US 11,590,958 B2 · Method for detecting undesirable vibrations of an actuator of an electromechanical brake, electronically controlled braking system, computer program product, control unit and motor vehicle

Abstract

A method for detecting undesirable vibrations of an actuator of an electromechanical brake includes the steps of: (1) providing an electrical signal comprising at least one piece of information about a current consumption of the actuator or a parameter correlated with the current consumption; (2) monitoring an operation of the actuator on the basis of the gradient of the electrical signal in such a way that after switching on the actuator and preferably after a subsequent delay time, which includes determining: whether the amount of an initial instantaneous value of the gradient exceeds the amount of a threshold and whether a subsequent second instantaneous value of the gradient has an inverted sign compared to the first instantaneous value; (3) evaluating the results to ensure that an undesirable vibration is assessed as detected the aforementioned conditions are met.

Claims13

Dependent claims

A method for detecting undesirable vibrations of an actuator of an electromechanical brake, including the following steps:

providing an electrical signal comprising at least one piece of information about a current consumption of the actuator or a parameter correlated with the current consumption;
monitoring an operation of the actuator on the basis of the gradient of the electrical signal in such a way that after switching on the actuator and after a subsequent delay time, including determining whether the amount of an initial instantaneous value of the gradient exceeds the amount of a threshold, and determining whether a subsequent second instantaneous value of the gradient has an inverted sign compared to the first instantaneous value;
and
evaluating results from monitoring the operation to ensure that an undesirable vibration is assessed as detected if the amount of the initial instantaneous value of the gradient exceeds the amount of a threshold and the subsequent second instantaneous value of the gradient has an inverted sign compared to the first instantaneous value.

1 more element

An electronically controlled braking system for a motor vehicle, comprising:

an electromechanical brake with an actuator for clamping and/or opening the electromechanical brake;
a control unit for controlling the actuator, the control unit being configured to provide an electrical signal comprising at least one piece of information about a current consumption of the actuator or a parameter correlated with the current consumption, the control unit being configured to monitor an operation of the actuator on the basis of the gradient of the electrical signal in order to check whether the amount of a first instantaneous value of the gradient exceeds the amount of a threshold, and a subsequent second instantaneous value of the gradient has an inverted sign compared to the first instantaneous value;
wherein the control unit assesses an undesirable vibration as detected if the amount of the initial instantaneous value of the gradient exceeds the amount of a threshold and the subsequent second instantaneous value of the gradient has an inverted sign compared to the first instantaneous value.

Dependencies are inferred from the claim text.

Method for detecting undesirable vibrations of an actuator of an electromechanical brake, electronically controlled braking system, computer program product, control unit and motor vehicle

Life of this patent

Method for detecting undesirable vibrations of an actuator of an electromechanical brake, electronically controlled braking system, computer program product, control unit and motor vehicle

Life of this patent

Abstract

Claims13