Fluid-pressure and analogous brake systems – Speed-controlled – Braking pressure demand or braking force desire
Patent
1997-03-14
1998-06-09
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Braking pressure demand or braking force desire
303 3, 3031134, 303166, 303DIG4, B60T 1374
Patent
active
057624070
ABSTRACT:
A brake system control apparatus comprising: a sensor providing an output signal indicative of operator foot force on a brake pedal; an actuator coupled to wheel brake and controlling a wheel brake force applied by the wheel brake responsive to a control signal; a controller coupled to the sensor and the actuator and including a differentiator (60) receiving the output signal and determining a rate of change of the operator foot force on the brake pedal, a comparator (62) for comparing the rate of change to a predetermined minimum, wherein a rate of change above the predetermined minimum indicates a quick application of brake pedal force by the vehicle driver, a brake gain adjuster (64) for increasing a gain of the brake system when the rate of change is above the predetermined minimum, a brake command generator (72, 74) determining a control signal in response to the increased gain when the rate of change of brake force is above the predetermined minimum and responsive to a base gain when the rate of change of brake pedal force is not above the predetermined minimum, wherein, when a rate of change of brake force above the predetermined minimum is detected, the vehicle brake system has an effective gain higher than the base gain
REFERENCES:
patent: 4327414 (1982-04-01), Klein
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patent: 5207770 (1993-05-01), Fecher
patent: 5427442 (1995-06-01), Heibel
patent: 5539641 (1996-07-01), Littlejohn
patent: 5586814 (1996-12-01), Steiner et al.
patent: 5707115 (1998-01-01), Bodie et al.
Littlejohn Deron Craig
Stacey Scott Alan
Butler Douglas C.
General Motors Corporation
Simon Anthony Luke
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