System and method for stabilizing a motor vehicle

A system for stabilizing a motor vehicle comprising:

• at least one optical speed sensor for sensing a longitudinal speed and a transversal speed of the motor vehicle, by evaluating light which is reflected on a roadway surface on which the motor vehicle is moving during operation;
• a steering angle sensor for sensing a wheel lock angle of the motor vehicle;
• a calculation unit which is configured to calculate an attitude angle of the motor vehicle from a sensed longitudinal speed and a sensed transversal speed;
• an evaluation unit which is coupled to the calculation unit and is configured to compare the attitude angle with a predefined attitude angle threshold value, and compare the wheel lock angle to a predefined wheel angle threshold,
• wherein an oversteering situation is detected when the attitude angle is greater than the predefined attitude angle threshold, and
• wherein an understeering situation is detected when the attitude angle is less than the predefined attitude angle threshold and the wheel lock angle is greater than the wheel angle threshold;
• and
• an actuation unit which is coupled to the evaluation unit, and an actuator including a hydraulic unit which influences a driving behavior of the motor vehicle,
• wherein the actuation unit is configured to control the hydraulic unit in accordance to the attitude angle in the detected oversteering situation, and
• wherein, in the detected understeering situation, the actuation unit is configured to control at least one of:
• 1) the hydraulic unit in accordance to the attitude angle, and 2) a drive engine of the motor vehicle in accordance to the attitude angle, such that at least one of a speed and acceleration of the motor vehicle are reduced.