Method and system for split mu control for anti-lock brake syste

Details Method and system for split mu control for anti-lock brake syste Method and system for split mu control for anti-lock brake syste

1995-02-06

1996-09-03

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Speed-controlled

Split coefficient of friction

303148, 303186, B60T 832

Patent

active

055517692

ABSTRACT:
A method and system for modifying anti-lock brake control to a vehicle braking on a split mu surface. Each of the wheel speeds are sensed and compared to a wheel speed reference. If the speed of only one of the front wheels departs from the wheel speed reference in excess of a predetermined slip threshold, a split mu control is activated. Upon detecting a departure of the high mu wheel, a first pressure control profile is applied to the low mu wheel, while a second control pressure profile different from the first pressure control profile is applied to the high mu wheel. Once the vehicle has transitioned from braking on a split mu surface to braking on a homogeneous mu surface, normal ABS control pressure is applied to the wheels.

REFERENCES:
patent: 4313166 (1982-01-01), Rode et al.
patent: 4349876 (1982-09-01), Lindemann
patent: 4489382 (1984-12-01), Jonner et al.
patent: 5286098 (1994-02-01), Okuba
patent: 5419623 (1995-05-01), Weber

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