Patents Assigned to HITACHI ASTEMO, LTD.
  • Publication number: 20240127567
    Abstract: Provided are a detection frame position accuracy improvement system and a detection frame position correction method capable of estimating a detection frame position with high accuracy using information before and after a target frame.
    Type: Application
    Filed: February 25, 2022
    Publication date: April 18, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Goshi SASAKI, So SASATANI
  • Publication number: 20240126528
    Abstract: Provided is a redundant system capable of executing a start request received during update of a microcomputer control program even when an external nonvolatile memory is employed in a redundant system in which one load is controlled by a plurality of control circuits having a redundant configuration, the redundant system being low in cost and excellent in responsiveness. In the redundant system that controls one load by a plurality of control systems having a redundant configuration, when an update program signal for the plurality of control systems is received, update of a control program for each of the plurality of control systems in a predetermined order is individually executed, and when a start request of the load is received during the execution of the update of a control program of one predetermined system, the load is controlled by a system other than the one predetermined system, and during the control, the update of the control program of the one predetermined system is continued.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 18, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Yoshiaki MIZUHASHI, Mitsuhiko WATANABE, Yoshitaka ABE, Mamoru OGURA
  • Patent number: 11961780
    Abstract: A semiconductor module includes a semiconductor device that includes first and second fin bases having first and second connecting portions and a resin for sealing the outer peripheral side surfaces of first to fourth conductors, and a flow path forming body connected to the first and second connecting portions of the first and second fin bases. A first elastically deformed portion, which is elastically deformed, is provided such that a distance in a thickness direction between the outer peripheral ends of the first and second connecting portions becomes smaller than a distance in a thickness direction between intermediate portions of the first and second connecting portions. The resin is filled between the first and second connecting portions of the first and second fin bases are filled with the resin therebetween.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: April 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Nobutake Tsuyuno, Akira Matsushita, Yujiro Kaneko
  • Patent number: 11962238
    Abstract: Provided is a highly reliable electronic control unit capable of improving responsiveness of an output current of a switching power supply to load current variation and suppressing power supply voltage variation accompanying the load current variation at low cost and with high power efficiency. Provided are: a calculation unit that performs signal processing; a first power supply circuit that supplies a first power supply voltage to the calculation unit; and a second power supply circuit that supplies a second power supply voltage to the first power supply circuit. The calculation unit has a function of outputting a control signal when a change in a consumed current of the calculation unit exceeds a predetermined threshold, and changes any one or both of a control scheme of the first power supply circuit and the second power supply voltage according to the control signal.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Shigenobu Komatsu, Hideyuki Sakamoto
  • Patent number: 11961311
    Abstract: This on-vehicle system is to be mounted in a vehicle and is provided with an electronic control device and an externality recognition sensor. The externality recognition sensor is equipped with a sensing unit for acquiring pre-processing externality information through sensing operations. The on-vehicle system is further equipped with: a condition calculation unit that, on the basis of a vehicle position, a vehicle traveling direction, and map information, calculates a processing condition in which information specifying an area on a map is associated with processing priority of the pre-processing externality information acquired by the externality recognition sensor; and a processing object determination unit that, on the basis of the pre-processing externality information and the processing condition, creates externality information having a smaller amount of information compared with the pre-processing externality information.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: April 16, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Yuta Muto, Akira Kuriyama
  • Patent number: 11958480
    Abstract: An electronic control device comprises a sensor information acquisition unit which acquires state quantities including a position of an object to be measured using an output of a plurality of sensors, or calculates the state quantities of the object to be measured by using the output of the plurality of sensors, a storage unit which stores position determination information as a condition of a classification related to the position, a position determination unit which classifies the object to be measured by using the position determination information, and a fusion unit which determines, by referring to the state quantities, a match among a plurality of the objects to be measured which are classified identically by the position determination unit and which were measured by different sensors, and fuses the positions of the plurality of objects to be measured determined to be a match, wherein the objects to be measured are objects that can be measured by each of the plurality of sensors.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: April 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yuta Muto, Akira Kuriyama
