Patents Assigned to HITACHI ASTEMO, LTD.
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Patent number: 12686371Abstract: A vehicle control device, a vehicle control method, and a vehicle control system are configured to: (i) acquire a first physical quantity relating to a speed of a vehicle and a second physical quantity relating to a requested braking force required to decelerate the vehicle; and (ii) generate a driving force by a motor under a state in which a friction braking force is being generated when the vehicle is to be decelerated based on the second physical quantity.Type: GrantFiled: August 19, 2021Date of Patent: July 21, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Satoshi Kaneko, Keisuke Suzuki, Naoki Shinohara
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Patent number: 12688116Abstract: An electronic control device includes: a microcomputer including a processor that executes a predetermined program; and an external nonvolatile memory connected to the microcomputer, in which the microcomputer includes an internal nonvolatile memory, a first communication unit that communicates with the external nonvolatile memory, and a second communication unit that communicates with an external device, and the microcomputer writes data, which is received from the external device and rewrites the internal nonvolatile memory, in the internal nonvolatile memory and the external nonvolatile memory.Type: GrantFiled: April 22, 2022Date of Patent: July 21, 2026Assignee: Hitachi Astemo, Ltd.Inventors: Yasunori Isozaki, Yusuke Abe, Takahiro Iida
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Patent number: 12688710Abstract: An object is to provide a rearward white line inference device, a target recognition device, and a method capable of inferring a rearward white line with high accuracy. A rearward white line inference device includes: a white line detection unit that detects a white line ahead of a host vehicle; an azimuth-relative-to-white-line generation unit that obtains an azimuth of the host vehicle relative to the white line every predetermined time interval based on a detection result of the white line detection unit; and a relative azimuth inference unit that infers a relative azimuth from the azimuth of the host vehicle at a certain point based on the azimuth of the host vehicle obtained by the azimuth-relative-to-white-line generation unit.Type: GrantFiled: February 4, 2022Date of Patent: July 21, 2026Assignee: Hitachi Astemo, Ltd.Inventors: Hitoshi Hayakawa, Kento Kagimoto
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Patent number: 12679293Abstract: A first switch circuit provided between a first control circuit and a first power supply interrupts supply of a first voltage to the first control circuit in a case where a voltage drop of the first voltage is equal to or greater than a threshold, a second switch circuit connected to a communication line used for communication between the first power supply and a second control circuit interrupts supply of the first voltage to the communication line in a case where the voltage drop of the first voltage is equal to or greater than a threshold, and a power supply switch circuit connected to the first control circuit and the communication line switches a supply source of a power supply voltage to the first control circuit from the first power supply to the second power supply.Type: GrantFiled: June 7, 2023Date of Patent: July 14, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Takayasu Norimatsu, Kenji Kogo, Koji Maeda
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Patent number: 12683053Abstract: A solenoid includes a coil bobbin, a coil, a terminal, a housing, an armature, an actuation pin, and the like. The coil bobbin includes a tubular portion, and a first flange portion formed on one end of the tubular portion and extending radially to outside the tubular portion. The coil is wound around the coil bobbin. The terminal connects a terminal conductor portion of the coil and a cable. The terminal includes a joint portion that joins the terminal conductor portion of the coil. The joint portion extends in a direction along one end surface of the first flange portion.Type: GrantFiled: September 17, 2021Date of Patent: July 14, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Tomohiko Iida, Shunsuke Mori, Hiroshi Yamagai
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Patent number: 12679453Abstract: A steering apparatus control apparatus, a steering apparatus control method, and a steering system according to the present invention are applied to a vehicle including a steering apparatus configured to be able to control a steering angle of road wheels independently of an operation quantity of a steering operation input member, compare a target yaw rate based on a physical quantity about a running state of the vehicle and the operation quantity of the steering operation input member with an actual yaw rate based on the physical quantity about the running state of the vehicle, and control a steering actuator in a direction in which a yaw rate of the vehicle is cancelled out such that the actual yaw rate approximates the target yaw rate. In this way, vehicle behavior that agrees with driver intention can be realized.Type: GrantFiled: July 8, 2022Date of Patent: July 14, 2026Assignee: HITACHI ASTEMO, LTD.Inventor: Huajun Liu
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Patent number: 12679157Abstract: An ECU includes a posture stability control portion configured to determine an instruction value for controlling a variable damper according to an input change in a posture of a vehicle, a ride comfort control portion configured to determine an instruction value for controlling the variable damper according to an input sprung vibration of the vehicle, and an instruction value calculation portion configured to determine an instruction value directed to the variable damper based on both the instruction values of the posture stability control portion and the ride comfort control portion. The instruction value calculation portion prioritizes the instruction value of the ride comfort control portion when a value indicating the change in the posture of the vehicle is equal to or larger than a predetermined value and a value indicating a sprung vibration in a sprung resonance frequency band is larger than a predetermined value.Type: GrantFiled: July 6, 2022Date of Patent: July 14, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Atsushi Taguchi, Ryusuke Hirao
