Patents by Inventor Keisuke Takeuchi
Keisuke Takeuchi 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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Patent number: 12539856Abstract: An object of the present invention is to provide a vehicle control device capable of improving ride comfort of a driver. A lane change detection unit 205 of a vehicle control device 200 determines a possibility of cut-in of an adjacent vehicle immediately in front of an own vehicle on the basis of an adjacent vehicle relationship value (for example, a relative speed between the own vehicle and the adjacent vehicle) in an advancing direction. An acceleration/deceleration control unit 206 corrects acceleration/deceleration of the own vehicle on the basis of the possibility of the cut-in determined on the basis of the adjacent vehicle relationship value in the advancing direction.Type: GrantFiled: February 28, 2022Date of Patent: February 3, 2026Inventors: Takayuki Saito, Masashi Seimiya, Taku Takahama, Keisuke Takeuchi, Yuta Tsurumoto, Seiya Ishii
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Publication number: 20250364856Abstract: The present invention achieves a more lightweight rotor of a rotating electrical machine, and reduces the magnetic resistance of the q-axis while reducing the amount of rotor deformation during high-speed rotation. A plurality of magnet insertion holes 126a-126c of a rotator are located line-symmetrically about the d-axis, which is the magnetic pole central axis. On the inner peripheral side of the magnet insertion holes 126a, 126c close to the q-axis, lightening holes 128, 129 shaped to have curves are formed. The cross-sectional shapes of the lightening holes 128, 129 are arranged such that a nearest point 70 from a rotation axis A1 coincides with a curved portion having the largest curvature.Type: ApplicationFiled: June 27, 2023Publication date: November 27, 2025Inventors: Yu HASEGAWA, Keisuke TAKEUCHI, Mamoru KIMURA
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Patent number: 12431753Abstract: A rotating electric machine having high efficiency and high reliability without causing an increase in size and cost is realized. Each of the rectangular wire segment coils has a first region portion and a second region portion connected to the first region portion and formed in the circumferential direction. Adjacent pairs of wire coils include a conductive portion to which the first region portion of one of the rectangular wire segment coils and the second region portion of the other of the rectangular wire segment coils are connected. Each of the plurality of layers includes a first layer in which the first region portion appears at an axial end portion and a second layer in which the second region portion appears at an axial end portion when the coil end is viewed in an axial direction of the rotating electric machine.Type: GrantFiled: May 28, 2021Date of Patent: September 30, 2025Assignee: HITACHI ASTEMO, LTD.Inventors: Akeshi Takahashi, Kenichi Nakayama, Tetsuya Suto, Keisuke Takeuchi
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Publication number: 20250182624Abstract: A traveling support system detects a drop in a driver's performance and issues an alarm to the driver. The traveling support system includes: a trailing operation normality learning unit that learns a tendency of fluctuation in a trailing operation by a driver of the host vehicle of trailing a preceding vehicle is included in a normal range, from at least one feature of a change in a state of the host vehicle and a change in a state between the host vehicle and the preceding vehicle, the feature being calculated based on given data detected in time series; a trailing operation abnormality determining unit that determines that the current trailing operation is abnormal when fluctuation has a difference of a given size or more with the normal range; and an alarm control unit that issues an alarm when the current trailing operation is determined to be abnormal.Type: ApplicationFiled: April 4, 2023Publication date: June 5, 2025Applicant: HITACHI ASTEMO, LTD.Inventors: Yuya TANAKA, Satoshi MATSUDA, Keisuke TAKEUCHI
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Publication number: 20240241209Abstract: A vehicle control device is provided which has enhanced robustness against a shielding object, further, which does not measure a received radio wave from a radio transmitter and which can continue, for example, automatic driving control by comparing two types of vehicle positions calculated using the radio transmitter installed outside a vehicle and a sensor mounted on the vehicle and detecting an error in order to reduce a detection error of the radio transmitter due to a failure in communication of the radio transmitter. Two types of vehicle positions calculated using the sensor mounted on the vehicle and the radio transmitter are compared, and it is determined that the radio transmitter is affected by a shielding object in a case where a temporal change of a vehicle position deviation and/or a behavior change of a vehicle position (first own vehicle position) based on the radio transmitter is detected.Type: ApplicationFiled: March 8, 2022Publication date: July 18, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Yuta TSURUMOTO, Keisuke TAKEUCHI, Seiya ISHII
