Method for operating an actuator for a motor vehicle, respective actuator and method for operating an arrangement of an actuator and a control unit for a motor vehicle

Patent metadata

Field	Value
Publication number	US-11919586-B2
Application number	US-202217654903-A
Country	US
Kind code	B2
Filing date	Mar 15, 2022
Priority date	Mar 17, 2021
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

The application relates to a method for operating an actuator for a motor vehicle, the actuator having an actuating drive and a signal input. The actuating drive is operated as a function of a setpoint value received via the signal input and a threshold value stored in the actuator for setting an actual value of the actuator to the setpoint value, wherein the threshold value is set equal to the setpoint value when the actuator leaves an operating range of the actuator defined by the threshold value of the setpoint value. The application further relates to an actuator for a motor vehicle and a method for operating an arrangement of an actuator and a control unit for a motor vehicle.

First claim

The invention claimed is:

1. A method for operating an actuator for a motor vehicle, said actuator having an actuating drive and a signal input, wherein the actuating drive is operated as a function of a setpoint value received via the signal input and a threshold value stored in the actuator for setting an actual value of the actuator to the setpoint value, wherein the threshold value is set equal to the setpoint value when the actuator leaves an operating range of the actuator defined by the threshold value of the setpoint value.

2. The method according to claim 1 , wherein an actuating speed of the actuator is reduced with decreasing distance between the actual value and the threshold value.

3. The method according to claim 1 , wherein the actual value is limited to the threshold value.

4. The method according to claim 1 , wherein the threshold value set equal to the setpoint value is stored in the actuator in a non-volatile memory.

5. The method according to claim 1 , wherein the actuator compares an identifier received via the signal input with an identifier stored in the actuator, and if the identifier deviates from the stored identifier, the threshold value is reset to an initial value.

6. The method according to claim 1 , wherein the actuator is used for driving a rear-axle steering of the motor vehicle.

7. An actuator for a motor vehicle for carrying out the method according claim 1 , said actuator having an actuating drive and a signal input, wherein the actuator is intended and designed for operating the actuating drive as a function of a setpoint value received via the signal input and a threshold value stored in the actuator for setting an actual value of the actuator to the setpoint value, wherein the threshold value is set equal to the setpoint value when the actuator leaves an operating range of the actuator defined by the threshold value of the setpoint value.

8. A method for operating an arrangement composed of an actuator and a control unit for a motor vehicle, wherein the actuator has an actuating drive and a signal input, wherein the actuating drive is operated as a function of a setpoint value received via the signal input from the control unit and a threshold value stored in the actuator for setting an actual value of the actuator to the setpoint value, wherein the threshold value is set equal to the setpoint value when the actuator leaves an operating range of the actuator defined by the threshold value of the setpoint value.

9. The method according to claim 8 , wherein a maximum setpoint value is stored in the control unit and the threshold value stored in the actuator is set to an initial value that differs from the maximum setpoint value.

10. The method according to claim 9 , wherein a preset value within a value range limited by the maximum setpoint is transmitted to the actuator as the setpoint, so that the threshold value adjusts to the maximum setpoint value.

Assignees

• Audi Ag
• Porsche Ag

Inventors

• Mihailescu Adrian
• Baber Moritz

Classifications

• B62D6/00 Primary

  Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits (means for initiating a change in direction B62D1/00; steering valves B62D5/06; combined with means for inclining the vehicle body or wheels on bends B62D9/00) · CPC title

• B62D5/02 Primary

  mechanical, e.g. using a power-take-off mechanism for taking power from a rotating shaft of the vehicle and applying it to the steering gear · CPC title

• B62D7/1581 Primary

  characterised by comprising an electrical interconnecting system between the steering control means of the different axles · CPC title

• B62D5/04

  electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear · CPC title

• B62D5/0457

  characterised by control features of the drive means as such · CPC title