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公开(公告)号：US12285985B2
公开(公告)日：2025-04-29
申请号：US18014887
申请日：2021-07-14
Applicant: Hitachi Astemo, Ltd.
Inventor： Yoshifumi Kawasaki , Makoto Matsuura , Ryusuke Hirao
IPC: B60G17/0165 , B60G17/016 , B60G17/019
Abstract: A controller as a control apparatus controls a shock absorber of a control target wheel (a rear wheel) located in back of a detection target portion (a front wheel) of an unsprung acceleration sensor based on a detection value detected by the unsprung acceleration sensor on the front wheel side provided on a vehicle. In this case, the controller identifies a movement distance (a delay distance) from the detection target portion (the front wheel) and controls the shock absorber of the control target wheel (the rear wheel) located in back thereof based on the detection value of the unsprung acceleration sensor and a vehicle speed for each control period.
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公开(公告)号：US20250128564A1
公开(公告)日：2025-04-24
申请号：US18692593
申请日：2022-09-20
Applicant: Hitachi Astemo, Ltd.
Inventor： Mikio YAMASHITA
IPC: B60G17/08 , B60G17/0165
Abstract: A suspension system includes: a variable damper configured to use a damping force variable actuator to adjust communication of working fluid generated in a passage by a relative movement between a vehicle body and a wheel, to thereby adjust a damping force over a range of a soft characteristic to a hard characteristic; and a controller configured to control the damping force variable actuator. The variable damper further includes a frequency response unit configured to reduce the damping force for vibration at a specific frequency. The controller is configured to increase a change rate from a soft side to a hard side at a time of controlling the damping force to reach a target damping force when a frequency of the relative movement between the vehicle body and the wheel is lower than a first frequency set to the frequency response unit.
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公开(公告)号：US12283847B2
公开(公告)日：2025-04-22
申请号：US18017911
申请日：2021-05-18
Applicant: Hitachi Astemo, Ltd.
Inventor： Masahiro Hori , Masanori Sawahata
Abstract: Improving the coercive force of magnets used in a rotary electric machine by arranging magnets such that a q-axis side portion is located on an outer diameter side with respect to a d-axis side portion, and a magnet thickness Ti on an inner diameter side (d-axis side) of a rotor core is formed to be larger than a magnet thickness To on the outer diameter side (q-axis side) of the rotor core. An axial space is formed in the magnets such that when the lateral cross section of each of the magnets is divided into an outer diameter side region112o and an inner diameter side region112i in a manner that the lateral cross section areas are equal to each other with a circumference C around a rotation center as a boundary, and a space density of the axial space in the inner diameter side region112i is larger than a space density of the axial space in the outer diameter side region112o.
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公开(公告)号：US20250126372A1
公开(公告)日：2025-04-17
申请号：US18702734
申请日：2022-07-29
Applicant: Hitachi Astemo, Ltd.
Inventor： Hiroaki NAKATA
IPC: H04N25/532 , G06T7/55 , H04N23/67 , H04N23/73 , H04N23/90 , H04N25/535
Abstract: To provide a vehicle-mounted control device that suppress a ranging error by controlling an imaging start timing of a rolling-shutter type camera according to a situation when acquiring the three-dimensional information around the vehicle based on a pair of still images captured by a pair of the cameras including at least one rolling-shutter type camera. The vehicle-mounted control device communicates with a plurality of cameras including a first camera with a rolling-shutter type image sensor. The vehicle-mounted control device includes: a ranging unit that measures a distance to a ranging target using a plurality of images captured with a first camera and a second camera, the second camera being capable of capturing a same ranging target in at least part of an image capturing region of the first camera; and an exposure timing adjusting unit that adjusts an exposure timing of at least one of the first camera or the second camera based on a ranging position of at least one of the plurality of images.
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公开(公告)号：US20250108788A1
公开(公告)日：2025-04-03
申请号：US18832879
申请日：2022-10-25
Applicant: Hitachi Astemo, Ltd.
Inventor： Kenta MAEDA , Takahiro ITO , Kentarou UENO , Shuji OHSHITA
Abstract: Provided is a vehicle integrated control device capable of controlling a posture of a vehicle so as to prevent in advance an occupant who has high sensitivity to motion sickness from suffering from the motion sickness. The vehicle integrated control device includes a target value generation unit that generates or acquires a control target value of a movement of a vehicle; a motion sickness sensitivity acquisition unit that acquires a motion sickness sensitivity index that is a quantitative value that is likeliness of incidence of motion sickness that differs depending on an occupant characteristic with respect to at least one occupant riding on the vehicle; and a target value correction unit that corrects the control target value based on the control target value and the motion sickness sensitivity index.