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Publication number: 20240174230Abstract: An object of the present invention is to provide a vehicle control device capable of improving ride comfort of a driver. A lane change detection unit 205 of a vehicle control device 200 determines a possibility of cut-in of an adjacent vehicle immediately in front of an own vehicle on the basis of an adjacent vehicle relationship value (for example, a relative speed between the own vehicle and the adjacent vehicle) in an advancing direction. An acceleration/deceleration control unit 206 corrects acceleration/deceleration of the own vehicle on the basis of the possibility of the cut-in determined on the basis of the adjacent vehicle relationship value in the advancing direction.Type: ApplicationFiled: February 28, 2022Publication date: May 30, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Takayuki SAITO, Masashi SEIMIYA, Taku TAKAHAMA, Keisuke TAKEUCHI, Yuta TSURUMOTO, Seiya ISHII
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Publication number: 20230211824Abstract: A driving assistance device that includes a processor and a memory and assists driving of a vehicle includes: an external environment information acquisition unit that acquires external environment information of the vehicle; an obstacle detection unit that detects an obstacle in front of the vehicle from the external environment information; a lane detection unit that detects a lane boundary line and a road edge from the external environment information; an alarm unit that issues an alarm or performs steering assist when deviation from the lane boundary line or the road edge is detected; and a state management unit that suppresses the alarm or the steering assist when the obstacle detection unit detects the obstacle.Type: ApplicationFiled: February 26, 2021Publication date: July 6, 2023Inventors: Tomoyasu SAKAGUCHI, Masashi SEIMIYA, Keisuke TAKEUCHI
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Publication number: 20230208233Abstract: A rotating electric machine having high efficiency and high reliability without causing an increase in size and cost is realized. Each of the rectangular wire segment coils has a first region portion and a second region portion connected to the first region portion and formed in the circumferential direction including a bent portion in the circumferential direction of the stator core 10, and a pair of the rectangular wire segment coils adjacent to each other at the coil ends of the plurality of rectangular wire segment coils has a conductive portion to which the first region portion of one of the rectangular wire segment coils and the second region portion of the other of the rectangular wire segment coils are connected.Type: ApplicationFiled: May 28, 2021Publication date: June 29, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Akeshi TAKAHASHI, Kenichi NAKAYAMA, Tetsuya SUTO, Keisuke TAKEUCHI
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Publication number: 20230001780Abstract: A rotating electric machine , and an electric wheel using the rotating electric machine, has a rotatably supported rotor and a stator separated by a prescribed gap from the rotor, wherein the rotor has a magnetic pole ring formed from a circular permanent magnet, and a core piece embedded in the permanent magnet. The magnetic pole ring has outer and inner peripheral surfaces formed in a ring shape, wherein one of the outer peripheral surface and the inner peripheral surface is a gap-facing surface that faces the aforementioned gap, and the other is a non-gap-facing surface different from the gap-facing surface. The non-gap-facing surface of the magnetic pole ring is configured from the permanent magnet, the gap-facing surface of the magnetic pole ring is configured containing the permanent magnet and the exposed core piece, and the permanent magnet is magnetized such that the core piece is the magnetic center.Type: ApplicationFiled: December 22, 2020Publication date: January 5, 2023Inventors: Makoto ITO, Akeshi TAKAHASHI, Keisuke TAKEUCHI
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Publication number: 20220355800Abstract: At the time of travel following a travel route, even if an environment around the travel route changes, estimation of a host vehicle position from a stationary object is realized. A vehicle control device has a processor and a memory and controls traveling of a vehicle, and includes a sensor that acquires surrounding environment information of the vehicle, a surrounding environment storage unit that acquires a stationary object from surrounding environment information acquired by the sensor, calculates a position of the stationary object, and stores the position of the vehicle on a travel route and a position of the stationary object in association with each other. The surrounding environment storage unit stores three or more of the stationary objects at each position on a travel route as stationary objects for host vehicle position estimation in a case of receiving a command to start storing the surrounding environment information and the travel route.Type: ApplicationFiled: June 30, 2020Publication date: November 10, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Akitoshi MIYAZAKI, Keisuke TAKEUCHI, Masashi SEIMIYA, Satoshi MATSUDA
