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公开(公告)号：US20220398089A1
公开(公告)日：2022-12-15
申请号：US17783530
申请日：2020-11-20
Applicant: HITACHI ASTEMO, LTD.
Inventor： Shota GUNJI , Yusuke KOGURE , Kentarou YOSHIMURA
Abstract: Matching programs are activated by a plurality of calculation units. A vehicle control device that controls a vehicle includes a plurality of calculation units that executes calculation processing for vehicle control; and a plurality of program storage areas that store a plurality of programs in which a procedure of the calculation processing is defined, wherein the main calculation unit includes a main program activation unit that activates one main program from the plurality of main programs, and the sub-calculation unit includes a sub-program selection unit that selects the sub-program to be activated by the sub-calculation unit based on an activation result of the main program activation unit, and a sub-program activation unit that activates one sub-program based on a selection result of the sub-program selection unit.
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公开(公告)号：US20220390406A1
公开(公告)日：2022-12-08
申请号：US17775166
申请日：2020-10-20
Applicant: HITACHI ASTEMO, LTD.
Inventor： Eisaku FUKUCHI , Takahiro MIKI , Hiroaki HOSHIKA
IPC: G01N27/22
Abstract: A diagnostic function of a humidity sensor is exposed to the outside and the humidity sensor is likely to deteriorate.
An aspect of the present invention includes: a capacitance-voltage conversion circuit which includes a plurality of reference capacitors having different pieces of capacitance and a switch which switches the reference capacitors and outputs a voltage according to the capacitance of a humidity sensor; and a diagnosis unit which compares an output voltage of the capacitance-voltage conversion circuit with a reference voltage obtained from a reference characteristic of the humidity sensor and diagnoses the humidity sensor based on a comparison result. Also, the diagnosis unit changes the output voltage by changing the capacitance of the capacitance-voltage conversion circuit using the switch in a state in which the output voltage of the capacitance-voltage conversion circuit is within a certain range and compares the changed output voltage with the reference voltage.-
公开(公告)号：US20220388485A1
公开(公告)日：2022-12-08
申请号：US17762131
申请日：2020-08-27
Applicant: Hitachi Astemo, Ltd.
Inventor： Ryusuke HIRAO , Nobuyuki ICHIMARU
IPC: B60T8/1755 , B60G17/016 , B60W30/04 , B60W40/109 , B60W40/11 , B60W40/112 , B60W40/114 , B60W10/22 , B60W10/18
Abstract: In a vehicle, GV control and M+ control are executed by generating braking/driving forces from a brake hydraulic pressure control device and a drive device during steering. A controller estimates (calculates), by a posture estimation unit, a pitch amount and a roll amount (predicted pitch rate and predicted roll rate) that occur in the vehicle through use of a moment command of the M+ control and a longitudinal G command of the GV control. The controller adjusts damping forces of damping force variable dampers through use of the estimated pitch amount and the estimated roll amount (predicted pitch rate and predicted roll rate) so that a pitch amount calculated by a pitch control unit and a roll amount calculated by a roll suppression unit approach respective target values.
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公开(公告)号：US20220366699A1
公开(公告)日：2022-11-17
申请号：US17624168
申请日：2020-04-16
Applicant: Hitachi Astemo, Ltd.
Inventor： Takeo SHIBATA
Abstract: Example implementations described herein are directed to integration of far infrared cameras in a vehicle system to detect objects based on relative temperature of objects. Such implementations can improve accuracy when paired, for example, with classification systems that classify objects based on the shape of the object, as both the shape and relative temperature can be used to ensure that the classification is accurate. Further, example implementations can synchronize far infrared cameras with other sensor systems to determine distance, energy, and absolute temperature of an object, which can also be used to enhance classification. Such classifications can then be provided to an advanced driver assistance systems (ADAS), which can control the vehicle system in accordance with the object classification.
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公开(公告)号：US20220357163A1
公开(公告)日：2022-11-10
申请号：US17622602
申请日：2020-07-03
Applicant: HITACHI ASTEMO, LTD.
Inventor： Shigenori HAYASE , Akira KURIYAMA
Abstract: An electronic control unit includes: a target information acquiring section that acquires information about a target around a user's vehicle; a storage section that stores management information related to at least either an entrance position or exit position of the target in a predetermined subject area on a basis of the information about the target acquired by the target information acquiring section; and a driving trajectory planning section that plans a driving trajectory of the user's vehicle on a basis of the management information stored in the storage section.
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Patent Agency Ranking
公开(公告)号：US20220354006A1
公开(公告)日：2022-11-03
申请号：US17622174
申请日：2020-05-13
Applicant: HITACHI ASTEMO, LTD.
