公开(公告)号：US20240286618A1

公开(公告)日：2024-08-29

申请号：US18565467

申请日：2022-02-08

Applicant: Hitachi Astemo, Ltd.

Inventor： Morihiko SAKANO ,  Hideyuki KUME ,  Takehito OGATA ,  Hidehiro TOYODA

IPC: B60W40/06 ,  B60W40/11 ,  B60W40/112 ,  G06V20/56

CPC classification number: B60W40/06 ,  B60W40/11 ,  B60W40/112 ,  G06V20/588 ,  B60W2420/403 ,  B60W2520/16 ,  B60W2520/18 ,  B60W2556/35

Abstract: A sensing device includes a first common image pickup region observation unit that observes a first region in a periphery of a host vehicle from information of a common image pickup region acquired by at least a first sensor and a second sensor having the common image pickup region, a second common image pickup region observation unit that observes a second region different from the first region from information of a common image pickup region acquired by at least a third sensor and a fourth sensor having the common image pickup region, a coordinate integration unit that integrates a geometric relationship between the sensors with coordinates of pieces of information observed in the first region and the second region, and a road surface estimation unit that estimates a relative posture between each sensor and a road surface including a pitch angle and a roll angle of the host vehicle based on point group information calculated from the integrated coordinates.

公开(公告)号：US12074542B2

公开(公告)日：2024-08-27

申请号：US17641179

申请日：2020-08-14

Applicant: HITACHI ASTEMO, LTD.

Inventor： Takafumi Hara ,  Toshiyuki Ajima ,  Katsuhiro Hoshino ,  Noriyuki Maekawa

IPC: H02P27/12 ,  H02P21/16 ,  H02P21/22 ,  B60K1/00 ,  B60K6/26

CPC classification number: H02P21/16 ,  H02P21/22 ,  H02P27/12 ,  B60K1/00 ,  B60K6/26 ,  B60Y2200/92 ,  B60Y2400/604 ,  H02P2207/05

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.

公开(公告)号：US12072187B2

公开(公告)日：2024-08-27

申请号：US17799814

申请日：2021-02-10

Applicant: HITACHI ASTEMO, LTD.

Inventor： Makoto Kimura

IPC: G01B7/30 ,  B62D5/04

CPC classification number: G01B7/30 ,  B62D5/0481

Abstract: The present invention provides a rotation angle detection device that detects a steering state quantity of steer-by-wire. The rotation angle detection device includes a drive gear that rotates along with the rotation of a rotating shaft part, first through third driven gears that rotate in conjunction with the drive gear and have different numbers of teeth that are indivisible by each other, sensors that detect the amounts of rotation and are provided for the respective first through third driving gears, a rotation amount generating unit that generates the amount of rotation of the drive gear by combining the amounts of rotation of different driven gears, and power supply circuits each of which is provided for a combination of sensors that detect the amounts of rotation of different driven gears. This configuration makes it possible to improve robustness against failure of sensor elements and power supply circuits.

公开(公告)号：US20240282196A1

公开(公告)日：2024-08-22

申请号：US18563751

申请日：2022-02-02

Applicant: Hitachi Astemo, Ltd.

Inventor： Keiichiro NAGATSUKA

IPC: G08G1/16 ,  B60W30/08 ,  B60W50/14

CPC classification number: G08G1/16 ,  B60W30/08 ,  B60W50/14 ,  B60W2420/403 ,  B60W2520/10 ,  B60W2552/53 ,  B60W2554/802 ,  B60W2555/60

Abstract: Provided is a vehicle drive control device capable of appropriately determining a signal state of a traffic signal and, in a case where there is a collision possibility with another object, suitably determining a warning to an own vehicle driver and/or vehicle control of the own vehicle in consideration of a signal information determination result. A vehicle drive control device 100 includes a signal state determination unit 104 that acquires, a plurality of times over a predetermined time, signal recognition information recognized by a signal information recognition unit 101 and determines a state of a signal based on the acquired signal recognition information, and a collision determination unit 107 that determines a possibility of collision between an own vehicle 10 and an other vehicle 20 based on information on the other vehicle 20 around the own vehicle recognized by an other vehicle recognition unit 102. When determining that there is a possibility of collision between the own vehicle 10 and the other vehicle 20, the collision determination unit 107 performs a warning to the driver of the own vehicle 10 and/or vehicle control of the own vehicle 10 based on a signal state determination result of the signal state determination unit 104.

公开(公告)号：US20240282123A1

公开(公告)日：2024-08-22

申请号：US18566585

申请日：2022-02-04

Applicant: Hitachi Astemo, Ltd.

Inventor： Hitoshi HAYAKAWA ,  Kento KAGIMOTO

IPC: G06V20/56 ,  B60W30/16 ,  B60W30/18 ,  G06T7/70 ,  G06V20/58

CPC classification number: G06V20/588 ,  B60W30/16 ,  B60W30/18163 ,  G06T7/70 ,  G06V20/58 ,  B60W2420/403 ,  B60W2552/53 ,  B60W2554/80 ,  G06T2207/30252 ,  G06V2201/07

Abstract: An object is to provide a rearward white line inference device, a target recognition device, and a method capable of inferring a rearward white line with high accuracy. A rearward white line inference device includes: a white line detection unit that detects a white line ahead of a host vehicle; an azimuth-relative-to-white-line generation unit that obtains an azimuth of the host vehicle relative to the white line every predetermined time interval based on a detection result of the white line detection unit; and a relative azimuth inference unit that infers a relative azimuth from the azimuth of the host vehicle at a certain point based on the azimuth of the host vehicle obtained by the azimuth-relative-to-white-line generation unit.

