Toyota Jidosha Kabushiki Kaisha

Other

Akira Hattori

Hironori Miyakoshi

Nobuyuki Furui

Kouichi Hara

Tatsuya Suzuki

Quy Hung Nguyen Van

Hirofumi Aoki

Minoru Saeki

Sueharu Nagiri

Akiharu Kanagawa

Manh Dung Vu

Shouji Itou

A driving support device for a vehicle includes: a calculation unit that calculates a sensitivity index value for avoiding a target that is at risk of collision, based on a driving operation content of a driver of the vehicle; a determination unit that determines a driving support method to be applied to the driver, based on the sensitivity index value calculated by the calculation unit; and an execution unit that executes the driving support method determined by the determination unit.

Driving support device, method, storage medium, and vehicle

A curve's radius of a road on which a vehicle shall run is estimated based on actual speed, yaw rate, and steering angle of the vehicle. Accordingly, during a transition state of the vehicle, the curve's radius can be estimated with the actual yaw rate taking into account the actual steering angle that can reflect more accurately turning behavior of the vehicle than the actual yaw rate. Therefore, errors in the estimation of the curve's radius due to response delay of the actual yaw rate can be easily reduced even though the yaw rate is used for such estimation.

Curve's radius estimation device

A running control apparatus and method control the state of running of a vehicle based on a relative positional relationship between the vehicle and a preceeding vehicle. In a case where a brake is actuated if the deceleration deviation obtained by subtracting an actual deceleration from a target deceleration is at least a third threshold &Dgr;&agr;s3, the brake is actuated provided that an object body detected by a laser radar device is a preceeding vehicle and that the same-lane probability that the preceeding vehicle is running in the same lane as the vehicle is at least a set probability. Thus, the brake is actuated when there is a high probability that braking is needed. Therefore, erroneous operation of the brake can be reduced.

Running control apparatus and method

A vehicle operation control apparatus for controlling a running state of a vehicle based on a relative positional relationship between the vehicle and a preceding vehicle running in a predetermined area ahead of the vehicle. The vehicle operation control apparatus comprises a controller that determines a target deceleration of the vehicle based on the relative positional relationship between the vehicle and the preceding vehicle. The controller controls a deceleration of the vehicle so that the deceleration of the vehicle approaches the target deceleration and maintains the target deceleration until a predetermined condition is satisfied.

Vehicle operation control method and apparatus that controls deceleration of a vehicle

In a vehicular braking control apparatus and method, the hydraulic pressure on a wheel cylinder is gradually reduced with a relatively gentle gradient of reduction (k ) at the time when a braking operation member, operated by an operating person of the vehicle, is detected to have been operated to a predetermined position. At the time when a state of the braking operation is detected to have reached a predetermined threshold, the hydraulic pressure on the wheel cylinder is reduced with a relatively great gradient of reduction (k ). Therefore, it is possible to reduce vibrations of a brake pedal or the change in deceleration while adopting a relatively simple construction.

Vehicular braking control apparatus and control method thereof

A brake control apparatus comprising a brake fluid pressure sensor for detecting the brake fluid pressure of the wheel cylinder for a braking system. That is, the brake fluid pressure sensor detects the condition of braking. The brake fluid pressure is controlled. The brake fluid pressure is increased based on a predetermined pressure increase gradient in the initial stage of the automatic braking, and is decreased based on a predetermined pressure decrease gradient in the latter stage of the automatic braking.

Growing community of inventors

Nagoya, Japan

Akira Hattori