METHOD FOR CONTROLLING AT LEAST ONE ELECTROMECHANICAL PARKING BRAKE UNIT OF AN ELECTROMECHANICAL PARKING BRAKE SYSTEM

摘要

The invention relates to a method for controlling at least one electromechanical parking brake unit (BME) (EPB) of a parking brake system in a vehicle. According to said method, the current vehicle speed (V) is detected by means of a speed sensor system (VS) in the form of a speed measuring signal (vs), and a deceleration measuring signal (as) displaying the current vehicle deceleration is detected by means of at least one acceleration sensor system (BS). In the event of a defective speed measuring signal (vs) or a failure of the speed sensor system (GS), the electromechanical parking brake system (EPB) is operated in an emergency operation mode wherein, at the beginning of a braking process, a dynamic braking function (DBF) is provided by the electromechanical parking brake unit (BME). Advantageously, the current vehicle deceleration (A) is determined from the deceleration measuring signal (as) and compared with a pre-determined minimum deceleration value (MA), and if the determined current vehicle deceleration (A) falls short of the pre-determined minimum deceleration value (MA) in the emergency operation mode, a static brake function (SBF) is provided by the electromechanical parking brake unit (BME).