Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Other

Hitachi Car Engineering Co., Ltd.

Toshiyuki Innami

Kimio Nishino

Keiichi Mashino

Shinichi Fujino

Yuzo Kadomukai

Kenichiro Matsubara

Norikazu Matsuzaki

Masayuki Kikawa

Junya Takahashi

Akira Mishima

Shinji Shirakawa

Ryoso Masaki

Kazuo Tahara

Hisaya Shimizu

Toshiharu Sugawara

Kou Ajima

Toshimichi Minowa

Noriaki Hino

Tatsuyuki Yamamoto

Ayumu Miyajima

Yuki Akiyama

Koichi Yokoura

Tetsuya Yamada

Makoto Yamakado

Kim Houng Joong

Taizo Miyazaki

Yoshinori Fukasaku

Keiichiro Nagatsuka

Tomoyuki Hanyu

Susumu Tajima

Hideshi Fukumoto

Yuuji Maeda

Hiromichi Anan

Koki Ueta

Kousaku Ohno

Keisuke Nishidate

Hideki Miyazaki

Osamu Suzuki

Takashi Ishigami

Osamu Koizumi

Toshiyuki Ajima

Takehiko Kowatari

Junichi Sakano

Masashi Kitamura

Hiroshi Kanazawa

Kentaro Ueno

Mitsuhide Sasaki

Shingo Nasu

Masamichi Yagai

Mitsuaki Mirumachi

Yoshitaka Ochiai

Seiichi Satoh

Keita Hashimoto

Kohsei Goto

Naoki Hiraga

Takashi Kobayashi

Satoru Kaneko

Motoyuki Abe

Satoshi Shimada

Atsushi Yokoyama

Daisuke Goto

Satoru Kuragaki

Tohru Ishikawa

Noriyuki Maekawa

Tsunehiro Endo

Takafumi Suzuki

Masatsugu Arai

Takashi Okamoto

Kenji Takahashi

Tsutomu Kaneko

Kenichi Yoshida

Haruki Matono

Toshihiko Horiuchi

Hideaki Mori

Houng Joong Kim

Takao Konno

Kenta Maeda

Yuichi Kuramochi

Hitoshi Kobayashi

Mikio Ueyama

Takayuki Ohno

Takuya Obata

Yoshimi Sakurai

Kazuhiko Hanawa

Masami Takano

Masanori Tsuchiya

Shouji Muramatsu

Yasufumi Konishi

Shogo Nakao

Tatsuji Ohkubo

Kenchiro Tokuo

Kousaku Oono

Keisuke Mishidate

Kenichirou Matsubara

Kentaro Yoshimura

Mamoru Ohba

A power conversion device includes: a DC/DC converter; and a control circuit unit that controls the DC/DC converter, in which the DC/DC converter includes a first power output circuit that converts first direct current power into first alternating current power, an isolation transformer that converts the first alternating current power into second alternating current power, and one or a plurality of second power output circuits, each of which converts the second alternating current power into second direct current power, and the control circuit unit includes a resonance characteristic calculator that calculates a resonance characteristic of the second power output circuits based on a load for each of the second power output circuits to output the second direct current power, and determines a drive frequency of the first power output circuit based on an output request value of the second power output circuit and the resonance characteristic that is calculated.

Power conversion device

Fail-safe is performed appropriately when an automatic driving ECU has a failure. Provided is an in-vehicle electronic control system including a recognition device that recognizes a situation outside a vehicle, a track calculation unit that calculates a track on which the vehicle travels, a failure diagnosis unit that diagnoses a failure of the track calculation unit, and an output unit that outputs a control signal used to control the vehicle, in which a control signal generated based on a brake control instruction generated by the recognition device and a control signal generated based on a track control instruction generated by the track calculation unit are input to the output unit, and when the failure diagnosis unit diagnoses that the track calculation unit has a failure, the output unit outputs a control signal generated based on the brake control instruction generated by the recognition device.

