Method and Apparatus for Preventing Rollover of a Vehicle
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Accused Products
Abstract
A method and apparatus for preventing roll in a vehicle utilizing a detection device which determines an actual yaw rate of the vehicle, an evaluation unit which determines a setpoint value and a threshold value for the yaw rate, and a control device for controlling vehicle units that influence the dynamics of the vehicle. The evaluation unit controls the vehicle units, by comparing the determined actual value of the yaw rate variable with the determined setpoint value; such that the actual value of the yaw rate variable assumes the determined setpoint value. If the setpoint value exceeds the threshold value, the vehicle the evaluation unit limits the determined setpoint value to the determined threshold value. According to the invention, the evaluation unit determines the threshold value of the yaw rate variable as a function of a threshold value of a roll angle variable which describes a roll angle of the vehicle.
26 Citations
36 Claims
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1-18. -18. (canceled)
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19. Apparatus for preventing rollover of a vehicle, said apparatus comprising:
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a detection device which determines an actual value of a yaw rate variable that describes the yaw rate of the vehicle;
an evaluation unit which determines a setpoint value of the yaw rate variable and a threshold value of the yaw rate variable that is suitable for limiting the setpoint value for avoiding rollover of the vehicle, and a control device for adjusting vehicle units to influence longitudinal and/or transverse dynamics of the vehicle;
wherein,the evaluation unit controls adjustment of the vehicle units, based on a comparison between the determined actual and setpoint values of the yaw rate variable, such that the determined actual value assumes the determined setpoint value; and
if the setpoint value of the yaw rate variable exceeds the threshold value of the yaw rate variable, to avoid rollover of the vehicle the evaluation unit limits the determined setpoint value of the yaw rate variable to the determined threshold value of the yaw rate variable;
wherein, the evaluation unit determines the threshold value of the yaw rate variable as a function of a threshold value of a roll angle variable which describes a roll angle of the vehicle. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method for preventing roll in a vehicle, comprising:
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determining an actual value of a yaw rate variable describing the yaw rate of the vehicle;
determining a setpoint value of the yaw rate variable and a threshold value of the yaw rate variable;
comparing the determined actual value of the yaw rate variable and the determined setpoint value of the yaw rate variable;
controlling longitudinal or transversal dynamics of the vehicle in such a way as to cause the determined actual value of the yaw rate variable to assume the determined setpoint value of the yaw rate variable; and
if the setpoint value of the yaw rate variable exceeds the threshold value of the yaw rate variable, to avoid rollover of the vehicle, limiting the determined setpoint value of the yaw rate variable to the determined threshold value of the yaw rate variable;
wherein, the threshold value of the yaw rate variable is determined as a function of a threshold value of a roll angle variable which describes a roll angle of the vehicle.
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Specification