Volkswagen Ag

Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr

Heiko Rabba

Matthias Schultalbers

Thomas Ruchatz

Peter Andreas

Elmar Millich

Thomas Bizenberger

Wolfgang Baeker

Michael Homann

Jan Klöck

Thomas Orlik

Torsten Dr-Ing Jeinsch

Nick Werner Weinhold

Steven X Prof Dr-Ing Ding

Ping Dr-Ing Zhang

Peter Prof Dr-Ing Dünow

Dirk Heyden

A method for monitoring a power electronic assembly is improved to be more effective and versatile. It includes converting and/or modifying an electrical input into at least one electrical output by a conversion and/or modifying process which proceeds in connection with the power electronic assembly. During the conversion and/or modification a bit stream is generated by a delta-sigma modulator and represents the electrical value, that is to say the electrical input or the at least one electrical output. One bit stream each can also be generated by a plurality of delta-sigma modulators and represents the respective electrical value, that is to say the electrical input and the at least one electrical output. The power electronic assembly is monitored based on the one bit stream(s) thus generated and available as a result. The bit stream(s) is/are not demodulated, and therefore very meaningful information of the corresponding useful signal is provided.

Method and device for monitoring a power electronic assembly

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.

Growing community of inventors

Braunschweig, Germany

Heiko Rabba