the steering wheel obtained by application of the input torque, and determines whether or not to estimate a control parameter of the steering wheel based on the behavior information. The behavior information includes at least one of a value of a rotation angle of a steering wheel and a value obtained by time-differentiating a rotation angle.Type: ApplicationFiled: June 1, 2022Publication date: September 19, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Shunsuke ARITOMI, Tadaharu YOKOTA, Yasuhito NAKAKUKI, Atsushi HIRATA, Takahiro ITO, Kenta MAEDA
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Patent number: 12077184Abstract: 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: GrantFiled: April 17, 2020Date of Patent: September 3, 2024Assignee: Hitachi, Ltd.Inventors: Go Sakayori, Junya Takahashi, Kenta Maeda, Shinya Kasai
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Publication number: 20240278772Abstract: A vehicle motion control device includes: an actuator characteristic change estimation unit configured to estimate a characteristic change of an actuator at a future time from a current time; a controllable range estimation unit configured to calculate a controllable range of a vehicle motion from a characteristic change calculated by the actuator characteristic change estimation unit, a target track of a vehicle, and a current vehicle state; a vehicle motion planning unit configured to create a motion plan within a controllable range calculated by the controllable range estimation unit; an evaluation value calculation unit configured to calculate an evaluation value based on a motion plan created by the vehicle motion planning unit; and a determination unit configured to determine whether or not an evaluation value calculated by the evaluation value calculation unit is minimum.Type: ApplicationFiled: May 18, 2022Publication date: August 22, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Masaru YAMASAKI, Kenta MAEDA, Shuji OHSHITA, Kentarou UENO
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Publication number: 20240262417Abstract: A control device method for steer by wire, the control device including a first motor controlling steering via an FBA and a second motor controlling a steering angle of a wheel via an RWA and being capable of bidirectionally controlling the first motor and the second motor includes a base SAT that obtains a reference torque based on an angle of the first motor and a vehicle speed, and a rack force estimation portion that estimates rack force as a reaction force based on a steering angle of a wheel and an RWA. A first control mode controls a reference torque of the first motor and a second control mode controls the first motor based on a reaction force estimation by the rack force estimation portion, the first and second control modes are switched based on output of the base SAT and output of the rack force estimation portion.Type: ApplicationFiled: May 10, 2022Publication date: August 8, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Chung Kim TANG, Kenta MAEDA, Huajun LIU, Atsushi HIRATA, Yasuhito NAKAKUKI
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Publication number: 20240097653Abstract: 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: ApplicationFiled: September 14, 2023Publication date: March 21, 2024Inventors: Yasuhiro SHIMIZU, Sunao YAMAZAKI, Kenta MAEDA
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Publication number: 20240072763Abstract: 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: ApplicationFiled: August 2, 2023Publication date: February 29, 2024Inventor: Kenta MAEDA
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Publication number: 20240072759Abstract: 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: ApplicationFiled: August 2, 2023Publication date: February 29, 2024Inventor: Kenta MAEDA
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Publication number: 20240001910Abstract: 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: ApplicationFiled: November 10, 2021Publication date: January 4, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Masaru YAMASAKI, Takahiro ITO, Kenta MAEDA, Shuji OHSHITA, Kentarou UENO
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Publication number: 20230415775Abstract: 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: ApplicationFiled: November 10, 2021Publication date: December 28, 2023Applicant: Hitachi Astemo, Ltd.Inventors: Kenta MAEDA, Masaru YAMASAKI, Takahiro ITO, Kentarou UENO, Shuji OHSHITA
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Publication number: 20230347972Abstract: 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: ApplicationFiled: December 8, 2020Publication date: November 2, 2023Inventors: Go SAKAYORI, Kenta MAEDA, Tomoaki FUJIBAYASHI, Hiroki SONODA
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Patent number: 11731631Abstract: 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: GrantFiled: October 9, 2018Date of Patent: August 22, 2023Assignee: Hitachi Astemo, Ltd.Inventors: Junya Takahashi, Kenta Maeda, Masamichi Imamura
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Patent number: 11444598Abstract: 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: GrantFiled: January 10, 2020Date of Patent: September 13, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Kenta Maeda
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Publication number: 20220242449Abstract: 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: ApplicationFiled: April 17, 2020Publication date: August 4, 2022Inventors: Go SAKAYORI, Junya TAKAHASHI, Kenta MAEDA, Shinya KASAI
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Patent number: 11383698Abstract: 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: GrantFiled: July 26, 2018Date of Patent: July 12, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Junya Takahashi, Yuki Akiyama, Kenta Maeda, Naoki Hiraga, Toshiyuki Innami
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Patent number: 11294376Abstract: 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: GrantFiled: March 16, 2018Date of Patent: April 5, 2022Assignee: HITACHI, LTD.Inventors: Kenta Maeda, Junya Takahashi
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Patent number: 11187539Abstract: 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 theType: GrantFiled: January 17, 2017Date of Patent: November 30, 2021Assignee: HITACHI, LTD.Inventors: Kenta Maeda, Junya Takahashi