Electronic parking brake and method for controlling an electronic parking brake

摘要

In a method for controlling an electronic parking brake system and an electronic parking brake system, a travel-optimized method is used to achieve the released state of the parking brake system. When the parking brake is applied, travel-force values are detected and a plausibility check is run, the values being used to arrive at a first optimized position when the brake is released. If the residual force applied to the brake exceeds a threshold value, the parking brake is released even more until the value remains just under the threshold value or until a maximum defined release travel is achieved.

主权项

1. A method for controlling an electronic brake, comprising the steps of:
during application of the brake:
moving the brake in an application direction until a predetermined force associated with the brake is achieved,determining and recording a first position of the brake at which the predetermined force associated with the brake is achieved, andfurther moving the brake in the application direction from the first position to a locked position, during release of the brake, moving said brake first from the locked position to the first position recorded during the application of the brake, and then moving the brake a particular distance further in the release direction to a second position, such that the second position is based on the first position recorded during the application of the brake, performing an initial force measurement after the second position has been achieved, comparing the force measurement in the second position with a predetermined release force, and determining whether to move the brake further in the release direction based on the result of the comparison of the force measurement in the second position with the predetermined release force, and performing at least one further movement of the brake in the release direction and performing an additional force measurement after each further movement, if the force measurement in the second position is greater than the predetermined release force, wherein the initial force measurement is the first force measurement performed during the release of the brake, such that no force measurements are performed during the release of the brake until the brake passes the first position associated with the predetermined force and reaches the second position based on, and further in the release direction than, the first position.