Control device and method for operating a brake system of a vehicle

A control device for a brake system of a vehicle that includes a hydraulic device and a brake booster, the control device comprising:

• an electronic device coupled to the hydraulic device and the brake booster, wherein the electronic device is configured to:
• determine, based on (a) a specified braking of a driver of the vehicle or of an automatic control system of the vehicle, (b) a first item of information relating to a current usability of the hydraulic device, and (c) a second item of information relating to a current usability of a brake booster of the brake system:
• a first target portion of an increase of brake pressure in at least one wheel brake cylinder of the brake system by an amount corresponding to the specified braking that is to be provided by the hydraulic device;
• and
• a second target portion of the increase that is to be provided by the brake booster;
• and
• control at least one of the hydraulic device and the brake booster so that the first target portion is provided by the hydraulic device and the second target portion is provided by the brake booster.

A brake system for a vehicle, the brake system comprising:

• a wheel brake cylinder;
• a hydraulic device;
• a brake booster;
• and
• an electronic device coupled to the hydraulic device and the brake booster, wherein the electronic device is configured to:
• determine, based on (a) a specified braking of a driver of the vehicle or of an automatic control system of the vehicle, (b) a first item of information relating to a current usability of the hydraulic device, and (c) a second item of information relating to a current usability of a brake booster of the brake system:
• a first target portion of an increase of brake pressure in the wheel brake cylinder by an amount corresponding to the specified braking that is to be provided by the hydraulic device;
• and
• a second target portion of the increase that is to be provided by the brake booster;
• and
• control at least one of the hydraulic device and the brake booster so that the first target portion is provided by the hydraulic device and the second target portion is provided by the brake booster.

An automated driving capable vehicle comprising:

• at least one environmental acquisition sensor;
• a brake system that includes a wheel brake cylinder, a hydraulic device, a brake booster, and an electronic device coupled to the hydraulic device and the brake booster;
• and
• an automatic control system coupled to the electronic device, wherein:
• the automatic control system is configured to:
• determine a target trajectory of the vehicle based on at least one sensor signal of the at least one environmental acquisition sensor;
• based on the determined target trajectory and a current speed of the vehicle, determine a specified braking;
• and
• output the determined specified braking to the electronic device;
• and
• the electronic device is configured to:
• determine, based on (a) the specified braking, (b) a first item of information relating to a current usability of the hydraulic device, and (c) a second item of information relating to a current usability of a brake booster of the brake system:
• a first target portion of an increase of brake pressure in the wheel brake cylinder by an amount corresponding to the specified braking that is to be provided by the hydraulic device;
• and
• a second target portion of the increase that is to be provided by the brake booster;
• and
• control at least one of the hydraulic device and the brake booster so that the first target portion is provided by the hydraulic device and the second target portion is provided by the brake booster.

A method for operating a brake system of a vehicle, the brake system including a hydraulic device and a brake booster, the method comprising:

• determining, by a control device and based on (a) a specified braking of a driver of the vehicle or of an automatic control system of the vehicle, (b) a first item of information relating to a current usability of the hydraulic device, and (c) a second item of information relating to a current usability of a brake booster of the brake system:
• a first target portion of an increase of brake pressure in at least one wheel brake cylinder of the brake system by an amount corresponding to the specified braking that is to be provided by the hydraulic device;
• and
• a second target portion of the increase that is to be provided by the brake booster;
• and
• controlling, by the control device, at least one of the hydraulic device and the brake booster so that the first target portion is provided by the hydraulic device and the second target portion is provided by the brake booster.

A method for automated driving, comprising:

• determining, by a control system, a target trajectory of a vehicle based on at least one sensor signal of at least one environmental acquisition sensor;
• based on the determined target trajectory and a current vehicle speed, determining, by the control system, a specified braking;
• determining, by the control system and based on (a) the specified braking, (b) a first item of information relating to a current usability of a hydraulic device of a brake system, and (c) a second item of information relating to a current usability of a brake booster of the brake system:
• a first target portion of an increase of brake pressure in at least one wheel brake cylinder of the brake system by an amount corresponding to the specified braking that is to be provided by the hydraulic device;
• and
• a second target portion of the increase that is to be provided by the brake booster;
• and
• controlling, by the control system, at least one of the hydraulic device and the brake booster so that the first target portion is provided by the hydraulic device and the second target portion is provided by the brake booster.