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Patent Agency Ranking
公开(公告)号：US12257910B2
公开(公告)日：2025-03-25
申请号：US18262590
申请日：2021-09-30
Applicant: HITACHI ASTEMO, LTD.
Inventor： Takeshi Ikuyama , Koichi Yahata , Shinichirou Hida , Yawara Kato
Abstract: There are provided a plurality of drive circuits (103 U, 103 L) for driving respective plural switching devices constituting upper arms and lower arms, a power supply circuit for supplying a power supply to the plurality of drive circuits, and a discharge circuit for discharging a capacitor. The power supply circuit includes a first transformer (201U) for the upper arms, and a second transformer (201L) for the lower arms, which include a primary winding connected in parallel to a DC power supply. The first transformer and the second transformer include a secondary winding for supplying a power supply to the drive circuits and for supplying a power supply to a low-voltage circuit (110). Each of the first transformer and the second transformer includes a feedback winding for outputting the voltage output to the drive circuits, to a power supply control IC. The discharge circuit (120) is driven by a power supply supplied from the feedback winding.
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公开(公告)号：US20250096079A1
公开(公告)日：2025-03-20
申请号：US18729353
申请日：2022-12-27
Applicant: Hitachi Astemo, Ltd.
Inventor： Masahiro SEO , Takeshi TOKUYAMA , Takashi ISHII
IPC: H01L23/495 , H01L25/07 , H02M7/00
Abstract: In this semiconductor device and the inverter provided with the semiconductor device, an upper arm semiconductor element on a positive electrode wiring plate and an AC wiring plate are connected to each other by a first wiring member, and a lower arm semiconductor element on the AC wiring plate and a negative electrode wiring plate are connected to each other by a second wiring member. The AC wiring plate has: a first region to which the first wiring member is to be connected; a second region in which the lower arm semiconductor element is to be provided; and a connection region that connects these two regions. The connection region is positioned opposite positive-electrode/negative-electrode terminals with a region in between where the first and second wiring members are used, and the placement order is as follows: the positive electrode wiring plate, the negative electrode wiring plate, the first region, and the second region.
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公开(公告)号：US20250091643A1
公开(公告)日：2025-03-20
申请号：US18368193
申请日：2023-09-14
Applicant: Hitachi Astemo, Ltd.
Inventor： Xiaoliang ZHU , Subrata Kumar KUNDU , Paul LIU
Abstract: In some examples, a service computing device receives, from a vehicle computing device onboard a vehicle, a communication including sensor data obtained from at least one sensor onboard the vehicle. Based on the communication, the service computing device determines a transmission delay corresponding to a difference between a time when the vehicle sent the communication and a time when the communication was received. Based on the communication, the service computing device determines a trajectory of the vehicle on a travel route. Based on the sensor data, transmission delay, wind direction and magnitude, surrounding objects, and trajectory, the service computing device determines vehicle control information for the vehicle. The service computing device sends, to the vehicle, based at least on the vehicle control information, at least one instruction causing the vehicle to perform at least one control operation for traversing one or more locations associated with the trajectory of the vehicle.
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公开(公告)号：US12254700B2
公开(公告)日：2025-03-18
申请号：US17519317
申请日：2021-11-04
Applicant: Hitachi Astemo, Ltd.
Inventor： Xiaoliang Zhu , Subrata Kumar Kundu , Paul Liu
Abstract: A system comprising at least one hardware processor for updating a cloud-based road anomaly database is disclosed, wherein the system receives information from a vehicle regarding an object detected by one or more sensors of the vehicle, the information may include a location and/or a size of the detected object; compares the location and/or the size of the first detected object against data stored in a road feature database regarding the first detected object; determines, based on comparing the location and/or the size, an accuracy score associated with the first detected object and the second detected object; and updates the cloud-based road anomaly database with the received information for the second detected object based on the associated accuracy score being higher than at least one of a threshold accuracy score or an accuracy score associated with corresponding object information stored in the cloud-based road anomaly database.
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公开(公告)号：US12252210B2
公开(公告)日：2025-03-18
申请号：US17406668
申请日：2021-08-19
Applicant: Hitachi Astemo, Ltd.
Inventor： Tsubasa Kimura
Abstract: A shock absorber includes a tubular outer tube, a tubular inner tube, a rod, a piston, an urging member, and a guide bush. The guide bush is a ring-shaped member arranged along an inner periphery of the outer tube, abuts against a front surface and a rear surface of the inner tube to movably hold the inner tube, and is separated from left and right side surfaces of the inner tube.
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