METHOD FOR OPERATING A STEERING SYSTEM, A STEERING SYSTEM AND A VEHICLE

• US 20150251688A1
• Filed: 03/04/2015
• Published: 09/10/2015
• Est. Priority Date: 03/08/2014
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Mayer, Stefan
• Granted Patent: US 9,637,163 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B62D 15/00 Steering not otherwise provided for
• CPC Class Codes: B62D 5/006 power actuated
• CPC Class Codes: G05G 5/05 Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops G05G5/28 takes precedence

Abstract

A steering system of a vehicle includes a steering wheel, a steerable wheel mechanically decoupled from the steering wheel, a steering actuator for setting a rotational position of the steering wheel, a wheel steering drive for steering of the steerable wheel, and a controller for controlling the wheel steering drive and the steering wheel actuator. When the ignition is switched off, the steering wheel is moved with the steering wheel actuator automatically into a neutral position that is independent of a wheel angle of the steerable wheel.

Claims

1. A method for operating a steering system of a vehicle, wherein the steering system comprises a steering wheel, a steerable wheel mechanically decoupled from the steering wheel, a steering actuator for setting a rotational position of the steering wheel, a wheel steering drive for steering of the steerable wheel, and a controller for controlling the wheel steering drive and the steering wheel actuator, the method comprising

when ignition is switched off, moving the steering wheel with the steering wheel actuator automatically into a neutral position that is independent of a wheel angle of the steerable wheel.

2. The method of claim 1, wherein the steering wheel is automatically moved into the neutral position in response to one of the following actions:

immediately after the ignition is switched off,

upon confirmation by a driver, or

in response to feedback from a camera aimed at the driver.

3. The method of claim 1, wherein the steering wheel is automatically moved by the steering wheel actuator into a position corresponding to a steering angle of the steerable wheel in response to one of the following actions:

immediately when the ignition is switched on,

upon confirmation by a driver, or

in response to feedback from a camera aimed at the driver.

4. The method of claim 1, wherein the steering wheel is moved by the steering wheel actuator into the neutral position at the request from a driver regardless of a state of the ignition.

5. The method of claim 4, wherein the steering wheel is moved by the steering wheel actuator into a position corresponding to a wheel angle of the steerable wheel in response to a request from the driver.

6. The method of claim 1, wherein moving the steering wheel into the neutral position is enabled only when the vehicle is stopped.

7. The method of claim 1, further comprising preventing the vehicle from driving away when the steering wheel is in the neutral position and when the neutral position does not correspond to the wheel angle of the steerable wheel

8. The method of claim 1, wherein the neutral position is a position, in which the driver has an unobstructed view of predetermined areas of an instrument cluster of the vehicle.

9. The method of claim 8, wherein the predetermined areas of the instrument cluster comprise at least one component selected from a camera for driver observation, a multifunction display screen, a status indicator, a mileage indicator, a fuel gauge and an indicator lamp.

10. The method of claim 1, wherein in the neutral position, a flattened portion of the steering wheel comes to rest so as to point downward.

11. A steering system of a vehicle, comprising:

a steering wheel,

a steerable wheel that is mechanically decoupled from the steering wheel,

a steering wheel actuator for setting a rotational position of the steering wheel,

a wheel steering drive for steering the steerable wheel, and

a controller for controlling the wheel steering drive and the steering-wheel actuator, said controller being configured to operate the steering system so as to automatically move the steering wheel with the steering wheel actuator into a neutral position that is independent of a wheel angle of the steerable wheel, when ignition is switched off.

12. A vehicle comprising a steering system comprising:

a steering wheel,

a steerable wheel that is mechanically decoupled from the steering wheel,

a steering wheel actuator for setting a rotational position of the steering wheel,

a wheel steering drive for steering the steerable wheel, and

a controller for controlling the wheel steering drive and the steering-wheel actuator, wherein the controller is configured to operate the steering system so as to automatically move the steering wheel with the steering wheel actuator into a neutral position that is independent of a wheel angle of the steerable wheel, when ignition is switched off.