  • Patent number: 11958462
    Abstract: An object of the present invention is to provide a brake control apparatus including a backup brake, which brake control apparatus makes it possible both to ensure deceleration, and to attain vehicle running stability. The present invention includes: a front-wheel-side braking mechanism 4 that includes a front-wheel-side electric hydraulic mechanism 6, and a hydraulic circuit system, and applies braking force to front wheels 2L, and 2R; a rear-wheel-side braking mechanism 5 that applies braking on a rear wheel side; a backup brake that is actuated in accordance with a switch to the hydraulic circuit system 15 when the front-wheel-side electric hydraulic mechanism 6 fails, and applies braking force to the front wheels 2R, and 2L; and a skid determination threshold setting section 43 that sets a skid determination threshold.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takahiro Ito, Kenichiro Matsubara, Wataru Yokoyama
  • Patent number: 11958464
    Abstract: A control unit determines a final target wheel cylinder hydraulic pressure of a wheel cylinder based on a stroke-target wheel cylinder hydraulic pressure if an acquired simulator stroke position is smaller than a stroke limit, and determines the final target wheel cylinder hydraulic pressure of the wheel cylinder based on the stroke-target wheel cylinder hydraulic pressure and a master cylinder hydraulic pressure-target wheel cylinder hydraulic pressure if the acquired simulator stroke position is equal to or greater than the stroke limit.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: April 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Chikara Nishiura
  • Patent number: 11958459
    Abstract: An object of the present invention is to appropriately control a clearance amount by correcting an estimation error of a contact position caused by a delay time difference between output signals of sensors, and to establish both improvement of fuel efficiency due to prevention of drag of a brake pad during non-braking and reduction in response time during braking. A brake system includes a brake disc, a brake pad, a piston, a drive mechanism, a position sensor that detects a position of the piston, a thrust sensor that detects a thrust by which the brake pad presses the brake disc, and a brake control unit that adjusts a braking force by controlling the drive mechanism.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: April 16, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Kyoshiro Itakura, Toshiyuki Ajima, Kenichiro Matsubara, Daisuke Goto
  • Publication number: 20240116484
    Abstract: Provided is a brake control device which reliably generates wheel cylinder fluid pressure in all the wheels FR to RR even at the time of failure of the brake control device, can reliably decelerate or stop a vehicle, has a simplified system configuration, and has high reliability for automatic driving. A brake device 101 of the present invention includes a first fluid pressure unit 102p which supplies brake fluid to first wheel cylinders 118a and 118d, a second fluid pressure unit 102s which supplies brake fluid to second wheel cylinders 118b and 118c, and a connection pipe 119 which connects the first fluid pressure unit and the second fluid pressure unit to allow the brake fluid to flow. The first fluid pressure unit and the second fluid pressure unit open a first shut-off valve 104p and a second shut-off valve 104s, respectively, in a case where a failure is detected in at least one of the first fluid pressure unit and the second fluid pressure unit.
    Type: Application
    Filed: March 4, 2022
    Publication date: April 11, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Asahi WATANABE, Toshiya OSAWA, Masaru KONISHI
  • Publication number: 20240120793
    Abstract: Provided are a stator for a rotary electric machine and the rotary electric machine. The stator includes a stator core, and a stator winding formed in a plurality of phases, the stator winding including a slot conductor and a crossover conductor configured to connect ends of a pair of the slot conductors, the ends placed at a same side of the pair of slot conductors.
    Type: Application
    Filed: August 31, 2021
    Publication date: April 11, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Miku TAKAHASHI, Yuji KOBAYASHI, Yasuyuki SAITO, Noriaki HINO, Shinji YAMAZAKI, Takuya MIYAGI, Keisuke TATENO
  • Patent number: 11956700
    Abstract: The present invention provides a wireless communication system capable of performing communication between wireless communication apparatuses respectively mounted on vehicles performing platooning is characterized in that a frequency channel used in data transmission and reception between an own vehicle and a preceding vehicle adjacent to the own vehicle, and a frequency channel used in data transmission and reception between the own vehicle and a succeeding vehicle adjacent to the own vehicle are different from each other.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: April 9, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Satoshi Tamaki
  • Patent number: 11953075
    Abstract: A damper device that suppresses arc discharge between electrodes generated by bubbles in an electro-rheological fluid, includes an inner tube housed in an outer tube forming an outer shell of a damper device. An electrode tube is arranged between the outer tube and the inner tube. An electro-rheological fluid is sealed in the outer tube. The inner tube and the electrode tube constitute a cathode and an anode, respectively, and apply a voltage to the electro-rheological fluid located between the inner tube and the electrode tube. An insulating layer is provided on a surface of the electrode tube on a side facing the inner tube or on a surface of the inner tube on a side facing the electrode tube. When a maximum voltage applied to the electro-rheological fluid is Vmax (V), a thickness t (m) of the insulating layer is set to satisfy Formula (1).
