Patents Assigned to HITACHI ASTEMO, LTD.
  • Patent number: 11970152
    Abstract: A vehicle pedal stroke detection apparatus acquires a first value based on a physical amount regarding a magnetic flux of a magnet that is output from a stroke sensor. The first value is a physical amount regarding a magnitude of a magnetic flux density of the magnet with respect to a displacement of a push rod. Then, the vehicle pedal stroke detection apparatus compares the first value and a second value. The second value is a preset physical amount regarding the magnitude of the magnetic flux density of the magnet with respect to the displacement of the push rod.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: April 30, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Koki Takimoto, Shu Kato
  • Patent number: 11973386
    Abstract: Since the shape of the insulating paper is complicated, a forming and bending step of the insulating paper is required, and further there is a step of inserting the insulating paper in the middle of coil forming, which causes a problem of damaging the insulating paper. A fitting state of an insulating paper 201 into the inter-coil gap has an annular taper shape in which a diameter dimension D1 of an annular opening of the insulating paper 201 on a coil end tip side is long, and a diameter dimension d2 of an annular opening of the insulating paper 201 on a stator end face side on the opposite side is short. The insulating paper 201 is made to follow the tapered shape of the inter-coil gap 140 between an inner peripheral coil 120 and an outer peripheral coil 130, and the insulating paper 201 is fitted in a state inclined from the coil end tip side to the stator end face side with respect to an axial direction of the stator 20.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: April 30, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Kenji Nakayama, Ryoji Kobayashi, Yuichiro Baba
  • Publication number: 20240133468
    Abstract: A water-impermeable cover includes an opening part extending toward an opening part of a holding ring of a stub shaft of a propeller shaft, and is disposed to face the opening part of the holding ring. The water-impermeable cover is fixed at a position to face the opening part of the holding ring of the stub shaft, and the opening part of the water-impermeable cover extends to approach the opening part of the holding ring: therefore, even if muddy water etc. scatters obliquely toward the opening part of the holding ring, the risk of muddy water etc. entering the opening part of the holding ring is reduced, and as a result, also the risk of muddy water etc. entering an interior of a center bearing is reduced.
    Type: Application
    Filed: December 16, 2021
    Publication date: April 25, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Shoichi ICHIKAWA, Daiki TSUTSUMI, Toshiyuki MASUDA, Kenichiro ISHIKURA
  • Publication number: 20240137478
    Abstract: A stereo camera apparatus includes a housing, a first camera unit attached to the housing, a second camera unit attached to the housing, a processing device that performs image processing by using captured images acquired by capturing of the first camera unit and the second camera unit, and a circuit board on which the processing device is mounted. In the housing, a base length direction of the first camera unit and the second camera unit is a longitudinal direction, the housing and the circuit board are bonded to each other by an adhesive, and in a region in the housing, onto which the adhesive is applied, a length in the base line length direction is shorter than a length in an orthogonal direction that is a direction perpendicular to the base length direction.
    Type: Application
    Filed: September 16, 2020
    Publication date: April 25, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Akihiro YAMAGUCHI, Hidenori SHINOHARA, Kenichi TAKEUCHI
  • Patent number: 11967912
    Abstract: An object of the present invention is to provide a motor control device capable of estimating a delay with high accuracy even in a case where there is a fluctuation in disturbance torque or delay time and of suppressing the influence of the delay. For this end, the present invention includes a motor MTR, an ECU 2 that controls the rotation of the motor MTR, and an ECU 1 that sends a torque command to the ECU 2 based on a command value. The ECU 1 includes a disturbance estimation block 100 and a delay estimation block 200. The disturbance estimation block 100 estimates disturbance torque (?d) using a torque command input to the ECU 2 and a feedback value of the motor MTR. The delay estimation block 200 estimates a delay using a torque command output from the ECU 1, the feedback value of the motor MTR, and the disturbance torque (?d).
