Process for the determining travel-situation-dependent steering angle
First Claim
1. A process for determination of a travel-situation-dependent steering angle of a vehicle, comprising the steps of specifying a characteristic value for transverse motion of the vehicle based upon yaw angular velocity and floating angle;
- determining an actual value of yaw angular velocity of the vehicle;
deriving a criterion, based upon a non-linear relationship between lateral wheel forces and the floating angle, as a function of the actual value of the yaw angular velocity and the characteristic value;
determining the travel-situation-dependent steering angle as a function of the derived criteria; and
intervening in steering of the vehicle via brake control utilizing the travel-situation-dependent steering angle and the non-linear relationship to prevent vehicle instability during a critical driving state.
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Accused Products
Abstract
A process is provided for determining a travel-situation-dependent steering angle, in which a specification of a characteristic value for the transverse motion of the vehicle is given, the actual value of the yaw angular velocity of the vehicle is evaluated, and a criterion is derived as a function of the actual value of the yaw angular velocity as well as the predetermined characteristic value. As a function of the criterion, an influencing of the travel behavior of the vehicle takes place by an intervention in the vehicle steering. For the derivation of the criterion, additionally the side slip angle, the steering angle and the vehicle velocity are evaluated, and, for the derivation of the criterion, the lateral forces at the vehicle wheels are taken into consideration.
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Citations
10 Claims
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1. A process for determination of a travel-situation-dependent steering angle of a vehicle, comprising the steps of specifying a characteristic value for transverse motion of the vehicle based upon yaw angular velocity and floating angle;
- determining an actual value of yaw angular velocity of the vehicle;
deriving a criterion, based upon a non-linear relationship between lateral wheel forces and the floating angle, as a function of the actual value of the yaw angular velocity and the characteristic value;
determining the travel-situation-dependent steering angle as a function of the derived criteria; and
intervening in steering of the vehicle via brake control utilizing the travel-situation-dependent steering angle and the non-linear relationship to prevent vehicle instability during a critical driving state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- determining an actual value of yaw angular velocity of the vehicle;
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9. An apparatus for determining a travel-situation-dependent steering angle of a vehicle, comprising means for specifying a characteristic value for transverse motion of the vehicle based upon yaw angular velocity and floating angle;
- means for evaluating an actual value of yaw angular velocity of the vehicle;
means for deriving a criterion, based upon a non-linear relationship between lateral wheel forces and the floating angle, as a function of the actual value of the yaw angular velocity and the characteristic value;
means for determining the travel-situation-dependent steering angle as a function of the derived criteria; and
means for intervening in steering of the vehicle via brake control utilizing the non-linear relationship and the travel-situation-dependent steering angle to prevent vehicle instability during a critical driving state. - View Dependent Claims (10)
- means for evaluating an actual value of yaw angular velocity of the vehicle;
Specification