Inventor： Yuki NAKAMURA , Masahiro TOYAMA , Isao HODA , Hiroki FUNATO , Umberto PAOLETTI , Hideyuki SAKAMOTO , Yutaka UEMATSU
Abstract: A signal transmission circuit includes: a circuit board stored in a housing; a connector which is mounted on the circuit board and includes a first signal terminal and a first ground terminal; and an integrated circuit which is mounted on the circuit board and includes a second signal terminal and a second ground terminal. The first signal terminal and the second signal terminal are connected to each other by a signal wiring arranged on the circuit board. The first around terminal and the second ground terminal are connected to each other by a ground wiring arranged in a predetermined range including a portion immediately above or immediately below the signal wiring in the circuit board. At least a part of the ground wiring immediately above or immediately below the signal wiring has a high impedance structure formed to be wider than the signal wiring and narrower than a combined width of the first signal terminal and the first ground terminal.
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公开(公告)号：US20220352786A1
公开(公告)日：2022-11-03
申请号：US17293144
申请日：2019-12-13
Applicant: Hitachi Astemo, Ltd.
Inventor： Toshiki TAKAHASHI , Takuya MIYAGI , Hayato FUJITA , Yuichiro BABA
IPC: H02K5/24
Abstract: An object of the present invention is to promote weight reduction while improving torsional stiffness of a motor case of a rotary electric machine. A motor case accommodates a stator, a rotor facing an inner periphery of the stator, and a rotating shaft coupled to the rotor. The motor case includes a peripheral wall which is formed in a tubular shape and has a space accommodating the stator and the rotating shaft on an inside, a flange portion which is formed at one end of the peripheral wall and is coupled to an outside, and damping ribs which are formed at an outer periphery of the peripheral wall, are formed between a position crossing the outer periphery of the peripheral wall and the flange portion on an extension of the rotating shaft in a radial direction from an end portion of the stator, and are constituted by a plurality of ribs.
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公开(公告)号：US11487649B2
公开(公告)日：2022-11-01
申请号：US17293526
申请日：2020-01-30
Applicant: HITACHI ASTEMO, LTD.
Inventor： Yuji Fukami
IPC: G06F11/36
Abstract: A system for accelerating testing of a software program includes a virtual computer and a test execution control computer. The virtual computer imitates a microcomputer equipped with a software program to be tested. The test execution control computer divides a plurality of test scenarios into common phases; to create and store a tree structure mapping out the plurality of test scenarios, the tree structure where the common phase is followed by a non-common phase, the common phase branched out into the non-common phases. The virtual computer executes the common phase in accordance with the tree structure, and stores as a snapshot a state of the virtual computer. The virtual computer to uses the snapshot to reproduce the state of the virtual computer that has executed the common and non-common phases, when the test execution control computer causes the virtual computer to execute a second test scenario.
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公开(公告)号：US11486511B2
公开(公告)日：2022-11-01
申请号：US17391568
申请日：2021-08-02
Applicant: Hitachi Astemo, Ltd. , Nuvoton Technology Corporation Japan
Inventor： Atsushi Ogawa , Motoaki Kato , Kengo Nomura , Keisuke Kuroda , Makoto Kawajiri
Abstract: An electromagnetic valve drive device which supplies a hold current with a prescribed fluctuation range to an electromagnetic coil of an electromagnetic valve after a current peak when a supply of electricity starts has passed includes: a power supplier which intermittently applies a drive voltage to the electromagnetic coil; a detector which detects the hold current; a first comparator which compares a detected current by the detector with a first threshold value; a filter which performs integration processing on an output of the first comparator; a second comparator which compares an output of the filter with a second threshold value to generate an output signal used for generating a control signal for controlling the power supplier; and a control signal generator which generates the control signal for controlling the power supplier based on the output signal of the second comparator, wherein the filter is a count-up/down type digital filter.
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公开(公告)号：US20220345060A1
公开(公告)日：2022-10-27
申请号：US17641179
申请日：2020-08-14
Applicant: HITACHI ASTEMO, LTD.
Inventor： Takafumi HARA , Toshiyuki AJIMA , Katsuhiro HOSHINO , Noriyuki MAEKAWA
Abstract: Conventionally, there is a problem that switching loss of an inverter increases in a case where a change such as improvement in a switching frequency is involved. The battery voltage E and the torque command T* are input to the first current command generation unit 111. The battery voltage E, the torque command T*, and a voltage utilization rate obtained by dividing a line voltage effective value by a battery voltage (DC voltage) are input to a second current command generation unit 112. A magnet temperature Tmag of a rotor magnet is input to a current command selection unit 113, and a current command output from the first current command generation unit 111 is selected in normal operation, and the second current command generation unit 112 is selected in a case where the magnet temperature exceeds a predetermined value. The second current command generation unit 112 is configured not to obtain the voltage utilization rate of 0.3 to 0.4.
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