Volkswagen Ag

Robert Boschgmbh

Peter Andreas

Ralph Mende

Ralf Bergholz

Thomas Ruchatz

Heiko Rabba

Thomas Bizenberger

Wolfgang B&auml;ker

Arnold Ensslen

Wolfgang Baeker

Rudolf Mai

André Zander

Wolfgang Baker

Thomas Ruchartz

Arnold Dipl-Ing Ensslen

The present invention relates to a method for controlling the speed of a motor vehicle and the distance of the motor vehicle to least one motor vehicle driving ahead, where at least the speed v of the motor vehicle and the distance a to the motor vehicle driving ahead are determined with the aid of a detector having a distance sensor, where the traveling speed v is adjusted in response to the measured distance a deviating from a setpoint trailing distance a , and where the engineering problem of controlling the speed and the distance of a motor vehicle to least one preceding motor vehicle is solved in both a simple and reliable manner, in that an intervention distance a &prime; is determined which is less than the range of the distance sensor, and that the traveling speed v is adjusted at a distance a which is less than the intervention distance ai.

Method for controlling the speed and distance of a motor vehicle

A method is for regulating the speed of an automobile and the distance of the automobile from at least one automobile driving in front during a docking process, the driving speed of the automobile being greater than that of the automobile in front. According to the method, a detection device with a distance sensor is used to determine at least the speed of the automobile, the relative speed and the distance from the automobile in front, and the value of a normal acceleration for a braking operation of the vehicle is calculated according to the difference between a predetermined normal desired following distance and the distance and the relative speed. The technical problem of further improving the functioning of a method of this type and the corresponding device and ensuring comfortable driving behavior during the docking process between the two automobiles is solved by calculating the value for a limit acceleration for a braking operation of the automobile according to the difference between a predetermined limit desired following distance and the distance and the relative speed, by determining the greater of the two values for the normal acceleration and the limit acceleration in terms of amount, as the braking acceleration to be applied, and braking the automobile with the braking acceleration. A device for performing the method includes two proportionality regulators for calculating the normal acceleration and the limit acceleration.

Method and device for regulating a docking process between two automobiles

A method for controlling the speed of a motor vehicle and the distance of a motor vehicle to at least one motor vehicle driving ahead includes the steps of: inputting a setpoint trailing distance to the motor vehicle driving ahead; determining, in accordance with at least one detector, at least the speed of the motor vehicle, the distance, and the speed relative to the motor vehicle driving ahead; decelerating or accelerating the motor vehicle in response to the detected distance deviating from the setpoint trailing distance; calculating, in response to the motor vehicle driving ahead being lost from the detection range of the detector (target loss), the speed of the motor vehicle driving ahead from the relative speed determined prior to losing the target; and calculating the actual distance from the driving speed of the motor vehicle. Thus, the speed of the motor vehicle driving ahead is derived from the measured values measured prior to the time of losing the target, and, in accordance with a differential time unit, the distance is extrapolated from the driven speed of the motor vehicle and the speed of the motor vehicle driving ahead.

A curve radius of a roadway is determined by measuring the difference in wheel speed of at least two vehicle wheels and the rate of yaw of the vehicle, and hence the curve radius, is determined therefrom. The wheel speeds are determined by measuring the time required for the wheel to rotate by a fixed rotational angle, based on a fixed number of pulses produced by a pulse transmitter which is part of an ABS or ASR system for the vehicle. The method provides considerably improved accuracy using simple, vehicle-contained components and various parameters can be taken into account simultaneously.

Method of determining a roadway curve radius

A method and device for regulating speed and/or distance of a first vehicle to at least one other vehicle driving ahead of the first vehicle in connection with a passing maneuver. The method or device provides a detection system associated with the first vehicle which continuously detects the vehicle directly in front and the position of the turn signal lights, as well as the yaw rate and/or steering position of the first vehicle. The method or device of the present invention further provides an evaluation unit which continuously ascertains setpoint value data for regulating the speed of the first vehicle and its distance to the at least one other vehicle directly in front from this data.

Method for regulating speed and distance during passing maneuvers

A motor vehicle object-detecting arrangement includes a distance controller having a distance-sensing device for emitting and receiving object-reflected measuring beams in different directions and having an evaluation unit. The measuring beams received by the distance-sensing device are appraised as a function of the geometry of the road on which the vehicle is being driven. For this purpose an appraisal device receives information from the distance sensing device and from a transmitter unit which supplies information on the road geometry of the road. The appraisal device appraises the measuring beams reflected from different directions as a function of the information on the road geometry.

Arrangement and method for detecting objects from a motor vehicle

In the method for automatically controlling the spacing of motor vehicles described in the specification, a lane width for a controlled vehicle which is defined for evaluation is varied as a function of transverse velocities of vehicles detected ahead of the controlled vehicle.

Method for automatically controlling motor vehicle spacing

In the motor vehicle speed control arrangement, the distance to an object detected in front of the motor vehicle is detected by a distance sensor and supplied to a control unit which forms one or more manipulated variables for setting the driving speed of the motor vehicle as a function of at least a desired distance to the detected object which is determined at least from the instantaneous driving speed and/or a prescribed desired speed. In order to improve the comfort performance of the speed control, the arrangement provides that, in the event of a loss of detection of the object by the distance sensor, the control unit determines the reason for the loss of detection of the object and forms the manipulated variables for setting the driving speed as a function of the reason for the loss of detection.

Growing community of inventors

Gifhorn, Germany

Peter Andreas