Method and system for operating a brake system of a motor vehicle having traction control

A method for operating a brake system of a motor vehicle including a traction control, comprising the steps of:

• assigning sensors of the brake system to individual vehicle wheels;
• causing each of the sensors to detect a quantity representing at least one of a driving force and a braking force acting between a road surface and a respective one of the vehicle wheels;
• analyzing pressure quantities representing a brake pressure established for the respective one of the vehicle wheels for an operation of the brake system including the traction control;
• determining the pressure quantities as a function of the quantities detected with the sensors;
• and wherein:
• the quantities detected by the sensors each results from at least one of a movement and a rotation of the respective one of the vehicle wheels, and wherein the method further comprising the step of:
• causing the sensors to output the quantities as one of phase-modulated signals and amplitude-modulated signals.

A method for operating a brake system of a motor vehicle including a traction control, comprising the steps of:

• assigning sensors of the brake system to individual vehicle wheels;
• causing each of the sensors to detect a quantity representing at least one of a driving force and a braking force acting between a road surface and a respective one of the vehicle wheels;
• analyzing pressure quantities representing a brake pressure established for the respective one of the vehicle wheels for an operation of the brake system including the traction control;
• determining the pressure quantities as a function of the quantities detected with the sensors;
• and further comprising the steps of:
• causing an analyzer unit to determine a quantity describing a circumferential force of the respective one of the vehicle wheels from the quantities detected by the sensors for the vehicle wheels;
• and
• determining the brake pressure on the basis of the quantity describing the circumferential force.

A method for operating a brake system of a motor vehicle including a traction control, comprising the steps of:

• assigning sensors of the brake system to individual vehicle wheels;
• causing each of the sensors to detect a quantity representing at least one of a driving force and a braking force acting between a road surface and a respective one of the vehicle wheels;
• analyzing pressure quantities representing a brake pressure established for the respective one of the vehicle wheels for an operation of the brake system including the traction control;
• determining the pressure quantities as a function of the quantities detected with the sensors;
• sending the pressure quantities as actual values directly to a control unit for brakes of the motor vehicle;
• and further comprising the steps of:
• subjecting newly determined ones of the pressure quantities for a given brake pressure for each one of the vehicle wheels to a PT1 filtering after being entered into the control unit;
• performing a check to determine whether a predetermined rate of a pressure change representing a maximum allowed pressure difference between two of the pressure quantities determined at successive times is exceeded and whether the detected quantities are within predetermined pressure limits;
• and
• when conditions are met, sending the newly determined pressure quantities as the actual values to valve controls.

A system, comprising:

• a control unit;
• and
• a processing unit arranged in the control unit, the processing unit;
• entering pressure quantities determined for a prevailing brake pressure,
• subjecting the pressure quantities thus entered to a PT1 filtering,
• checking whether a predetermined rate of pressure change representing a maximum allowed pressure difference between two of the pressure quantities determined at successive times is exceeded and whether the pressure quantities are within predetermined pressure limits, and
• when conditions are met, sending newly determined ones of the pressure quantities as actual values to a valve control.