Method of controlling an inhomogeneous roadway

Details Method of controlling an inhomogeneous roadway Method of controlling an inhomogeneous roadway

2006-09-14

2011-11-29

Winner, Tony H. (Department: 3611)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

C701S041000, C303S147000, C303S148000, C303S050000

Reexamination Certificate

active

08068967

ABSTRACT:
To determine an inhomogeneous roadway in μ-split situation during active ABS control and active yaw torque control (YTC) of a front wheel (HM-wheel) on the high-coefficient-of-friction side, it is arranged that at least the following conditions must be satisfied before the μ-split situation is flagged:a) a front wheel (LM wheel) undergoes ABS control in a pressure reduction phase; a1) the LM front wheel is in the first ABS control cycle;b) the LM front wheel exhibits a deceleration exceeding a defined threshold;c) the locking pressure level of the LM front wheel is lower than a defined threshold;d) the front wheel on the high-coefficient-of-friction side (HM wheel) exhibits a filtered deceleration that is lower than a defined threshold;e) the vehicle deceleration calculated by ABS is lower than a defined threshold.

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