Audi Ag

Christoph Göhrle

Andreas Unger

Oliver Sawodny

Andreas Schindler

Andrease Schindler

The invention relates to a method for controlling at least one actuator () for a chassis of a motor vehicle, in which at least one sensor () of the motor vehicle determines values of at least one measurement variable for sensing an environment of the motor vehicle, wherein the determined values are preprocessed, wherein only the values needed to control the at least one actuator () are transmitted from a control device () associated with the sensor to a control device () associated with the actuator and are temporally filtered by the control device () associated with the actuator, and wherein the control device () associated with the actuator uses the temporally filtered values to provide actuating signals for the at least one actuator ().

Method for controlling an actuator

The invention relates to a method for compensating for vertically oriented movements of a superstructure of a vehicle. The vehicle is provided with the superstructure and with an active undercarriage having a plurality of wheels which are in contact with the carriageway, wherein each wheel is connected via an actuator adjustable over its length at a wheel assigned to a suspension point with the superstructure. Vertically oriented movements of the superstructure are caused by an inclination of the carriageway and by unevennesses of the carriageway, a first change of the length of at least one actuator is carried out for frequencies in a first, lower frequency range, and a second change of the length of the at least one actuator is carried out for frequencies in a second, higher frequency range.

Method for compensating for vertical movements

A method for compensating for an inclination of a vehicle in at least one spatial direction. The vehicle has a vehicle body and an active chassis with a plurality of wheels, which are in contact with the roadway. Each wheel is joined to the vehicle body by way of an actuator, which can be adjusted in terms of its length, at a suspension point associated with the wheel. An inclination of the vehicle body in the at least one spatial direction is determined. For at least two wheels, respectively, a vertical distance to the suspension point of the vehicle body that is associated with the particular wheel is detected. Via the at least two determined distances, an inclination of the chassis in the at least one spatial direction is calculated by transformation of the vertical distance of the at least two wheels to the vehicle body.

Method for compensating for an inclination

The invention relates to a method for providing a manipulated variable for an actuator () of an active chassis of a motor vehicle (), wherein the manipulated variable in the event that a value for a projected variable, which is dependent upon a height profile of the terrain to be travelled by the motor vehicle (), is available, is configured from a combination of a Skyhook variable, which is dependent upon a movement of a structure of the motor vehicle (), and the projected variable, and wherein the manipulated variable is configured from a combination of a soft-spring variable, which is dependent upon a wheel-suspension of the motor vehicle (), and the Skyhook variable, if no value for the projected variable is available.

Method for providing a manipulated variable

A method for controlling at least one actuator of a chassis of a motor vehicle, which travels over a subsurface is disclosed, wherein a height profile of the subsurface is detected, wherein it is analyzed for a section of the subsurface whether the height profile along said section has a value which deviates from a threshold value by a specified tolerance value, and wherein a regulating variable for activating the actuator is adjusted in consideration of the identified unevenness when the motor vehicle travels over the identified unevenness.

In a method of operating an active suspension of a motor vehicle, power is added to at least one active control element of the active suspension, arranged between a wheel and a body, for damping a movement of the motor vehicle in a vertical direction when negotiating a terrain to thereby influence at least one control variable of the suspension, which control variable is oriented in the vertical direction. A first signal of a velocity of the body in the vertical direction and a second signal of the at least one control variable are determined. After ascertaining a phase shift between the first and second signals, a value of the phase shift is compared with a predefined threshold value. The presence of excitation is identified for the vertical body movement, when the value of the phase shift deviates from the threshold value at least by a tolerance value.

Method of operating an active suspension

In a method for controlling at least one component of a chassis of a vehicle, a parameterization of a reactive controller of the at least one component of the chassis is changed depending on a current certainty of sensor data of a roadway section to be driven detected by a sensor system, such that, when driving on the roadway section, in the case of increased uncertainty of the sensor data, the reactive controller controls with a lower reaction time with respect to a normal operation.

Method for proactive controlling of chassis components

In a method for operating an at least semi-active chassis of a vehicle, a height profile of a road course which lies ahead in driving direction of the vehicle is determined with at least one sensor unit and at least one actuating unit of the vehicle is proactively controlled with the control unit, wherein an actual obstacle of the road course, which is displayed in the determined height profile is assigned to one of multiple predefined and store categories and a predetermined control signal is transmitted to the at least actuating unit based on the assigned category, wherein the actuating unit executes the control signal.

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Ingolstadt, Germany

Christoph Göhrle