Hitachi Astemo Ltd.

Hitachi, Ltd.

Go Sakayori

Junya Takahashi

Tomoaki Fujibayashi

Hiroshi Nakano

Kenta Maeda

Hiroki Sonoda

Hideki Endo

Masato Imai

Tsutomu Kaneko

Noriyasu Hasejima

Naoyuki Tashiro

Shinya Kasai

Yoshiji Hasegawa

The present disclosure provides a vehicle coordinating device capable of improving the accuracy of following a target path of a vehicle. A vehicle coordinating devicethat coordinates automatic driving of a vehicleby a vehicle control devicemounted on the vehicleincludes a communication unit, a vehicle characteristic identification unit, and an identification accuracy estimation unit. The communication unitis communicably connected to the vehicle control device. The vehicle characteristic identification unitacquires a control command value of the automatic driving and a traveling locus of the vehiclefrom the vehicle control devicevia the communication unit, and identifies the vehicle characteristic used for the automatic driving. The identification accuracy estimation unitestimates the identification accuracy of the vehicle characteristic by the vehicle characteristic identification unit. The automatic driving coordinating unitcoordinates the automatic driving of the vehiclebased on the identification accuracy estimated by the identification accuracy estimation unit

Vehicle supervision device

An object of the present invention is to provide a steering control device and a steering control method that can reduce a driving burden imposed on a driver during low velocity driving. The present invention is provided with an arithmetic logic unit that changes a steering angle of a wheelby driving a wheel steering actuatorbased on a manipulated variable of a steering, and calculates a controlled variable of the wheel steering actuator. In turning the steering, the arithmetic logic unit controls the wheel steering actuatorbased on a first gain at which a ratio of an actual steering angle of the wheelchanges with respect to a steering angle δ, and in returning the steering, the arithmetic logic unit controls the wheel steering actuatorbased on a second gain that differs from the first gain.

Steering control device and steering control method

The present disclosure provides a steering control device capable of transmitting an appropriate reaction force by a driver via a steering wheel and improving the stability of a vehicle. Provided is a steering control devicefor controlling a reaction force actuatorthat generates a reaction force against an operation of a driver in a steering wheelof a vehicle. The steering control deviceincreases the reaction force in a nonlinear region where a cornering force characteristic that is the relationship between the slip angle and the lateral force of tiresof the vehiclebecomes nonlinear, more than the reaction force in a linear region where the cornering force characteristic becomes linear.

Steering control device

The purpose of the present invention is to provide a vehicle control system that can achieve highly comfortable autonomous driving according to the behavior of an occupant by changing a control mode of the autonomous driving according to the behavior of the occupant. To this end, a vehicle control system, which automatically drives a vehicle, comprises: an occupant information detection unit that detects, on the basis of in-vehicle information, position information and behavior information on the occupant; a tolerance calculation unit that calculates a vehicle motion tolerance on the basis of the position information and the behavior information detected by the occupant information detection unit; a trajectory generation unit that generates, on the basis of the vehicle motion tolerance calculated by the tolerance calculation unit, trajectory information including a traveling-scheduled route and time; and an autonomous driving control unit that generates, according to the trajectory information generated by the trajectory generation unit, a control command value to be sent to an actuator of the vehicle.

Vehicle control system

Provided is a mobile body control system capable of improving both the comfort of passengers in each mobile body and the efficiency of cargo transport when a plurality of mobile bodies travel in a formation. A mobile body control system () causes a plurality of mobile bodies () to travel in a formation along a preset travel route, and comprises a preceding/succeeding acceleration calculation unit (S) that calculates a preceding/succeeding acceleration of a preceding mobile body (_) and a succeeding mobile body (_+1) on the travel route. The preceding/succeeding acceleration calculation unit adjusts a gain E of an arithmetic expression used to calculate the preceding/succeeding acceleration on the basis of information about a transported object being transported by each mobile body ().

Mobile object platoon control system that calculates longitudinal acceleration of the mobile objects by setting a gain of an arithmetic expression

A steering control device for reducing a steering load on the driver by adjusting a gain of a rear wheel steering angle with respect to a front wheel steering angle operated by the driver according to a relative relationship between the vehicle and the parking frame to enable fine steering of the own vehicle near the parking frame when the four-wheel steering vehicle is parked. The steering control device is configured to control a rear wheel steering angle by a rear wheel steering system based on a front wheel steering angle operated by a driver, and includes an arithmetic device configured to reduce an absolute value of a gain of the rear wheel steering angle with respect to the front wheel steering angle as a positional relationship between an own vehicle and a parking frame comes closer when an own vehicle shifts to a parking driving mode.

Provided is a steering control device and a steering control method that can suppress the deterioration of the turning responsiveness at the initial stage of steering that may occur in a four-wheel steering vehicle and improve the steering stability when the front and rear wheels of the four-wheel steering vehicle are controlled in the same phase. A steering control deviceof a vehicle that controls a rear wheel steering angle based on a front wheel steering angle includes a control unitthat controls an amount obtained by dividing an integrated value of a change in the rear wheel steering angle in a second steering section where an absolute value of the front wheel steering angle is constant and/or decreases by a time to be larger than an amount obtained by dividing an integrated value of a change in the rear wheel steering angle in a first steering section where the absolute value of the front wheel steering angle increases by a time.

A host lane environment recognition unit acquires an operation of a target vehicle traveling in a host lane and a road environment. An adjacent lane environment recognition unit acquires operation of vehicles traveling in an adjacent lane and a road environment. A lane changeable space determination unit determines whether the host vehicle can change lanes using road environment information of the adjacent lane. A lane change control unit determines whether the target vehicle traveling in the host lane is allowed to change lanes, based on the operation of the target vehicle and the adjacent vehicle traveling in their lanes. The lane change control unit causes the host vehicle to change lanes based on determining whether the host vehicle can change lanes in the adjacent lane by the lane changeable space determination unit and whether or not the target vehicle is allowed to change lanes.

Growing community of inventors

Tokyo, Japan

Go Sakayori