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公开(公告)号：US12038063B2
公开(公告)日：2024-07-16
申请号：US17417400
申请日：2019-11-12
Applicant: Hitachi Astemo, Ltd.
Inventor： Mikio Yamashita
Abstract: A valve seat member is provided in a cap member. A first sub valve is provided in another side chamber. A second sub valve is provided in a cap chamber formed between a bottom portion of the cap member and the valve seat member. In a second passage, an orifice is disposed on an upstream side or a downstream side from the first sub valve in flow by which the first sub valve is opened. In a region in which a piston speed is low, a valve of a second damping force generating mechanism is opened in a state in which a valve of a first damping force generating mechanism is closed. In a speed region in which the piston speed is higher than in another region, the valve of the first damping force generating mechanism and the valve of the second damping force generating mechanism are both opened.
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92.发明公开公开(公告)号：US20240227771A1
公开(公告)日：2024-07-11
申请号：US18559838
申请日：2022-02-09
Applicant: HITACHI ASTEMO, LTD.
Inventor： Takaya TSUKAGOSHI , Takafumi HARA , Katsuhiro HOSHINO , Shigehisa AOYAGI
Abstract: A motor control device controls driving of an AC motor that is connected to a power transformer that performs power transform from DC power to AC power and outputs a rotational driving force generated by driving using the AC power via a speed reducer, and includes a carrier generator that generates a carrier wave, a carrier frequency adjuster that adjusts a frequency of the carrier wave, and a gate signal generator that performs pulse width modulation on a voltage command according to a torque command using the carrier wave and generates a gate signal for controlling an operation of the power transformer, wherein the carrier frequency adjuster changes a phase difference between the voltage command and the carrier wave based on the torque command and a rotational speed of the AC motor, and adjusts the frequency of the carrier wave such that a difference between a meshing frequency of the speed reducer and a harmonic component of a fundamental harmonic current according to the voltage command falls within a predetermined range.
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公开(公告)号：US12030582B2
公开(公告)日：2024-07-09
申请号：US17697524
申请日：2022-03-17
Applicant: Hitachi Astemo, Ltd.
Inventor： Masato Tokuhara
IPC: B62K25/04 , B60G17/016 , B60G17/027
CPC classification number: B62K25/04 , B62K2025/044 , B62K2025/045
Abstract: A processing device is configured to perform a process of bringing a response speed of a first sensor close to a response speed of a second sensor when a value using a detection value of the first sensor is extracted at a timing determined by using an output value of the second sensor having a response speed different from that of the first sensor.
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公开(公告)号：US20240223035A1
公开(公告)日：2024-07-04
申请号：US18558086
申请日：2022-02-09
Applicant: Hitachi Astemo, Ltd.
Inventor： Ryouichi TAKAHATA , Masanori SAWAHATA , Shinji YAMAZAKI , Kenichi NAKAYAMA
Abstract: An object of the present invention is to provide a rotary electric machine capable of reducing a difference between a height of a first segment conductor and a height of a second segment conductor. A first segment conductor 121 having a first slot pitch and a second segment conductor 122 having a second slot pitch smaller than the first slot pitch are provided, the second segment conductor 122 includes a first leg portion 122A and a second leg portion 122B, the first leg portion 122A includes a slot insertion portion 122A0 and a first linear portion 122A2 connected to the slot insertion portion 122A0 and constituting a coil end portion, the second leg portion 122B includes a slot insertion portion 122B0 and a second linear portion 122B2 connected to the slot insertion portion 122B0 and constituting a coil end portion, and the second linear portion 122B2 is longer than the first linear portion 122A2.
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公开(公告)号：US20240217580A1
公开(公告)日：2024-07-04
申请号：US18558225
申请日：2022-02-28
Applicant: HITACHI ASTEMO, LTD.
Inventor： Koichi UEMURA , Taku TAKAHAMA
CPC classification number: B60W30/18163 , B60W30/12
Abstract: An object of the present invention is to execute steering control depending on a situation in an adjacent lane. A driving assistance device according to the present invention includes: at least one sensor (140) configured to acquire vehicle surrounding information; and at least one processor configured to: execute determination processing of determining whether a current situation is a first situation or a second situation based on the vehicle surrounding information; and execute steering control for driving a principal vehicle along a target track (TL) based on a result of the determination processing. The first situation is a situation in which the principal vehicle overtakes a first other vehicle traveling in a first adjacent lane. The second situation is a situation in which the principal vehicle is overtaken by the first other vehicle traveling in the first adjacent lane.
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Patent Agency Ranking
公开(公告)号：US12028993B2
公开(公告)日：2024-07-02
申请号：US17595423
申请日：2020-06-02
Applicant: Hitachi Astemo, Ltd.
Inventor： Ryo Akiba , Yoshio Kawai
CPC classification number: H05K5/0069 , H01R12/716 , H01R13/5202 , H05K5/0056 , H05K5/06 , H01R2201/26
Abstract: Provided is an electronic device capable of enhancing salt damage resistance. An electronic device includes a circuit board 3 on which an electronic component 2 is mounted, a housing 4 that houses the circuit board 3, a connector 5 that is mounted on the circuit board 3 and is exposed to an outside of the housing via a first opening portion 4a of the housing 4, a cover member 6 that constitutes a part of a case 131 of an external device 103 to hold the housing 4, and has a second opening portion 66a to which the connector 5 is fitted, and a seal member 8 that is interposed between the connector 5 and the cover member 6, and liquid-tightly seals the case 131 of the external device 103. The housing 4 has a first wall portion 18 extending toward the cover member 6 so as to cover a part of the connector 5 at a distance, and the cover member 6 has a second barrier portion 68 extending toward the housing 4 so as to cover a part of the connector 5 at a distance.
