Method and system for detecting and compensating for rough roads

Details Method and system for detecting and compensating for rough roads Method and system for detecting and compensating for rough roads

1994-09-09

1997-05-06

Teska, Kevin J.

Boots, shoes, and leggings

36442601, 303178, 303162, 303195, 3031134, 180197, G06F 770, B60T 834

Patent

active

056277555

ABSTRACT:
Methods and systems for detecting and compensating for rough roads in an anti-lock brake system (ABS) through the use of a desensitizer factor which is utilized in a slip threshold desensitization circuit to desensitize slip threshold are described. The desensitizer factor is dependent on wheel acceleration. The desensitizer factor normally decays over time as long as the current value of the desensitizer factor is greater than a peak value of wheel acceleration. Otherwise, the desensitizer factor assumes the peak value of wheel acceleration, thereby "capturing" the peaks of wheel acceleration. The system includes a wheel speed sensor for measuring the speed of each of the vehicle wheels, and a control unit for determining whether the anti-lock brake system should be activated based on the value of the desensitized slip threshold. The desensitized slip threshold is utilized by the ABS to compensate for vehicle travel on rough roads.

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