Zf Active Safety Gmbh

Michael Bast

Benedikt Ohlig

Erwin Michels

Matthias Fuchs

Steve Scherer

Thomas Puetz

A control system having an ACC control, which for use in a host motor vehicle (ego) is configured and intended for recognizing a preceding motor vehicle (alter) and preferably preceding objects, based on surroundings data obtained from at least one front camera sensor associated with the host motor vehicle (ego). The front camera sensor (FKS) is configured for providing to an electronic control unit of the control system the surroundings data that represent an area in front of the host motor vehicle (ego). The control system is at least configured and intended for detecting another motor vehicle (alter) in traffic that is in front of the host motor vehicle (ego), by means of the at least one front camera sensor (FKS), determining a distance between the host motor vehicle (ego) and the preceding motor vehicle (alter), based on data from the front camera sensor (FKS),

Control system and control method for driving a motor vehicle

The present disclosure relates to a method for operating a vehicle brake. The vehicle brake includes a hydraulic service brake having an actuating piston, which for generating a first braking force component is movable, under the action of a hydraulic pressure, into an actuating position in which the actuating piston presses a friction lining against a rotatingly supported brake disc, and an electric parking brake, with an actuating element, that is designed to build up a second braking force component that acts on the brake disc. The method includes ascertaining the hydraulic pressure, determining a first braking force component, establishing a second braking force component to be set by means of the parking brake, based on the first braking force component and a desired total braking force, and establishing a position of the actuating element of the parking brake to be set.

Technique for operating a vehicle brake having a hydraulic service brake and an electric parking brake

The present disclosure relates to a method for operating a vehicle brake system which includes the following steps: () determining a first wear value, which indicates wear of the friction lining of the vehicle brake, by taking into account at least one of the relevant parameters related to the operational history of the vehicle; () In dependence upon whether the first wear value meets a predetermined criterion, measuring the wear of the friction lining by moving the parking brake unit and by recording the curve of operating parameters of the parking brake unit while moving; () determining, based on the measurement, a second wear value, which indicates wear of the friction lining of the vehicle brake. The present disclosure also relates to a vehicle braking system, as well as a computer program and a control unit for implementing the method.

Technique for determining a wear valve, which indicates wear of a friction lining of a vehicle brake

A method for operating a vehicle brake, wherein the vehicle brake comprises a service brake having an actuating piston, which can be moved into an actuation position in order to produce a braking force by the action of a hydraulic pressure, and wherein the vehicle brake also comprises a parking brake unit, which is designed to move over a first motion range without producing a braking force and is also designed to move over a second motion range, in which the parking brake unit is supported against the actuating piston and a braking force is thus changed, wherein the first and second motion ranges transition into each other at a support point, wherein the method is performed in the pressureless state or at a hydraulic pressure below a predefined threshold value and comprises the following steps: a) moving the parking brake unit from the first into the second motion range or vice versa; b) recording the curve of an operating parameter of the parking brake unit during step a); and c) determining the position of the support point on the basis of the curve of the operating parameter.

Technique for determining the position of a support point of a parking brake unit

A method for characterizing an electromechanical actuator unit for a vehicle brake, the electromechanical actuator unit comprising an electric motor and an actuator coupled to the electric motor. The actuator can be moved over a first area of movement without generation of a brake force and over a second area of movement with modification of a brake force. The method is carried out when the actuator moves within the first area of movement, and comprises the following steps: a) a voltage applied to the electric motor is interrupted, b) at least one parameter is determined while the electric motor runs in the generator mode, and c) at least one value is determined for a motor constant of the electric motor on the basis of the at least one parameter. The invention also relates to a vehicle brake, as well as to a computer program and a control unit for implementing the method.

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Bendorf, Germany

Michael Bast