Method for electrically actuated braking of a motor vehicle and

Details Method for electrically actuated braking of a motor vehicle and Method for electrically actuated braking of a motor vehicle and

1998-10-26

2000-06-27

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Specific mu determination

188 721, 188158, 188162, 303166, B60T 832

Patent

active

060798017

ABSTRACT:
Electrical, continuously acting wheel brake actuators are individually controlled. The following calculation and control procedures are carried out in a control unit: the wheel slip and the wheel acceleration are calculated for each wheel; if the wheel slip or the wheel acceleration exceed a predefined first threshold value, then the respective actual value of the brake pressure is stored; the quotient of the stored actual value and a pressure value which is characteristic of the vehicle is formed for the respective wheel, and the coefficient of friction .mu. is thus estimated; and an ABS brake-pressure closed-loop control operation is carried out at the individual wheels using the value.

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patent: 5944392 (1999-08-01), Tachihata et al.

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