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 9, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Junpei Kusukawa, Michihiro Asanuma, Motohiro Hirao, Hiroshi Ooka, Tatsuro Nambu
  • Patent number: 11956900
    Abstract: An object of the present invention is to improve the component mounting efficiency. An electronic control unit of the present invention includes: a power board 23 that includes a first insertion hole portion R1A having a plurality of holes 23Aa-2U, 23Aa-2V, and 23Aa-2W through which a coil wire of a first system is inserted and a second insertion hole portion R2A having a plurality of holes 23Aa-2U, 23Aa-2V, and 23Aa-2W through which a coil wire of a second system is inserted; a control board 25 provided on an upper part of the power board 23; and a board-to-board connector 105 that electrically connects the power board 23 and the control board 25. The first insertion hole portion R1A and the second insertion hole portion R2A are collectively arranged on the same side of the power board 23.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: April 9, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tomohiro Fukuda, Yoshiaki Mizuhashi
  • Patent number: 11956908
    Abstract: Reliability is to be improved. A control board 2 on which an electronic component 1 is mounted and an enclosure 3 in which the control board 2 is sealed with sealing resin 5 are included, wherein the enclosure 3 has a shape in which a volume of resin on one surface side of the control board 2 is larger than a volume of resin on the other surface side, a gate mark 21a is formed in the enclosure 3, a length of the gate mark 21a in a thickness direction of the control board 2 is larger than a thickness of the control board 2, the control board 2 is located such that a side surface partially overlaps a projection region of the gate mark 21a, and the control board 2 is arranged toward the other surface side relative to a center of the gate mark 21a.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: April 9, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Yujiro Kaneko
  • Patent number: 11955905
    Abstract: A three-phase/two-phase conversion unit 43 generates a composite vector i?? of three-phase AC currents based on AC currents iu, iv, and iw. An electrical angle calculation unit 44 outputs the electrical angle of the composite vector i?? with reference to the U-phase AC current iu. A quadrant calculation unit 45 obtains which quadrant of the first to sixth quadrants partitioned in advance the acquired electrical angle corresponds to, confirms whether the composite vector i?? passes through the set quadrant, and outputs quadrant information thereof. A failure detection unit 47 determines whether the composite vector i?? has rotated from the first quadrant to the sixth quadrant, and when there is a quadrant that has not been passed, considers that it is a failure state, specifies a failure part of the switching element from the relationship between the electrical angle and the failure part, and outputs failure information to a PWM signal generation unit 42.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: April 9, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yasuhiro Ishikawa, Ryohichi Inada
  • Patent number: 11956933
    Abstract: No consideration is given to heat transferred from a semiconductor module to a capacitor via a bus bar module. The heat generated by a semiconductor module (1) is transferred to a bus bar module (3) via a DC terminal (1A) of the semiconductor module (1). As illustrated in FIG. 4(B), the heat transferred to the bus bar module 3 is then transferred to the pressing member 5 via the annular conductor 8 and the bolt 5A. Since the pressing member 5 is in close contact with the second cooler 2B, the heat transferred to the pressing member 5 is cooled by the second cooler 2B. On the other hand, the heat transferred to the convex portion 6A of the housing 6 is transferred to the first cooler 2A via the housing 6 and cooled. As a result, in the configuration in which a capacitor (4) is connected to the semiconductor module (1) via the bus bar module (3), the heat transferred from the semiconductor module (1) to the capacitor (4) can be suppressed.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: April 9, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takashi Hirao, Takeshi Tokuyama, Noriyuki Maekawa, Akira Matsushita, Toshiya Satoh
  • Publication number: 20240109427
    Abstract: An electric vehicle control device that controls a vehicle traveling via a transmission coupled to a plurality of electric motors as a drive source, the electric vehicle control device including: a controller configured to control a first electric motor and a second electric motor that are in contact with a first transmission and a second transmission incorporating a liquid medium, respectively, in which in a heating period in which the first transmission or the second transmission is heated, the controller drives and controls one of the first electric motor and the second electric motor with a powering torque obtained by increasing a heating component torque to a required torque of the electric motor, and controls an other of the first electric motor and the second electric motor with a torque obtained by subtracting the heating component torque from the required torque of the electric motor.
    Type: Application
    Filed: September 30, 2021
    Publication date: April 4, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventor: Hiroaki TAKUMA
  • Patent number: 11945428
    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.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: April 2, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Ryusuke Hirao, Nobuyuki Ichimaru
  • Patent number: 11946425
    Abstract: The present invention provides an engine control device that sets a cam signal read value according to a cam signal output from a cam angle sensor, in a front-rear determination position; if the cam signal read value is alternately changed between 1 (LOW) and 2 (HIGH) in the front-rear determination position, sets the cam signal read value to the cam signal expected value; if the cam signal read value is not alternately changed between 1 (LOW) and 2 (HIGH), inverts the cam signal expected value in the control cycle of the previous time, and sets the resultant cam signal expected value; then, when the cam signal read value and the cam signal expected value are equal to each other, distinguishes the cylinders by using the cam signal read value; and when the cam signal read value and the cam signal expected value are different from each other, distinguishes the cylinders by using the cam signal expected value.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: April 2, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Sho Sato, Akihito Kubota