Method for controlling a braking system for motor vehicles

摘要

A method for controlling a braking system for motor vehicles having a hydraulically actuatable wheel brake which can be actuated by an electronically controllable pressure supply device having a cylinderpiston arrangement with a hydraulic pressure chamber, the piston of which can be displaced by an electromechanical actuator such that a pre-defined desired pressure value can be adjusted, a position of the pressure supply device being detected, and an actual pressure (Pv, act) of the pressure supply device being determined by a measurement device. To allow braking pressure to build dynamically at low or medium desired pressure values, manipulated variables (ωact,soll,Mact,soll) are formed for the electromechanical actuator (1) on the basis of the pre-defined desired pressure value and of an actual pressure value (PV,Dach), determined on the basis of the desired pressure value (Pv,soll) by weighted addition of the actual pressure (Pv,act) and of a model pressure (Pv,Mod) calculated from a current position (Xact) of the pressure supply device.

主权项

1. A method for controlling a braking system for motor vehicles, the method comprising the steps of:
providing a hydraulically actuable wheel brake which can be actuated by means of an electronically controllable pressure supply device having a cylinder-piston arrangement with a hydraulic pressure chamber, and a piston which is configured to be displaced by an electromechanical actuator, with the result that a predefined setpoint pressure value (PV,Setp) in the hydraulic pressure chamber can be adjusted, detecting a position (Xact) of the pressure supply device, determining an actual pressure (PV, act) of the pressure supply device by a measuring device, forming manipulated variables (ωact,Setp, Mact,Setp) for an electromechanical actuator formed on the basis of the predefined setpoint pressure value (PV,Setp) and an acquired pressure value (PV, acq), and determining the acquired pressure value (PV, acq) as a function of the setpoint pressure value (PV,Setp) by weighted addition of the actual pressure (PV, act) and of a model pressure (PV,Mod) calculated from a the position (Xact) of the pressure supply device.