Method for operating a brake system, computer program product, control circuit and control unit
AssigneeZF Active Safety GmbH
InventorHeinrich Plewnia
Life of this patent
Estimating the term…
Abstract
A method for operating a brake system of a motor vehicle is disclosed. The brake system comprises a drive arrangement for applying and/or boosting a brake force, wherein the drive arrangement has an electric drive. The method comprises the step: short-circuiting the electric drive as soon as the electric drive has been disconnected from a supply source and/or a voltage drop and/or current drop has taken place. A computer program, control circuit and a control unit or system having multiple control units is also disclosed.
Claims18
A method for operating a brake system of a motor vehicle, wherein the brake system comprises a drive arrangement for applying and/or boosting a brake force, wherein the drive arrangement has an electric drive, wherein the method comprises the step:
- short-circuiting the electric drive as soon as the electric drive has been disconnected from a supply voltage and/or a supply current.
A control circuit (1), which is developed and intended for use in a motor vehicle, comprising:
- a first line, which is connected to a first phase and/or to a first electrical connection of an electric drive of a drive arrangement of a brake system of a motor vehicle, wherein the drive arrangement is designed to apply and/or boost a brake force;
- a second line, which is connected to a second phase and/or to a second electrical connection of the electric drive of the drive arrangement;
- a controllable switch, which is designed to disconnect the first line and the second line in an open state and to connect them to one another in a closed state;
- and
- a switch control module, which is configured to control switching states of the controllable switch, wherein the switch is opened in a first control state and the switch-is closed in a second control state, wherein the switch control module is also configured to switch from the first control state to the second control state as soon as the electric drive has been disconnected from a supply source and/or a voltage drop and/or current drop has taken place.
A method for operating a brake system of a motor vehicle, wherein the brake system comprises a drive arrangement for applying and/or boosting a brake force, wherein the drive arrangement has an electric drive, wherein the method comprises the step:
- short-circuiting the electric drive as soon as the electric drive has been disconnected from a supply source and/or a voltage drop and/or current drop has taken place;
- wherein the short-circuiting takes place in the voltage-free and/or current-free state of the electric drive.
A control circuit, which is developed and intended for use in a motor vehicle, comprising:
- a first line, which is connected to a first phase and/or to a first electrical connection of an electric drive of a drive arrangement of a brake system of a motor vehicle, wherein the drive arrangement is designed to apply and/or boost a brake force;
- a second line, which is connected to a second phase and/or to a second electrical connection of the electric drive of the drive arrangement;
- a third line, which is connected to a third phase and/or to a third electrical connection of the electric drive of the drive arrangement;
- a controllable switch, which is designed to disconnect the first line, the second line, and the third line in an open state and to connect them to one another in a closed state;
- and
- a switch control module, which is developed and intended to control the switching states of the controllable switch, wherein the switch is opened in a first control state and the switch is closed in a second control state, wherein the switch control module is furthermore developed and intended to switch from the first control state to the second control state as soon as the electric drive has been disconnected from a supply source and/or a voltage drop and/or current drop has taken place.
Dependencies are inferred from the claim text.