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Publication number: 20220196424Abstract: When a vehicle is caused to autonomously travel and is guided to a target point, if an error from a design value occurs in a position or dimensions of an external-environment sensor due to a secular change of the vehicle, a riding state, or a loading state, an error also occurs in a sensing result. Thus, positional accuracy at the target point is deteriorated. There is provided a vehicle control method of controlling a vehicle by a vehicle control device including a processor and a memory. The vehicle control method includes a step of storing route information up to a predetermined point by the vehicle control device, and a step of performing autonomous traveling based on the route information by the vehicle control device. In the step of storing, a section for collecting information for disturbance correction on an external-environment sensor is stored.Type: ApplicationFiled: August 14, 2020Publication date: June 23, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Keisuke TAKEUCHI, Tomoyasu SAKAGUCHI, Masashi SEIMIYA
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Patent number: 11340090Abstract: In an automatic driving vehicle, traveling is continued in a case where a section in which a detailed map in which information required for automatic driving is recorded is not usable occurs during the traveling by the automatic driving. Automatic driving control means 100 for controlling automatic driving of a vehicle and map information holding means 601 for holding a detailed map including traveling lane information are provided. In a case where a section in which a detailed map newer than the detailed map held in the map information holding means 601 is not usable is in a traveling scheduled route, the automatic driving control means 100 continues to perform the automatic driving until a start point of the section is reached, using the detailed map held in the map information holding means 601.Type: GrantFiled: April 6, 2018Date of Patent: May 24, 2022Assignee: HITACHI ASTEMO, LTDInventors: Keisuke Takeuchi, Takashi Tsutsui
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Publication number: 20200158531Abstract: In an automatic driving vehicle, traveling is continued in a case where a section in which a detailed map in which information required for automatic driving is recorded is not usable occurs during the traveling by the automatic driving. Automatic driving control means 100 for controlling automatic driving of a vehicle and map information holding means 601 for holding a detailed map including traveling lane information are provided. In a case where a section in which a detailed map newer than the detailed map held in the map information holding means 601 is not usable is in a traveling scheduled route, the automatic driving control means 100 continues to perform the automatic driving until a start point of the section is reached, using the detailed map held in the map information holding means 601.Type: ApplicationFiled: April 6, 2018Publication date: May 21, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Keisuke TAKEUCHI, Takashi TSUTSUI
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Patent number: 9656675Abstract: A vehicle control system for adjusting control characteristics governing behaviors of a vehicle in accordance with a driving preference of a driver. The vehicle control system is comprised of a shifting means that shifts a driving mode of the vehicle between a first mode in which a driving force to be generated is moderated and a second mode in which a driving force to be generated is larger than that generated under the first mode, upon exceedance of a predetermined threshold value by an index that is changed according to a change in a behavior of the vehicle resulting from an accelerating or a decelerating operation executed by the driver. The threshold value is set to a limit value of acceleration for human beings to sense a linear change in the acceleration from zero.Type: GrantFiled: August 29, 2011Date of Patent: May 23, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keisuke Takeuchi, Toshio Tanahashi, Yoshimitsu Agata, Tomohide Kawasaki, Shin Noumura
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Patent number: 9630610Abstract: A driving force control system for a vehicle having a mechanism for changing an engine speed continuously. The driving force control system basically controls said mechanism in a manner such that the engine speed is adjusted to optimize fuel economy. The driving force control system is configured to determine an index representing a demand to enhance agility of behavior of the vehicle based on an actual behavior of the vehicle or an amount of operation carried out by a driver to cause said behavior. An upper limit value of the engine speed of the case in which a drive demand is increased is determined on the basis of the index, and the upper limit value is set to the higher value with an increase in the index representing the demand to enhance agility of behavior of the vehicle.Type: GrantFiled: September 27, 2011Date of Patent: April 25, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Takeuchi, Takeshi Hayashi, Yoshimitsu Agata, Toshio Tanahashi, Shin Noumura, Kazuo Tsuruoka, Hiroki Kaneko, Tomoyuki Honda