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Patent number: 12679348Abstract: A processing device in an in-vehicle electronic control device recognizes a travelable area on a road surface around a host vehicle that the host vehicle enters, based on a result of an integration process, sets an avoidance target for avoiding a collision with an object predicted to collide when a collision between the host vehicle and the object is predicted, generates an avoidance route in the travelable area, the avoidance route leading to the avoidance target, sets an entering object detection area around the host vehicle to detect entry of the object, and detects the object having entered the entering object detection area based on object information of the object, detected by a plurality of external sensors, before the integration process, and determines whether to execute an avoidance operation along the avoidance route based on a result of the detection.Type: GrantFiled: August 25, 2022Date of Patent: July 14, 2026Assignee: HITACHI ASTEMO, LTD.Inventor: Jyunya Iizuka
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Patent number: 12679335Abstract: 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: GrantFiled: November 10, 2021Date of Patent: July 14, 2026Assignee: Hitachi Astemo, Ltd.Inventors: Masaru Yamasaki, Takahiro Ito, Kenta Maeda, Shuji Ohshita, Kentarou Ueno
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Publication number: 20260196055Abstract: An external world recognition device includes: an imaging plane estimation unit that estimates an imaging plane in the first image on a basis of a detection result of the landmark by the first landmark detection unit; an image transform estimation unit that estimates an image transform parameter matching an imaging plane in the second image on a basis of information on the imaging plane estimated by the imaging plane estimation unit and imaging parameters of the plurality of imaging units; a feature collation unit that collates a feature of the landmark detected from the first image subjected to image transform using an image transform parameter by the image transform estimation unit with a feature of the landmark detected from the second image; and a position estimation unit that estimates a three-dimensional position of the landmark on a basis of a collation result of the feature collation unit.Type: ApplicationFiled: April 12, 2023Publication date: July 9, 2026Applicant: Hitachi Astemo, Ltd.Inventors: Hideaki KIDO, Kota IRIE, Hirotomo SAI
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Patent number: 12674499Abstract: A first annular groove is filled with a material of a solenoid case and a first joined portion is formed after a second annular groove is filled with the material of the solenoid case and a second joined portion is formed. This allows a load applied to a piston rod when the material of the solenoid case flows into the first annular groove to be partially received by the second joined portion, thereby contributing to reducing a reaction force received by the piston rod and thus preventing the deformation of an upper-end portion of the piston rod due to the reaction force received by the piston rod.Type: GrantFiled: July 22, 2022Date of Patent: July 7, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Masato Higuma, Atsushi Koshizaka, Keiji Kawahara, Yu Ishimaru
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Patent number: 12673645Abstract: Provided is a road surface type detection device capable of distinguishing an asphalt reference road surface type from other road surface types in real time from comparison of magnitudes and frequencies of strain sensor signal waveforms that are excellent for information detection in a low-speed range. A road surface type detection device 10 that estimates a plurality of road surface types (asphalt, a gravel road, a grass road) includes at least one sensor element 1, 2, 3 that detects a physical amount of a vehicle, a road surface type estimation unit 4, and a storage unit 411 that stores output values of the sensor element 1, 2, 3 corresponding to the plurality of road surface types. Any one road surface type asphalt, a gravel road, a grass road) is estimated out of the plurality of road surface types on the basis of a magnitude of a waveform of a sensor signal output by the sensor element 1, 2, 3. It is thus possible to distinguish asphalt from other road surface types in real time.Type: GrantFiled: February 14, 2022Date of Patent: July 7, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Fumio Yuki, Takeo Hosokawa, Atsuo Soma, Tatsuhiko Monji
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Patent number: 12676531Abstract: A fluid supply device includes an electric motor, an exterior case, a fixing member, a harness, a lid which includes a holding portion, and a stopper. An elastic member, which has annular-shaped, is disposed in a compressed manner between the outer circumferential surface of the electric motor and the inner circumferential surface of the exterior case. The elastic member is compressed to apply a restoring force to the electric motor in a radial direction of the electric motor, and apply a restoring force to the holding portion of the lid.Type: GrantFiled: August 11, 2023Date of Patent: July 7, 2026Assignee: Hitachi Astemo, Ltd.Inventor: Naoya Kuroiwa
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Patent number: 12677389Abstract: An in-vehicle device (1) includes: a substrate (12) on which a power supply circuit unit to which a voltage and a current of an in-vehicle battery are supplied and which distributes the voltage and the current therein and a power supply-related component (11) around the power supply circuit unit are mounted; a connector (4, 5, 6) which is mounted on the substrate (12) and electrically connects an external device and the substrate (12); and a housing (3) which accommodates the substrate (12) therein and includes a connector attachment portion (2) which defines an attachment position of the connector (4, 5, 6). The housing (3) has at least one wall portion (17, 16) protruding toward the substrate (12) inside the housing (3) and extending along an attachment direction of the connector (6).Type: GrantFiled: December 24, 2021Date of Patent: July 7, 2026Assignee: HITACHI ASTEMO, LTD.Inventor: Kimihito Watanabe