公开(公告)号：US20240278824A1

公开(公告)日：2024-08-22

申请号：US18569552

申请日：2022-06-01

Applicant: HITACHI ASTEMO, LTD.

Inventor： Huajun LIU ,  Yasuhito NAKAKUKI

IPC: B62D5/04 ,  B62D5/00 ,  B62D6/00

CPC classification number: B62D5/0463 ,  B62D5/006 ,  B62D6/008

Abstract: In one mode of a steer-by-wire system, a steer-by-wire control apparatus, and a steer-by-wire control method according to the present invention, when a vehicle is undergoing skid, a reaction force generation apparatus decreases or increases reaction force torque from basic reaction force torque calculated from a steering angle of a steering wheel, based on the steering angle, a vehicle speed of the vehicle, and motor torque of a turning motor, and outputs the calculated reaction force torque as skid reaction force torque. In this way, the driver can be appropriately notified of a vehicle skid state via the steering wheel.

公开(公告)号：US20240278772A1

公开(公告)日：2024-08-22

申请号：US18569391

申请日：2022-05-18

Applicant: Hitachi Astemo, Ltd.

Inventor： Masaru YAMASAKI ,  Kenta MAEDA ,  Shuji OHSHITA ,  Kentarou UENO

IPC: B60W30/045 ,  B60W30/12

CPC classification number: B60W30/045 ,  B60W30/12

Abstract: A vehicle motion control device includes: an actuator characteristic change estimation unit configured to estimate a characteristic change of an actuator at a future time from a current time; a controllable range estimation unit configured to calculate a controllable range of a vehicle motion from a characteristic change calculated by the actuator characteristic change estimation unit, a target track of a vehicle, and a current vehicle state; a vehicle motion planning unit configured to create a motion plan within a controllable range calculated by the controllable range estimation unit; an evaluation value calculation unit configured to calculate an evaluation value based on a motion plan created by the vehicle motion planning unit; and a determination unit configured to determine whether or not an evaluation value calculated by the evaluation value calculation unit is minimum.

公开(公告)号：US12066075B2

公开(公告)日：2024-08-20

申请号：US17417463

申请日：2019-12-20

Applicant: HITACHI ASTEMO, LTD.

Inventor： Fumiyuki Yamaoka ,  Joji Endo

IPC: F16F9/18 ,  B60G13/08 ,  B60G17/08 ,  F16F9/34 ,  F16F9/348 ,  F16F9/516

CPC classification number: F16F9/18 ,  F16F9/34 ,  F16F9/348 ,  F16F9/516 ,  B60G13/08 ,  B60G17/08 ,  B60G2202/24 ,  B60G2204/62 ,  B60G2206/41 ,  B60G2500/104 ,  B60G2500/114 ,  B60G2600/182 ,  B60G2600/21 ,  B60G2800/162 ,  B60G2800/916 ,  F16F2222/12 ,  F16F2228/066 ,  F16F2230/183 ,  F16F2232/08 ,  F16F2234/02

Abstract: A shock absorber includes: a cylinder; a piston slidably inserted into the cylinder; a piston rod connected to the piston and extending outside the cylinder; a main valve that generates a damping force; a pilot chamber that applies pressure to the main valve; an introduction passage that introduces the fluid into the pilot chamber; a pilot passage that communicates the pilot chamber and a downstream side of the main valve with each other; and a control valve provided in the pilot passage. In an upstream side of the pilot passage from the control valve, the pilot passage is provided with a first orifice, a first passage provided in parallel with the first orifice, a first check valve that is opened at a predetermined differential pressure and allows a flow toward the control valve through the first passage, and a second orifice.

公开(公告)号：US12066067B2

公开(公告)日：2024-08-20

申请号：US17414394

申请日：2019-12-02

Applicant: Hitachi Astemo, Ltd.

Inventor： Takahito Osada ,  Shigeru Hayashi ,  Yorihito Miura ,  Yusuke Shigeta ,  Masahiko Kamesawa

IPC: F16D65/097 ,  F16D55/227 ,  F16D55/00

CPC classification number: F16D55/227 ,  F16D65/0977 ,  F16D2055/0041 ,  F16D2250/0046

Abstract: Protruding portions protruding in a direction of approaching a disc rotor are integrally formed in a locking plate portion of a pad spring. Moreover, an insulating resin coating is formed on a front surface side (surface in a region opposed to an outer peripheral surface of the disc rotor) of the locking plate portion. The coating film formed on the front surface of the locking plate portion flows downward by its own weight before the coating material is solidified. As a result, the coating film formed on bottom surfaces (front surfaces of protrusions) of the protruding portions is thinner in film thickness than that of the coating film in other region.

公开(公告)号：US20240274009A1

公开(公告)日：2024-08-15

申请号：US18564813

申请日：2022-03-09

Applicant: Hitachi Astemo, Ltd.

Inventor： Yuki HORITA ,  Satoru OKUBO

IPC: G08G1/16 ,  B60W50/023

CPC classification number: G08G1/16 ,  B60W50/023

Abstract: An electronic control device incorporated in a vehicle includes: a sensor detection information acquiring unit that acquires detection information from a first external environment sensor and detection information from a second external environment sensor, the first external environment sensor and second external environment sensor being incorporated in the vehicle; a sensor detection information integrating unit that specifies a correspondence relationship between an environmental element indicated in detection information from the first external environment sensor and an environmental element indicated in detection information from the second external environment sensor; and a sensor detectable area determining unit that determines a relationship between a relative position and a detection capability at the first external environment sensor, based on a state of detection by the first external environment sensor of an environmental element detected by the second external environment sensor, the state of detection being indicated in the integrated detection information, and that based on the relationship, determines a detectable area for the first external environment sensor.