Control apparatus and method for operating a vehicle equipped with an electric drive and / or braking system generating device

The invention relates to a control device (10) for an electric drive and / or generator device (58) equipped brake system having a first receiving device by means of which a default size of (14) with respect to a brake pressure in at least one wheel brake cylinders (54a, 54b) at least one brake circuit (50, 52) is receivable, a second receiving means, by means of which an actual value (18) relative to a pressure in the at least one brake circuit (50, 52) and / or the brake pressure in the at least one wheel brake cylinders (54a, 54b) is receivable, and a control device, by means of which is fixed a target mode is the electric drive and / or generator device (58) taking into account the received default size (14) and the received actual value (18), and a corresponding control signal (26) to the electric drive and / or generator device (58) can be output, so the electric drive and / or Generator device (58) by means of the control signal (26) is controllable in the determined desired mode. Furthermore, the invention relates to a method of operating a drive with an electric and / or generator device (58) equipped braking system.