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公开(公告)号：US20240210178A1
公开(公告)日：2024-06-27
申请号：US18557351
申请日：2022-02-17
Applicant: HITACHI ASTEMO, LTD.
Inventor： Hideyuki KUME , Morihiko SAKANO , Takehito OGATA , Yuichi KOMORIYA , Hidehiro TOYODA
CPC classification number: G01C21/30 , B60W50/082 , G01C21/3837 , G06V20/56
Abstract: An object is to provide a map generation/self-position estimation device that can estimate the accuracy of self-position estimation using a generation map at the time of map generation without prior learning movement, installation of a known object in an environment, and addition of a sensor. Included are a data allocation unit 110 that allocates an output of a sensor to map data 210 and position estimation data 220 and calculates a true value of a relative position between data of the map data 210 and the position estimation data 220 based on a data allocation method, a map generation unit 120 that generates a generation map including a point group and a travel position of the own vehicle from the map data 210, a self-position estimation unit 130 that estimates a position attitude of the own vehicle on the generation map by associating the position estimation data 220 with the generation map, and an accuracy evaluation unit 140 that evaluates accuracy of the position attitude of the own vehicle on the generation map estimated by the self-position estimation unit 130 from the true value of the relative position between the data.
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公开(公告)号：US20240208491A1
公开(公告)日：2024-06-27
申请号：US18555803
申请日：2022-03-09
Applicant: HITACHI ASTEMO, LTD.
Inventor： Hiroki KATO , Satoshi KASHIWAMURA
IPC: B60W30/09 , B60W30/095 , B60W50/00
CPC classification number: B60W30/09 , B60W30/0956 , B60W50/0097 , B60W2050/0022 , B60W2520/06 , B60W2520/14 , B60W2540/18 , B60W2554/4041
Abstract: The present disclosure provides a vehicle control device capable of preventing an erroneous operation of an advanced driving assistance system while ensuring safety. A vehicle control device 110 includes a course prediction unit F1, a collision prediction unit F3, a vehicle control unit F5, and a control intervention adjustment unit F4. The course prediction unit F1 predicts a turning course of a vehicle as a steady circular turning course based on a steering angle θ. The collision prediction unit F3 calculates a collision margin time (TTC) between a target detected by an external environment sensor of the vehicle and the vehicle that travels on the steady circular turning course, and calculates a predicted collision lateral position CLL of the target with respect to a vehicle width center position of the vehicle. The vehicle control unit F5 performs collision avoidance control of a vehicle 100 when the collision margin time is shorter than a control intervention threshold value TH. The control intervention adjustment unit F4 adjusts the control intervention threshold value TH. The control intervention adjustment unit F4 reduces the control intervention threshold value when the predicted collision lateral position CLL with respect to the vehicle width center position of the vehicle is in a direction opposite to a direction of a steering angular speed which is a time change rate of the steering angle θ.
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公开(公告)号：US12019465B2
公开(公告)日：2024-06-25
申请号：US17782135
申请日：2020-09-17
Applicant: HITACHI ASTEMO, LTD.
Inventor： Nozomi Kasahara , Yutaka Uematsu , Hideyuki Sakamoto , Hidetatsu Yamamoto
CPC classification number: G06F1/10 , G06F1/12 , H04J3/0638
Abstract: An electronic control device is connected via a cable to each of a plurality of sensors which outputs a sensor output for each data acquisition cycle determined in advance in accordance with a clock signal. The electronic control device includes a power supply unit configured to supply power to the sensor via the cable, an acquisition unit configured to acquire a feature amount directly or indirectly indicating a magnitude of radiation noise from at least one sensor among the plurality of sensors, a phase difference decision unit configured to decide a phase difference of a data acquisition cycle for each of the plurality of sensors based on the feature amount, and a control unit configured to transmit the phase difference to each of the plurality of sensors.
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公开(公告)号：US12018622B2
公开(公告)日：2024-06-25
申请号：US18011977
申请日：2021-06-23
Applicant: Hitachi Astemo, Ltd.
Inventor： Yuta Koike , Masayuki Saruwatari , Yuusuke Kihara , Akihiro Komori
CPC classification number: F02D13/0238 , F01L1/352 , F01L1/356 , F02D13/02 , F02D13/08 , F01L2800/01 , F01L2800/03 , F01L2820/032
Abstract: An object of the present invention is to obtain a controller device for a variable valve timing apparatus capable of controlling a phase to an arbitrary fixed valve timing from immediately before an internal combustion engine stops until after the internal combustion engine has stopped. The controller device for the variable valve timing apparatus according to the present invention performs, during engine stop processing of the internal combustion engine, normal control of changing the relative rotational phase of a camshaft to a most advanced position or a most retarded position when the rotational speed of a crankshaft is equal to or more than a first threshold, and low-speed control of fixing a current or a voltage supplied to the motor to be constant to maintain the relative rotational phase of the camshaft at the most advanced position or the most retarded position in a period from when the rotational speed of the crankshaft is lower than the first threshold until the rotational speed becomes zero.
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