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公开(公告)号：US20230395457A1
公开(公告)日：2023-12-07
申请号：US18034305
申请日：2021-09-17
Applicant: Hitachi Astemo, Ltd.
Inventor： Takahiro ARAKI , Takeshi TOKUYAMA , Shigehisa AOYAGI , Noriyuki MAEKAWA
IPC: H01L23/367 , H02M7/00 , H01L23/498 , H01L23/00 , H01L23/522 , H05K1/02
CPC classification number: H01L23/3672 , H02M7/003 , H01L23/49822 , H01L24/40 , H01L23/5223 , H05K1/0231 , H01L2224/40137 , H01L2224/40265 , H01L2924/19041 , H01L2924/13055
Abstract: A power semiconductor device includes: a substrate in which a positive electrode wiring connected to a first conductor on a high potential side and a negative electrode wiring connected to a fourth conductor on a low potential side are provided on one surface, and an output wiring connected to a second conductor and a third conductor is provided on the other surface so as to face the positive electrode wiring and the negative electrode wiring; and a first capacitor that smooths DC power supplied to a first upper-arm circuit body and a first lower-arm circuit body. The substrate is disposed between the first upper-arm circuit body and the first lower-arm circuit body. The first capacitor is disposed between the first upper-arm circuit body and the first lower-arm circuit body, and is connected to the positive electrode wiring and the negative electrode wiring on the substrate.
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公开(公告)号：US11821780B2
公开(公告)日：2023-11-21
申请号：US17595331
申请日：2020-06-09
Applicant: Hitachi Astemo, Ltd.
Inventor： Akira Uenodan , Nobuaki Gorai , Shigeto Hirohata , Naoki Saito , Takahiro Miki
CPC classification number: G01F5/00 , G01F1/6842 , G01F1/6845 , G01F15/14
Abstract: An object is to improve measurement accuracy of a flow rate measurement device. A flow rate measurement device including: a first void which is formed of one surface of the support body and one surface of the circuit board; a second void which is formed of a surface opposite to the one surface of the circuit board and the housing; and a third void which is formed of a surface opposite to the one surface of the support body and a cover.
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公开(公告)号：US20230364960A1
公开(公告)日：2023-11-16
申请号：US18054785
申请日：2022-11-11
Applicant: Hitachi Astemo, Ltd.
Inventor： Masato TOKUHARA
IPC: B60G17/017 , B60R25/33 , B60G17/019
CPC classification number: B60G17/017 , B60R25/33 , B60G17/019 , B60R2325/306 , B60G2300/12 , B60G2400/71 , B60G2500/11
Abstract: This control system comprises: a control device which, while a vehicle is driven, receives power to control the operation of a moving part and which, while the vehicle is stopped, does not receive power; and a system which is capable of communicating with the control device, and which, when the vehicle is stopped, receives power so as to be capable of ascertaining first information pertaining to time or which is capable of acquiring, during the driving, second information pertaining to times before and after when the vehicle was stopped. When the vehicle is restarted after being stopped, the control device uses at least one of the first information and the second information received from the system to ascertain the time elapsed while the vehicle was stopped, and uses the elapsed time to control the operation of the moving part.
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534.发明授权公开(公告)号：US11807249B2
公开(公告)日：2023-11-07
申请号：US17311858
申请日：2019-08-19
Applicant: Hitachi Astemo, Ltd.
Inventor： Shingo Nasu , Shinji Seto , Nobuyuki Ichimaru , Ryusuke Hirao
IPC: B60W40/10 , B60W30/18 , B60W40/109
CPC classification number: B60W40/109 , B60W30/18 , B60W2510/22 , B60W2520/125 , B60W2520/14 , B60W2520/28
Abstract: An object of the present invention is to provide a vehicle motion state estimation device and method that can estimate the vertical motion state amount with high accuracy by taking into consideration vertical force in which the frictional force acting in the front-rear direction or lateral direction of the wheel acts on the vehicle body due to the geometry of suspension. A vehicle motion state estimation device in a vehicle in which a wheel and a vehicle body are coupled via a suspension, the vehicle motion state estimation device including: a vertical motion-caused wheel speed component estimation unit that estimates a wheel speed component caused by vertical motion of the vehicle; a vertical force estimation unit that calculates vertical force in which frictional force of the wheel caused by motion of the vehicle acts on the vehicle body by geometry of the suspension; and a vertical motion estimation unit that estimates a state amount of vertical motion of a vehicle, in which the vertical motion estimation unit estimates a state amount of vertical motion of the vehicle based on a wheel speed component from the vertical motion-caused wheel speed component estimation unit and vertical force acting on the vehicle body from the vertical force estimation unit.
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公开(公告)号：US20230347910A1
公开(公告)日：2023-11-02
申请号：US18025839
申请日：2021-06-29
Applicant: Hitachi Astemo, Ltd.
Inventor： Zihan YU , Takakiyo YASUKAWA , Kota IRIE , Tatsuhiko MONJI
IPC: B60W40/112 , B60W40/072 , G06V20/56
CPC classification number: B60W40/112 , B60W40/072 , G06V20/588 , B60W2420/42
Abstract: There are provided a vehicle orientation estimation system and a vehicle orientation estimation method which can accurately estimate an inclination angle of a vehicle without being affected by a traveling place or an environment in a vehicle orientation estimation system and a vehicle orientation estimation method which estimate an orientation of the vehicle using an in-vehicle camera. A region setting unit that sets a first region and a second region that is on the same horizontal line as the first region, in a measurement region corresponding to a road surface acquired by a distance measurement device mounted on a vehicle; a distance calculation unit that calculates a distance to the road surface of each of the first region and the second region from the vehicle; and an inclination angle calculation unit that obtains an inclination angle of the vehicle based on the distance to the road surface of each of the first region and the second region and a positional relationship of the first region and the second region are included.
