Method and device for the control of a brake system
AssigneeRobert Bosch GmbH
InventorsAndreas Erban, Thomas Rader, Alexander Haeussler, Manfred Gerdes, Ralf Gutmann, Thomas Glasstetter
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Abstract
A method and a device for the control of a vehicle brake system are described. In this context, the setpoint values for each wheel are corrected based on the difference between brake pressures in at least one wheel brake of two different brake circuits.
Claims9
A method for the control of a brake system, each wheel brake being assigned an electrically controllable brake final control element which is actuated as a function of a setpoint value predefined for each wheel, an actual value being determined which represents the braking force acting at each wheel brake,
- wherein the deviation between the actual values of at least two wheel brakes of two brake circuits is determined, and the setpoint values for the control of the wheel brakes are corrected as a function of this deviation.
The method according to one of the preceding claims,
- wherein the deviation value is calculated based on vehicle variables.
The method according to one of the preceding claims,
- wherein the variable that represents the braking force is the brake pressure.
The method according to one of the preceding claims,
- wherein the setpoint values for the individual wheel brakes are calculated based on a total setpoint value, the distribution of the total setpoint value among the individual wheels being corrected as a function of the deviation value.
The method according to one of the preceding claims,
- wherein the total setpoint value is determined by a deceleration regulator which brings the vehicle's speed in line with a predefined setpoint value.
The method according to one of the preceding claims,
- wherein the brake pressure is determined as a function of vehicle variables, according to the following equation:
- PRAD=CLAM/CP (λ*FN*RRAD+MKAHALB/CLAM), the additive term not being used in the case of a non-driven wheel.
A device for the control of a brake system, having a control unit that generates trigger signals for brake actuators assigned to each wheel brake, and having trigger signal generators which determine the trigger signals based on predefined values predefined for each wheel brake, a variable that represents the braking force at the wheel brake in question being determined as the actual value,
- wherein a regulator is provided, which corrects the predefined values predefined for each wheel brake as a function of the difference between the actual values of at least two wheel brakes of at least two brake circuits.
Dependencies are inferred from the claim text.