Daimler Chrysler Ag

Daimler Ag

Daimler-benz Ag

Friedrich Boettiger

Avshalom Suissa

Dieter Ammon

Zoltan Zomotor

Ralph Streiter

Hans Fritz

Matthias Benzinger

Rachad Mahmoud

An influencing device for influencing an active chassis that includes a plurality of controllable spring or damper units of a vehicle is provided. The influencing device includes a roadway sensor that produces sensor data relating to a roadway located in front of the vehicle in a direction of travel, the sensor data being used to acquire a roadway profile. The influencing device also includes a pilot control unit that determines, as a function of the acquired roadway profile, a pilot control variable that is used to adapt the setting of the spring or damper units to the acquired roadway profile. An input signal for a vehicle body control system, which is used to control the position of the vehicle body, is calculated on the basis of the pilot control variable.

Influencing device for influencing an active chassis system of a vehicle

To control the yaw behavior of a vehicle, a setpoint for the yaw rate of the vehicle is determined from the steering angle specified by the driver and a vehicle speed that has been determined. An actual value of the yaw rate is also determined. A controlling deviation is then determined from the difference between the actual value and the setpoint of the yaw rate, and is then supplied to controllers operating independently of one another. In one controller, the steering controller, the setpoint is determined for the wheel steering angle of the steered wheels, while in the other controller, the braking controller, a setpoint is determined for the change in the braking pressure of the brake wheels. Taking this value into account, a specified braking pressure is then determined. By means of the braking pressure control elements, the corresponding specified braking pressure is produced in the wheel brake cylinders and the corresponding wheel steering angle is supplied to the steered wheels by steering control members.

Process for controlling the yaw relationship of vehicles

For detecting and localizing sensor defects in motor vehicles, a sensor determines a measuring signal for the description of the dynamic behavior of the motor vehicle. A state value assigned to the measuring signal is computed from a mathematical equivalent model. An estimation error of the state value is determined and a residue is determined from the difference between the measuring signal and a reference quantity which corresponds to the measuring signal and is formed from the state value. For clearly detecting and localizing the sensor defects, a characteristic parameter is formed by multiplying the residue and the estimation error, and an error signal is generated if the characteristic parameter exceeds a limit value.

Method and system for detecting and localizing sensor defects in motor vehicles

A measuring and control system for a vehicle, having a measuring device for measuring the spacing between a following vehicle and a leading vehicle travelling ahead. The system involves a regulating and control unit for producing actuating signals as a function of measurement signals of the measuring device. In order to implement transverse guidance of a vehicle, the drawbar angle formed during cornering between the following vehicle and the leading vehicle is determined. The drawbar angle is formed between the longitudinal axis of the following vehicle and a connecting line between the following vehicle and the leading vehicle and is determined in the measuring device as an additional measurement signal. A steering signal is produced in the regulating and control unit as an actuating signal for the transverse guidance of the following vehicle as a function of the drawbar angle.

Measuring and control system for the tranverse regulation of successive vehicles and method for this purpose

A method for determining variables characterizing vehicle handling is provided, in particular the attitude angle. Signals of measured variables are fed to a computing device. At least the attitude angle is determined in the computing device using equations of motion and using a two-track model of the vehicle.

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Esslingen, Germany

Friedrich Boettiger