DEVICE FOR SUPPLYING PRESSURE TO AN ACTUATION UNIT OF A MOTOR VEHICLE BRAKING SYSTEM AND METHOD FOR CONTROLLING SAID DEVICE

摘要

The invention relates to a device for supplying pressure to an actuation device for a motor vehicle braking system, in particular for a Brake-by-wire type motor vehicle braking system. Said device comprises a pneumatic motor-pump-unit (3) comprising a pump (6) and a motor (7) which drives the pump (6). The motor-pump unit (3) is controlled by an electronic control unit (10, 12) according to a pressure level and/or pressure difference in a pneumatic brake booster (1) of the actuation unit. The pressure level in a chamber and/or pressure difference between two chambers of the brake booster (1) is detected by means of a sensor (9). According to the invention, the control unit (10, 12), which is used to control the motor-pump unit (3), comprises a logic module and a power module which are separated from each other in order to maintain the availability of the operational brake function as high as possible and also to obtain a possible high redundancy, in particular in relation to errors or failure of the electronic system or of the border network.