摘要:
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
摘要:
In a vehicle with a right front wheel brake, a right rear wheel brake, a left front wheel brake and a left rear wheel brake, a brake control system method for distributing a commanded yaw force to the wheel brakes according to the step of distributing the yaw force to the vehicle wheel brakes according to a priority hierarchy wherein each successive vehicle wheel brake in the priority hierarchy is commanded only if a sum of all previous vehicle wheel brakes in the priority hierarchy have not achieved transfer of the commanded yaw force to the vehicle body.
摘要:
An improved cold temperature compensation control method for an EH braking system in which cold temperature operation is detected without requiring a temperature sensor. An electronic controller monitors the pressure developed by one or more electrically operated boost units for a characteristic pressure profile that occurs in cold temperature operation of the braking system, and adjusts the control strategy when the characteristic pressure profile is detected. The characteristic pressure profile is deemed by its frequency and amplitude parameters; specifically, a frequency above a threshold frequency, and an amplitude above a threshold amplitude. In a first mechanization, the controller responds to a detected cold temperature operation by reducing the gain of a closed-loop pressure control, while in a second mechanization, the controller responds by switching from the closed-loop pressure control to a closed-loop position control.