Method for Tightening an Electromechanical Brake, and Electromechanical Brake

摘要

A method and apparatus for retightening an electromechanical brake of a type having an actuator driven by an electric motor to provide parking brake functionality, which presses a brake element against a brake body during a force stroke. A number of successive force strokes are performed wherein the force strokes occur when the brake clamping force falls below a predefined minimum setpoint value, wherein the respective force stroke occurs such that a predefined maximum clamping force is not exceeded, and based on the initial and the expected end temperatures of the brake body, a total clamping force loss to be expected is determined. The time of a final force stroke is selected such that the sum of the forces provided by the preceding force strokes, the force of the final force stroke, and the clamping force loss still to be expected exceeds the total clamping force loss to be expected.

主权项

1. A method for retightening an electromechanical brake having an actuator which is driven by an electric motor, which actuator, to provide a parking brake functionality, presses a brake element against a brake body during a force stroke, wherein comprising for retightening, the steps of:
performing a number of the force strokes in a temporally successive manner wherein each of the force strokes is performed when the clamping force of the brake falls below a predefined clamping force minimum setpoint value, wherein each of the force strokes is performed such that a predefined maximum clamping force is not exceeded, wherein, on the basis of the initial temperature of the brake body and the expected end temperature of the brake body, a total clamping force loss to be expected is determined, and wherein the time of a final one of the force strokes is selected such that, at the time, the sum of the forces provided by preceding force strokes of the number of force strokes, and the force of the final force stroke and the clamping force loss still to be expected exceeds the total clamping force loss to be expected.