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Patent number: 12676066Abstract: In the vehicle control device mounted on the vehicle, the information acquisition unit 11 acquires a vehicle information data group representing vehicle information regarding the behavior of the vehicle 2, a road environment data group 32 representing road environment information regarding the environment of the road on which the vehicle 2 is traveling, and a sensor recognition data group 33 representing sensor recognition information regarding the surrounding environment of the vehicle 2 recognized by the external sensor group 4 mounted on the vehicle 2. Based on the road environment data group 32 and the sensor recognition data group 33, the apparent obstacle prediction unit 12 predicts the future behavior of the apparent obstacle that may hinder the traveling of the vehicle 2.Type: GrantFiled: August 25, 2022Date of Patent: July 7, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Daniel Gabriel, Yuki Horita, Shigenori Hayase, Tatsuhiko Monji
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Patent number: 12673359Abstract: In a rack bar and a steering device using the same, an endmost tooth bottom for reducing a stress exerted on a first forging die during die forging of a rack tooth molding part is formed on the endmost side of a plurality of tooth bottoms. Specifically, the endmost tooth bottom is formed so that a depth thereof is less than a depth of an ordinary tooth bottom by a difference. This reduces an amount of flow of a material of the rack bar during formation of the endmost tooth bottom by an amount commensurate with the difference. As a result, the stress exerted on the first forging die can be reduced, and occurrence of heat checking in the first forging die can be suppressed.Type: GrantFiled: July 7, 2022Date of Patent: July 7, 2026Assignee: HITACHI ASTEMO, LTD.Inventors: Shinichi Yamanaka, Daisuke Hamanaka, Norihiro Kimura, Keisuke Kitamura
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Patent number: 12676518Abstract: The purpose of the present invention is to provide a rotary electrical machine having improved cooling performance. A rotary electrical machine according to the present invention comprises: a stator 301; a rotor 302; and a cooling passage through which a refrigerant for cooling the stator 301 and the rotor 302 flows. The cooling passage is provided with: a refrigerant inlet 343 through which the refrigerant is introduced; stator cooling passages 3013 in communication with the refrigerant inlet 343; a rotor cooling passage 304; and a connection passage 315 which connects the stator cooling passages 3013 with the rotor cooling passage 304. The rotor cooling passage 304 is provided with refrigerant outlets 306a, 306b through which the refrigerant is discharged radially outside the rotor 302 in association with rotational motion of the rotor 302. A plurality of the stator cooling passages 3013 are arranged in the circumferential direction of a stator core 3010.Type: GrantFiled: July 25, 2022Date of Patent: July 7, 2026Assignee: Hitachi Astemo, Ltd.Inventors: Yuri Fujima, Masahiro Hori, Takaki Itaya, Hideaki Goto
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Patent number: 12677400Abstract: An in-vehicle device includes a circuit board on which a heat generating component (electronic component) is mounted, a first housing (base member) that faces the heat generating component, and a thermal conductive material that fills a space between the heat generating component and the first housing. The first housing includes a first surrounding portion and a second surrounding portion. The first surrounding portion is formed inside a region of the first housing that overlaps with the heat generating component while having the thermal conductive material interposed therebetween, and surrounds a point in the region of the first housing that faces the center of the heat generating component. The second surrounding portion is formed outside the region of the first housing, and surrounds the first surrounding portion.Type: GrantFiled: February 2, 2022Date of Patent: July 7, 2026Assignee: Hitachi Astemo, Ltd.Inventors: Kimihito Watanabe, Naoki Hoshiya
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Publication number: 20260186031Abstract: A direct current estimation device that estimates a value of a direct current in a power conversion device that converts a direct current into an alternating current and outputs the alternating current to a dynamo-electric machine includes a Kalman filter that estimates a direct current estimation value, and the direct current estimation device uses at least an observation value of the alternating current and an angular velocity observation value of the dynamo-electric machine as input signals to the Kalman filter.Type: ApplicationFiled: January 17, 2022Publication date: July 2, 2026Applicant: Hitachi Astemo, Ltd.Inventor: Takashi NAKAZAWA
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Publication number: 20260184128Abstract: A road-surface inclined-state detection method includes an acquisition step of acquiring a vehicle state where pitching moment causing front wheels of a vehicle to move upward in a vertical direction relative to rear wheels of the vehicle is applied to the vehicle, and where rear suspensions suspending the rear wheels are stroked in a compressing direction, a count step of starting counting after the vehicle state acquired in the acquisition step meets a predetermined condition, and continuing the counting until the vehicle state fails to meet the predetermined condition, and an inclined-state detection step of detecting an inclined state of a road surface R on which the vehicle travels, according to count values counted in the count step.Type: ApplicationFiled: November 25, 2024Publication date: July 2, 2026Applicant: Hitachi Astemo, Ltd.Inventors: Benjamin Kruse, Michael Sadie