Braking device for a motor vehicle, and method for controlling the braking device
AssigneeRobert Bosch GmbH
InventorsFrank Baehrle-Miller, Dieter Blattert, Tobias Putzer
Life of this patent
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Abstract
A method of applying an automated parking brake of a motor vehicle includes at least two phases. In a first preceding phase, no clamping force is produced by the parking brake. In a second following phase, a clamping force is produced by the parking brake via a controllable parking brake actuator configured to produce the clamping force. The method further includes detecting a transition from the first phase to the second phase based on a temporal progression of a specific parameter of a control of the parking brake actuator. A control unit is configured to perform according to the method, and a parking brake is configured to perform according to the method.
Claims12
A method of applying an automated parking brake of a motor vehicle, the parking brake having a controllable parking brake actuator configured to generate a clamping force, the method comprising:
- detecting a transition from a first phase to a second phase;
- and
- modifying a procedure for controlling the parking brake actuator in response to detecting the transition;
- wherein the first phase occurs while (i) an electric current is being supplied to the parking brake actuator and (ii) there is no build up of the clamping force via the parking brake,
- wherein the second phase, which follows the first phase, includes building up the clamping force via the parking brake and is indicated by the electric current to the parking brake actuator continuously increasing as the clamping force is being built up, and
- wherein the transition is detected by detecting a continuous increase in the electric current.
A control unit for a motor vehicle with a parking brake having a controllable parking brake actuator configured to generate a clamping force in the parking brake, the control unit comprising:
- a detection mechanism configured to detect a transition from a first phase of a parking brake application process to a second phase of the parking brake application process based on a progression over time of a specific parameter of the procedure of controlling the parking brake actuator,
- wherein the first phase occurs while (i) an electric current is being supplied to the parking brake actuator and (ii) there is no build up of the clamping force,
- wherein the second phase, which follows the first phase, includes building up the clamping force via the parking brake and is indicated by the electric current to the parking brake actuator continuously increasing as the clamping force is being built up,
- wherein the transition is detected by detecting a continuous increase in the electric current, and
- wherein the control unit is configured to:
- control the controllable parking brake actuator according to a procedure in response to detecting the transition;
- move the parking brake into a defined starting position;
- and
- input information indicative of the transition into a memory device for recalibration purposes.
An automated parking brake for a motor vehicle, comprising:
- a parking brake actuator configured to:
- in a first preceding phase of an at least two phase parking brake application process, not build up a clamping force in the parking brake while an electric current is being supplied to the parking brake actuator;
- in a second following phase of the parking brake application process, build up a clamping force in the parking brake as the electric current to the parking brake actuator continuously increases;
- and
- detect a transition from the first phase to the second phase based on a detected a continuous increase in the electric current;
- and
- a control unit configured to:
- control the parking brake actuator according to a procedure in response to detecting the transition;
- move the parking brake into a defined starting position;
- and
- input information indicative of the transition into a memory device for recalibration purposes.
Dependencies are inferred from the claim text.