Circuit configuration for an automative vehicle having traction slip control
AssigneeAlfred Teves GmbH
InventorsAlexander Kolbe, Klaus Honus
Life of this patent
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Abstract
A variable control threshold (RS) is formed by a circuit configuration for the traction slip control through brake management, with the control threshold being composed of a basic threshold (GS) and a portion derived from the wheel slip acceleration. The wheel slip (VR) is compared to the control threshold to determine a control deviation, i.e. the difference between the control threshold (RS) and the wheel slip (VR). The brake pressure pattern (p), during a traction slip control process is controlled in response to the wheel slip acceleration.
Claims11
Traction slip control apparatus for a wheel mounted on a vehicle, said apparatus comprising:
- means for setting a basic threshold corresponding to a predetermined traction slip value;
- means for developing an indication of the speed of a wheel mounted on a vehicle;
- means for developing an indication of the speed of said vehicle on which said wheel is mounted;
- means responsive to said indication of wheel speed and said indication of vehicle speed for developing an indication of wheel slip;
- means responsive to said indication of wheel slip for developing an indication of wheel slip acceleration;
- means for comparing said indication of wheel slip with a variable control threshold of wheel slip dependent 17 upon said basic threshold and said wheel slip acceleration and for developing a traction slip control when said indication of wheel slip exceeds said control threshold;
- and means responsive to said traction slip control for controlling the operation of a brake associated with said wheel.
A circuit configuration for an automotive vehicle having traction slip control for controlling brake pressure in a wheel brake associated with a wheel mounted on said automotive vehicle, said circuit configuration comprising:
- (a) means for developing an indication of the speed of a wheel mounted on a vehicle;
- (b) means for developing an indication of the speed of said vehicle on which said wheel is mounted;
- (c) means responsive to said indication of wheel speed and said indication of vehicle speed for developing an indication of wheel slip;
- (d) means responsive to said indication of wheel slip for developing an indication of wheel slip acceleration;
- (e) means for setting a basic threshold corresponding to a predetermined traction slip value;
- (f) means for developing a variable control threshold of wheel slip dependent upon said basic threshold and said wheel slip acceleration;
- (g) means for comparing said indication of wheel slip with said variable control threshold and for developing a traction slip control when said indication of wheel slip exceeds said control threshold;
- (h) means for determining a control deviation representative of the difference between said variable control threshold and said wheel slip;
- and
- (i) means, responsive to said traction slip control and said control deviation, for controlling the brake pressure of a wheel brake associated with said wheel.
Dependencies are inferred from the claim text.