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd
    Inventors: Hiroaki Sato, Toshiyuki Ajima, Kenichiro Matsubara, Daisuke Goto
  • Patent number: 11967915
    Abstract: The vibration and noise generated in a permanent magnet synchronous motor are effectively suppressed. A motor control device 1 comprises: a triangular wave generation unit 17 which generates a triangular wave signal Tr that is a carrier wave, a carrier frequency adjustment unit 16 which adjusts a carrier frequency fc that represents a frequency of the triangular wave signal Tr, and a gate signal generation unit 18 which performs pulse-width modulation on three-phase voltage commands Vu*, Vv*, Vw* according to a torque command T* using the triangular wave signal Tr, thereby generating a gate signal for controlling an operation of an inverter. The carrier frequency adjustment unit 16 adjusts the carrier frequency fc so as to change a voltage phase error ??v representing a phase difference of the three-phase voltage commands Vu*, Vv*, Vw* and the triangular wave signal Tr based on the torque command T*, and a rotation speed ?r of a motor.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takaya Tsukagoshi, Takafumi Hara, Katsuhiro Hoshino, Toshiyuki Ajima
  • Patent number: 11968021
    Abstract: In a wireless communication device, which is mounted on a vehicle and performs wireless communication with a wireless communication device as a communication target using a plurality of frequency channels, the plurality of frequency channels includes a first channel and a second channel, and the first channel uses at least a radio signal of a polarization plane orthogonal to a polarization plane of a radio signal in the second channel.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Satoshi Tamaki
  • Patent number: 11967584
    Abstract: A power semiconductor device includes an insulating substrate on which a first conductor layer is arranged on one surface, a first conductor that is connected to the first conductor layer via a first connecting material, and a semiconductor element that is connected to the first conductor via a first connecting material. When viewed from a direction perpendicular to an electrode surface of the semiconductor element, the first conductor includes a peripheral portion formed larger than the semiconductor element. A first recess is formed in the peripheral portion so that a thickness of the first connecting material becomes thicker than other portions.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Hiromi Shimazu, Yujiro Kaneko, Toru Kato, Akira Matsushita, Eiichi Ide
  • Patent number: 11964726
    Abstract: A shock absorber includes: a damper tube accommodating a piston in a reciprocally movable manner; a suspension spring for urging the damper tube and a piston rod in opposite directions; a first male screw provided on an outer peripheral surface of the damper tube; a first nut screwed into the first male screw so as to enable a spring load of the suspension spring to be adjusted; a second nut screwed into the first male screw so as to enable a position of the first nut in an axial direction of the damper tube to be fixed; a second male screw having a reverse screw configuration to the first male screw and provided on the outer peripheral surface of the damper tube; and a damper head screwed into the second male screw so as to enable the damper head to cover one end portion of the damper tube.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: April 23, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Yuka Kubotera
  • Patent number: 11965760
    Abstract: An object of the present invention is to provide a compact air flow rate measuring device with improved stain resistance. A physical quantity detecting device of the present invention includes: a semiconductor element having a flow rate detection unit 205; a circuit board 207 supporting the semiconductor element; and a conductive cover 202 fixing the circuit board 207, and the semiconductor element is fixed to the circuit board 207 such that the flow rate detection unit 205 faces the cover 202.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 23, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Takayuki Yogo, Binti Haridan Fatin Farhanah, Akira Uenodan, Noboru Tokuyasu, Takahiro Miki, Hiroaki Hoshika
  • Patent number: 11964667
    Abstract: In a vehicle control device, a vehicle control method, and a vehicle control system according to the present invention, in control of a motion of a vehicle which is based on a signal relating to a target trajectory and a signal relating to a traveling state, a target traveling state of the vehicle after a predetermined time period corresponding to a delay element in the control of the motion of the vehicle is predicted, and a command for achieving the predicted target traveling state is output to an actuator configured to control the motion of the vehicle, thereby suppressing occurrence of a deviation of a traveling trajectory from the target trajectory and occurrence of an unstable behavior, for example, meandering, due to the delay element in a vehicle motion control system which is based on the target trajectory.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Kentaro Ueno
  • Patent number: 11965761
    Abstract: Provided is a highly reliable thermal flow meter. In a thermal flow meter 20, a flow rate detection element 321 that detects an air flow rate, and a conductive coating film 400 containing a conductive substance and a resin as constituent elements are provided on at least a part of a portion provided in an auxiliary passage 135 on a surface facing a detection surface 322 of the flow rate detection element 321.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Mizuki Shibata, Takayuki Yogo, Akira Uenodan, Hiroyuki Abe, Binti Haridan Fatin Farhanah
  • Patent number: 11965567
    Abstract: This disc brake includes a cylinder bore into which a piston is fitted, a seal groove provided in the cylinder bore as an annular groove, and a seal member which has a rectangular cross section shape and which is fitted into the seal groove and seal a space between the piston and the cylinder bore. The seal groove includes a bottom surface portion, a side surface portion, and a chamfered portion. The chamfered portion is formed to expand an opening of the seal groove in the axial direction of the cylinder bore and has two types of curvature radii (r1 and r2).
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: April 23, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Shoichi Noguchi, Shigeru Hayashi, Satoshi Nakamura, Toshiko Watanabe
  • 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
  • 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
  • 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: 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: 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: 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: D1023843
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Yuto Suzuki