Apparatus for providing pressure for an actuating unit of a motor vehicle brake system and method for controlling the apparatus

摘要

The invention relates to a device for providing pressure for an actuating unit of a vehicle brake system, in particular for a vehicle brake system of the type "brake - by - wire ", comprising a pneumatic motor - pumps - unit 3 with a pump 6 and a the pump 6 driving motor 7, wherein the motor - pumps - unit 3, as a function of a pressure level or the pressure difference in a pneumatic brake booster 1 of the operating unit by means of an electronic control unit 10, 12 is controlled, with the pressure level in a chamber or a pressure difference between the two chambers of the brake booster 1 is detected by means of a sensor 9.About the availability of the service brake function as high as possible and in this case to keep as high as possible a redundancy in particular in relation to malfunction or failure of the electronics or of the on-board electrical system to be obtained, it is proposed according to the invention that the control unit 10, 12 for driving the motor - pumps - unit 3 has a logic module and a power module, which are provided separately from one another.