Dr. Ing. H.c. F. Porsche Aktiengesellschaft

David Caredda

Jochen Liebold

Markus Eisenbarth

A method for controlling a chassis of a vehicle includes the steps of: detecting a vertical wheel acceleration of a wheel of the vehicle, detecting a vertical body acceleration of a body of the vehicle, determining a crest-dip indication by comparing the vertical wheel acceleration and the vertical body acceleration, and controlling the chassis on the basis of the crest-dip indication. The crest-dip indication indicates whether or not the vehicle is currently driving over a crest (K) or a dip (S). A system for controlling a chassis of a vehicle includes a wheel acceleration sensor for detecting a vertical wheel acceleration of a wheel of the vehicle, a body acceleration sensor for detecting a vertical body acceleration of a body of the vehicle, and a control unit.

Method and system for controlling a chassis of a vehicle

A method for compensating sensor tolerances of accelerometers of a vehicle. The method includes following steps: recording of measurement signals of at least three similarly oriented accelerometers, calculation of an acceleration (a) at a reference position in the spatial direction, which corresponds to the orientation of the accelerometers, low-pass filtering of the measurement signals, determination of tolerance parameters (c, c, c) of each sensor via an optimization method with the aid of the calculated acceleration (a) at the reference position, and calculation of the adjusted measurement signals from the recorded measurement signals and the tolerance parameters (c, c, c).

Method of compensating for sensor tolerances

Method for adjusting the damping force of shock absorbers connected between a vehicle body and a wheel at vehicle corners of a motor vehicle, wherein at least one damping force (F, F, F) which is referred to a center of gravity of the vehicle body and is divided between axles of the vehicle and between the shock absorbers of the axles is determined as a function of at least one variable which represents a movement of the vehicle body and/or a movement of the respective wheel. For at least one of the damping forces which are referred to the center of gravity of the vehicle body, at least one division factor for the division of the damping forces is calculated between a front axle and a rear axle, and the division of the respective damping force (F, F, F) is adapted on the basis of this division factor.

Method and control device for adjusting the damping force of a shock absorber

A method for adjusting the damping force of shock absorbers, connected between a vehicle body and a wheel at vehicle corners of a motor vehicle, wherein at least one damping force which is referred to a center of gravity of the vehicle body and which is divided between the shock absorbers of the respective wheels of the motor vehicle is determined as a function of at least one variable which represents the movement of the vehicle body and/or a movement of the respective wheel. For at least one of the lifting, pitching and rolling modal directions, the respective damping force is determined as a function of a predefined, constantly maintained degree of damping of respective modal direction.

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Stuttgart, Germany

David Caredda