In-vehicle electronic control system

A vehicle control device causes an automatic brake to function even for an obstacle suddenly appearing from outside a sensor detection range in a place estimated to be dangerous such as an intersection. A vehicle control device calculates time-to-collision TTC based on a detection result of an obstacle sensor, and controls a brake, which is an actuator of a vehicle, based on the calculated time-to-collision TTC. The vehicle control device includes a determination unit that determines right turn or left turn of the vehicle, and a command unit that sends a command according to a determination result of the determination unit to the brake. When determining that the vehicle is turning right or left, the determination unit changes the time-to-collision TTC to a longer value by extending more than that at the time of traveling straight.

Vehicle control device

An on-vehicle control device includes: a control unit that controls an attitude of a vehicle based on a value of a behavior sensor that detects a behavior of the vehicle, and prohibits control based on the behavior sensor when the value of the behavior sensor exceeds a threshold; and a travel environment determination unit that determines a travel environment of the vehicle based on image information captured by a camera, and in which the control unit changes the threshold to a lower value based on the travel environment determined by the travel environment determination unit.

On-vehicle control device

Provided are: a device and a method for controlling vehicle movement, with which it is possible to suppress causing uncomfortableness to vehicle occupants and causing unstable behavior during turning by automatic travel control; and a device and a method for generating a target course. In a vehicle capable of automatically controlling lateral acceleration occurring in the vehicle, the present invention controls the acceleration occurring in the vehicle such that jerk, which is the change over time of acceleration, becomes the greatest in a region where the lateral acceleration that occurs upon entering a curve is equal to or less than half the acceleration during normal turning, and the jerk decreases as the acceleration increases.

Device and method for controlling vehicle movement, and device and method for generating target course

The present invention provides a vehicle control device that can reduce the delay in the deceleration response of a vehicle to a deceleration command. The present invention modifies the distribution ratio of brake fluid pressure between front brakes and rear brakes on the basis of lateral motion information, vehicle information, and a collision risk or a traveling scene obtained from information pertaining to the external surroundings. The brake fluid pressure is distributed to only one of the front brakes or the rear brakes.

The present invention provides a vehicle movement control device which is capable of achieving stable vehicle behavior during the movement of a vehicle in lane changing mode. When calculating a travel path for turning a vehicle to the left side or the right side and then turning the vehicle to the other side, this vehicle movement control device calculates the travel path so that the peak value of the curvature of the travel path decreases in a section where the vehicle speed is higher.

Vehicle movement control device

A video output system provided with a camera and an interface device, wherein the interface device is provided with a condition storage unit which specifies conditions under which a video is to be selected by the camera, and a video output unit which outputs a captured video received from the camera, and wherein the camera is provided with: an image sensor; a video generation unit which generates captured videos on the basis of the output of the image sensor; a condition acquisition unit which acquires said conditions from the interface device; a recognition/comparison unit which determines whether or not each captured video generated by the video generation unit meets the acquired conditions, and if it is determined that a captured video meets the conditions, generates identification information on the basis of recognition results of a subject to be recognized that is included in the captured image determined to meet the conditions, and that is associated with the conditions; and a camera calculation unit which outputs, to the interface device, at least each captured video determined by the recognition/comparison unit as meeting the conditions, from among the captured videos generated by the video generation unit, and the identification information associated with that captured video.

Video output system

The present invention provides a vehicle control device and method capable of ensuring steering accuracy. In a vehicle provided with a left-right pair of steered wheels for which the braking/driving forces can each be controlled, and a steering force generation device that generates steering force for the steered wheels and controls the steering angle of the steered wheels, this vehicle control device and method control the steering force and the steering reaction force from the steering force generation device by controlling the braking/driving force of each of the steered wheels on the basis of the lateral force acting on the steered wheels.

