Device for Determining the Roll Angle and System and Method for Roll Stabilization of a Motor Vehicle

A system for roll stabilization of a motor vehicle, in particular of buses, transporters, trucks or the like, with:

• a device for determining the roll angle (φ) of the motor vehicle, which is designed according to at least one of the preceding claims;
• an analyzer arrangement (2, 130) for comparing the roll angle (φ) determined with a predetermined threshold value;
• and with
• an activation arrangement (130), which activates an appropriate stabilization measure in the event of the predetermined threshold value being exceeded by the roll angle (φ) determined.

A method for roll stabilization of a motor vehicle, in particular of buses, transporters, trucks or the like, with the following steps:

• detecting a combined signal consisting of yaw rate and roll rate by means of a yaw rate sensor arrangement (1) which is assigned to a driving dynamics control system and is installed in the motor vehicle with its measuring axis inclined at a predetermined inclination angle (α) in relation to the vertical axis in the plane passing through the longitudinal axis and the vertical axis of the motor vehicle;
• splitting the combined signal detected by the yaw rate sensor arrangement (1) into the two signal components yaw rate and roll rate by means of at least one observer (3), in particular a Kalman filter, for determining the roll angle (φ);
• comparing the roll angle (φ) determined with a predetermined threshold value by means of an analyzer arrangement (2, 130), and
• activating an appropriate stabilization measure by means of an activation arrangement (130) in the event of the predetermined threshold value being exceeded by the roll angle (φ) determined.