Method for Operating a Brake System, and Brake System

摘要

The invention relates to a method for operating a brake system, in particular for motor vehicles, having an electrically controllable pressure supplying device for hydraulically actuating at least one wheel brake. The pressure supplying device includes a cylinder-piston arrangement with a hydraulic pressure chamber. The piston of the cylinder-piston arrangement being movable by an electromechanical actuator in order to generate a specificable target pressure in the hydraulic pressure chamber. An actuator torque and an actuator position of the electromechanical actuator are ascertained, and a pressure value for the pressure in the hydraulic pressure chamber is determined using the actuator toque and the actuator position taking into consideration a pressure model.

主权项

1. A method for operating a motor vehicle brake system comprising an electrically controllable pressure supplying device (20) for hydraulically activating at least one wheel brake (9), wherein the pressure supplying device (20) includes a cylinder-piston arrangement with a hydraulic pressure chamber (4), and a piston (3) which can be moved by an electromechanical actuator (1, 2) in order to generate a pre-defineable setpoint pressure (PV,setp) in the hydraulic pressure chamber (4), detecting an actuator torque (Tactr), and an actuator position (φactr), of the electromechanical actutator (1, 2) and determining an estimated pressure value (PV,est) for the pressure (PV) (30) in the hydraulic pressure chamber (4) using the actuator torque (Tactr) and the actuator position (φactr) taking into account a pressure model.