Controlling an electrically actuable parking brake in the event of failure of a speed signal

摘要

A technique for controlling an electrically actuable parking brake of a motor vehicle in the event of failure of a first signal indicating a speed of the motor vehicle comprises the steps of continuously closing the parking brake as long as a second signal indicating a driver request to close the parking brake is detected, and opening the parking brake, provided that the parking brake is in a partially open state, as long as an absence of the second signal is detected.

主权项

1. A method of controlling an electrically actuable parking brake of a motor vehicle comprising the steps of:
determining an absence of a first signal indicating a speed of the motor vehicle; closing continuously the parking brake as long as a second signal indicating a driver request to close the parking brake is detected; and opening the parking brake if an absence of the second signal is detected, provided that the parking brake is in a partially open state; wherein the parking brake upon detecting the second signal is continuously closed until a closing force reaches a maximum closing force; wherein the parking brake is maintained in the fully closed state, provided that the parking brake in the absence of the second signal is in the fully closed state; and wherein the absence of the first signal is determined if no first signal is available or the first signal is implausible or undefined.