Hitachi Astemo Ltd.

Akitoshi Miyazaki

Masashi Seimiya

Satoshi Matsuda

Tomoyasu Sakaguchi

Yoshitaka Fukasawa

An object of the present invention is to improve convenience of parking assistance. A control deviceof a driving assistance devicecontrols an emergency brake device that actuates an emergency brake based on a distance to an obstacle detected by a sonarconstituting the detection device mounted on a vehicleand a parking assistance device that provides parking assistance for the vehicle. In the sonarconstituting the detection device, an upper limit value and a lower limit value that define a range of the distance in which an obstacle can be detected are determined in advance. The control deviceinvalidates the operation of the emergency brake device when the distance between the vehicleand the obstacle at a target vehicle stop position which is a target position for stopping the vehiclein the parking assistance is smaller than the lower limit value.

Control device for driving assistance device

A parking assist device capable of parking assistance that ensures high accuracy of a parking location is provided. A parking assist device that assists in performing an operation of parking a vehicle includes a parking-allowing location calculation unit that before the vehicle stops at a parking-allowing location, calculates and updates the parking-allowing location a plurality of times, and a parking route calculation unit that calculates a parking route. The parking route calculation unit sets a minimum turning radius for calculating the parking route, based on the amount of a shift between the parking-allowing location not updated and the parking-allowing location having been updated, and calculates the parking route, using the minimum turning radius. The minimum turning radius is set larger than the minimum value of a turning radius unique to the vehicle.

Parking assist device

The vehicle stop position accuracy is improved. A parking assist device, which assists parking of a vehicle at a target stop position, includes: a traveling distance calculation unit that calculates a traveling distance of the vehicle based on a wheel speed pulse; and a braking/driving force calculation unit that determines a remaining distance to the target stop position based on the traveling distance, and switches control of the braking force of the vehicle from feedback control to feedforward control when the remaining distance becomes a value equal to or less than a predetermined value.

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Hitachinaka, Japan

Akitoshi Miyazaki