Vehicle control device and method

A cruise control apparatus according to the present invention comprises a curve shape detection unit that detects the shape of a curve, an estimation trajectory calculation means that, on the basis of vehicle speed, calculates an estimated trajectory that satisfies a relationship in which a G-G diagram, which is a relationship between lateral acceleration and longitudinal acceleration, draws an arc, and a steering start point determination unit that determines a steering start point in front of a curve so that the estimated trajectory falls within the curve.

Cruise control apparatus and cruise control system

Provided is a travel control device for a vehicle such that comfortable and safe control for the vehicle is possible without disturbing the driver. The travel control device for the vehicle is provided with a control command computation unit for calculating a steering assist amount for assisting the steering of the vehicle and an acceleration command value for controlling braking and driving forces of the vehicle. The control command computation unit calculates an estimated lateral position of the vehicle at a gaze distance ahead of the vehicle; calculates a lateral displacement amount of the vehicle at the estimated lateral position from a target traveling path and a lateral displacement speed; calculates a steering assist amount on the basis of the lateral displacement amount and the lateral displacement speed; calculates a lateral acceleration and lateral jerk generated by the vehicle according to the steering assist amount; and calculates an acceleration command value based on the lateral acceleration and the lateral jerk.

Travel control device for vehicle

The purpose of the present invention is to provide a device and method for controlling vehicle motion and a vehicle equipped with the device, such that driving force and/or braking force is properly distributed between front wheels and rear wheels so that steering characteristics are made suitable and controllability and stability improve. This device comprises a means for controlling braking and/or driving force distribution between the front wheels and rear wheels of a vehicle such that when the absolute value of lateral acceleration of the vehicle increases, the distribution to the front wheels is made smaller, and when the absolute value of lateral acceleration of the vehicle decreases, the distribution to the front wheels is made larger.

Method and device for controlling vehicle motion and vehicle equipped with same

A second ECU determines whether or not there is an abnormality in a hydraulic-pressure sensor in a first cycle based on a detection value of the hydraulic-pressure sensor, and outputs a signal indicating a determination of an occurrence of the abnormality to a first ECU via a signal line when determining the occurrence of the abnormality in the hydraulic-pressure sensor. The first ECU receives the detection value of the hydraulic-pressure sensor through communication from the second ECU via the signal line to determine whether or not there is the abnormality in the hydraulic-pressure sensor in a second cycle that is shorter than the first cycle. When determining that the hydraulic-pressure sensor is abnormal, the first ECU controls driving of an electric actuator based on a braking command from an operation-amount detection sensor without using the detection value of the hydraulic-pressure sensor determined to be abnormal.

Vehicle control apparatus and brake control apparatus

The present invention improves emergency evasion performance. An operation control system for a vehicle that is provided with a risk-potential determining unit that determines the risk potential of a vehicle on the basis of external environment information and/or vehicle information, a friction braking unit that applies friction braking force to the vehicle, and a regenerative braking device that applies regenerative braking force to the vehicle, the operation control system being provided with a control value determining unit that determines a first control value that is for determining the size of the friction braking force and determines a second control value that is for determining the size of the regenerative braking force. The control value determining unit determines at least the first control value on the basis of the risk potential determined by the risk-potential determining unit.

Operation control system for vehicle, vehicle, and program

According to the present invention, limited electric power is consumed so as to achieve long-lasting use of electric power during brake control with the use of an auxiliary power supply source when there is a malfunction of a vehicle power supply source. In addition, a brake control device for ensuring responsiveness at the beginning of braking or when emergency braking is necessary is provided. The brake control device of the present invention is a brake control device for detecting electric signals generated depending on the degree of brake-pedal operation and calculating the driver's demanded braking force based on the electric signals so as to generate the demanded braking force, which comprises an auxiliary power supply source for supplying electric power to the brake control device when there is a malfunction of a vehicle power supply source and controls braking depending on the charged capacity of the auxiliary power supply source.

Brake control device

Growing community of inventors

Mito, Japan

Toshiyuki Innami