Method for boosting the brake power in an electronically slip-controllable vehicle brake system, as well as an electronically slip-controllable vehicle brake system

An electronically slip-controllable vehicle brake system that includes an actuating device that is able to be acted upon by a driver, a power brake unit for boosting a driver-applied actuating force, a brake master cylinder that is able to be acted upon by the power brake unit, a wheel brake that is connected to a brake master cylinder, and an electronic traction-slip control device for modulating a brake pressure of the wheel brake, an electronic control unit, and a pressure generator that can be activated by an electronically controllable drive unit, the pressure generator being associated with the traction-slip control device, wherein the electronic control unit controls the pressure generator in accordance with a method comprising:

• recording a first input signal that signals an existing braking intention;
• converting the first input signal into a first evaluation signal by the electronic control unit;
• recording a second input signal that represents a brake pressure in a pressure chamber of the brake master cylinder;
• converting the second input signal into a second evaluation signal;
• and
• mathematically summing the first evaluation signal and the second evaluation signal in order to ascertain a composite signal, which, by electronically controlling the pressure generator accordingly, the traction-slip control device sets as the brake pressure.