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Patent Agency Ranking
公开(公告)号：US20230347888A1
公开(公告)日：2023-11-02
申请号：US17796468
申请日：2021-01-27
Applicant: Hitachi Astemo, Ltd.
Inventor： Kentaro UENO , Daisuke NOMA
CPC classification number: B60W30/143 , B60W50/0098 , B60W2552/20 , B60W2554/00 , B60W2520/125
Abstract: A vehicle control device, a vehicle control method, and a vehicle control system according to the present invention acquire a first driving area in front of a vehicle, the first driving area being included in a first target command specified by a recognition and determination unit that performs recognition and determination, output a first control command for driving the vehicle at a velocity and on a driving path that are based on a specification relating to driving of the vehicle in the first driving area, acquire a second driving area that partly overlaps the first driving area in front of the vehicle while the vehicle is running in the first driving area, the second driving area being included in a second target command specified by the recognition and determination unit, and output a second control command for driving the vehicle at a velocity and on a driving path that are based on a specification relating to driving of the vehicle in the second driving area. In this way, ride quality and comfort of a vehicle can be improved.
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公开(公告)号：US20230339534A1
公开(公告)日：2023-10-26
申请号：US18044355
申请日：2021-09-02
Applicant: HITACHI ASTEMO, LTD.
Inventor： Hiroki SONODA , Yoshiji HASEGAWA , Tomoaki FUJIBAYASHI
CPC classification number: B62D5/046 , B62D5/0475 , B62D15/00
Abstract: A steering device according to the present invention includes: a steering input device including a reaction force actuator that applies a steering reaction force to a steering operation input member; and a control device including a steering gear ratio change unit that changes a steering gear ratio in accordance with a vehicle speed, a reaction force actuator control unit that controls an output amount of the reaction force actuator in accordance with an operation angular velocity of the steering operation input member, and a reaction force actuator output amount change unit that changes, based on the steering gear ratio, the output amount of the reaction force actuator. This makes it possible to set an appropriate steering reaction force applied to the steering operation input member, thereby stably reducing the operational burden on a driver.
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公开(公告)号：US20230339487A1
公开(公告)日：2023-10-26
申请号：US17778071
申请日：2020-09-08
Applicant: Hitachi Astemo, Ltd.
Inventor： Yuuki OKUDA , Takashi OKADA
CPC classification number: B60W50/085 , B60W40/08 , B60W30/16 , B60W10/08 , B60W10/06 , B60W10/02 , B60W2540/043 , B60W2556/45
Abstract: An object of the present invention is to provide a vehicle control device that controls an engine so as to improve fuel efficiency, with driving characteristics of a driver or an automatic driving system in consideration. A vehicle control device includes: a driving characteristic computation unit that computes driving characteristic parameters of an own vehicle on the basis of an intervehicle distance between a preceding vehicle and the own vehicle; a preceding vehicle state prediction unit that predicts a state of the preceding vehicle after a predetermined amount of time on the basis of the intervehicle distance; and a driving state estimation unit that estimates a driving state of the own vehicle after the predetermined amount of time on the basis of the state of the preceding vehicle after the predetermined amount of time predicted by the preceding vehicle state prediction unit and the driving characteristic parameters of the own vehicle computed by the driving characteristic computation unit.
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公开(公告)号：US11795889B2
公开(公告)日：2023-10-24
申请号：US17426961
申请日：2020-02-07
Applicant: Hitachi Astemo, Ltd.
Inventor： Kunihiko Suzuki
CPC classification number: F02D41/2438 , F01N11/002 , F01N11/007 , F02D41/2474 , F01N2550/02 , F02D2200/0802
Abstract: To keep catalyst purification efficiency high and prevent deterioration of emission performance. Therefore, an internal combustion engine control device according to an aspect of the present invention includes: an oxygen storage ratio calculation unit that calculates an oxygen storage ratio of a catalyst based on a catalytic reaction model having at least a detection value of a first exhaust gas sensor disposed on an upstream side of the catalyst as an input; a statistical model calculation unit that predicts a catalyst downstream exhaust gas concentration using a statistical model having an oxygen storage ratio as an input and a catalyst downstream exhaust gas concentration as an output; and an air-fuel ratio correction amount calculation unit that calculates an air-fuel ratio correction amount of an air-fuel mixture of an internal combustion engine based on a future catalyst downstream exhaust gas concentration calculated by the statistical model calculation unit.
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公开(公告)号：US20230327586A1
公开(公告)日：2023-10-12
申请号：US18023786
申请日：2021-09-01
Applicant: Hitachi Astemo, Ltd.
Inventor： Masaki HANO
Abstract: There are provided a brushless motor control device and a brushless motor control method that can suppress occurrence of step-out caused by reverse rotation, in low-speed sensorless control of a brushless motor. The brushless motor control device applies, to a brushless motor, a positive pulse generating torque in a rotation direction of the brushless motor and a negative pulse generating torque in a reverse rotation direction, and detects a rotation direction by using a magnetic saturation voltage generated when the positive and negative pulses are applied. The control device sets an upper limit value to a motor application duty represented by a value obtained by subtracting an application duty of the negative pulse from an application duty of the positive pulse.
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