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Patent number: 9561801Abstract: A vehicle control system is configured to decrease a value of the index upon reduction in an absolute value of acceleration detected continuously during propulsion of the vehicle to fall below a predetermined value toward zero, as compared to that of a case in which the absolute value of the instant acceleration is larger than the predetermined value (steps S1 to 5). The acceleration includes at least any of an instant forward acceleration established by operating an accelerator, an instant longitudinal acceleration established by operating the accelerator or a brake, and an instant synthesized acceleration of the instant longitudinal acceleration and an instant lateral acceleration established by operating a steering wheel.Type: GrantFiled: July 11, 2013Date of Patent: February 7, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Takeuchi, Masaki Suzuki, Toshio Tanahashi
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Patent number: 9494091Abstract: A driving force control system for vehicle for controlling a target speed of an engine serving as a prime mover by selecting a control mode based on an index representing a driving preference of a driver. The control mode is selected from a first mode for operating the engine to achieve the target speed while optimizing a fuel economy, and a second mode for operating the engine to achieve the target speed at a speed lower than that achieved while optimizing the fuel economy. The driving force control system is configured to determine a lower limit speed of the engine based on the index provided that the second mode is selected, and to restrict a lower limit value of the target speed of the engine to the lower limit speed in case the target speed of the engine exceeds the lower limit speed under the second mode.Type: GrantFiled: September 20, 2011Date of Patent: November 15, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Takeuchi, Kazuo Tsuruoka, Toshio Tanahashi, Yoshimitsu Agata, Hiroki Kaneko, Koji Tsurumura
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Patent number: 9381896Abstract: A driving force control device of a vehicle is provided which is configured to calculate a required braking force on the basis of an amount of pressure applied to a brake operating mechanism, which is operated for deceleration by a driver, and to control a braking force of a power plant, which includes a drive source generating an accelerating force and a braking force, and a braking force of a braking mechanism, which generates a braking force with the operation of the braking operating mechanism, in cooperation so that the total braking force of the vehicle as a whole becomes the required braking force. The driving force control device is configured to detect acceleration information including a lateral acceleration of the vehicle and to control the braking force of the power plant on the basis of the detected acceleration information when the brake operating mechanism is operated.Type: GrantFiled: February 26, 2012Date of Patent: July 5, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Takeuchi, Kazuo Tsuruoka, Toshio Tanahashi, Yoshimitsu Agata, Hiroki Kaneko, Yoji Kanehara
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Publication number: 20160107649Abstract: A vehicle control system is configured to decrease a value of the index upon reduction in an absolute value of acceleration detected continuously during propulsion of the vehicle to fall below a predetermined value toward zero, as compared to that of a case in which the absolute value of the instant acceleration is larger than the predetermined value (steps S1 to 5). The acceleration includes at least any of an instant forward acceleration established by operating an accelerator, an instant longitudinal acceleration established by operating the accelerator or a brake, and an instant synthesized acceleration of the instant longitudinal acceleration and an instant lateral acceleration established by operating a steering wheel.Type: ApplicationFiled: July 11, 2013Publication date: April 21, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke TAKEUCHI, Masaki SUZUKI, Toshio TANAHASHI
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Publication number: 20150334042Abstract: Provided is a technique of finely performing congestion determination and congestion control on a cellular communication system employing a C-RAN architecture. An instruction is given to a control device to acquire location information of a terminal in a cell of a C-RAN using a first message between network nodes, acquire a congestion indicator of the cell of the C-RAN using a second message between the network nodes, determine the occurrence of congestion of the cell based on the congestion indicator, identify a terminal staying in a cell in which congestion is occurring based on the location information of the terminal, and limit a maximum usable bandwidth of the specified terminal.Type: ApplicationFiled: May 15, 2015Publication date: November 19, 2015Inventors: Rintaro KATAYAMA, Yusuke SHOMURA, Keisuke TAKEUCHI, Hiroto NAKAGAWA