SYSTEM AND METHOD OF STEERING OVERRIDE END DETECTION FOR AUTOMATED LANE CENTERING

• US 20120283912A1
• Filed: 05/05/2011
• Published: 11/08/2012
• Est. Priority Date: 05/05/2011
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Lee, Jin-Woo, Litkouhi, Bakhtiar Brian
• Application Number:
  US13/101,346
• Publication Number:
  US 20120283912A1
• Time in Patent Office: Days
• US Class Current: 701/41
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2050/143 Alarm means
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 30/12 Lane keeping
• CPC Class Codes: B60W 50/082 Selecting or switching between different modes of propelling
• CPC Class Codes: B60W 50/10 Interpretation of driver requests or demands
• CPC Class Codes: B62D 1/286 Systems for interrupting non-mechanical steering due to driver intervention
• CPC Class Codes: B62D 15/025 Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation B62D1/28 takes precedence

Abstract

A method and system may measure one or more vehicle dynamics measurements and activate an automatic vehicle control system based on the one or more measurements. The vehicle dynamics measurements may include a vehicle steering angle measurement, vehicle lane offset measurement, or other vehicle dynamics measurements. The automatic vehicle control system may include an automated lane centering system, lane keeping assist, or other autonomous vehicle steering control system.

Claims

1. A method comprising:

measuring one or more vehicle dynamics measurements of a vehicle; and

activating an automatic vehicle control system based on the one or more measured vehicle dynamics measurements.

2. The method of claim 1, wherein the one or more vehicle dynamics measurements comprise a vehicle steering angle measurement and a vehicle lane offset measurement.

3. The method of claim 1, comprising:

calculating, based on the one or more measured vehicle dynamics measurements, one or more average vehicle dynamics measurement values during a pre-determined period of time; and

calculating, based on the one or more calculated average vehicle dynamics measurement values, one or more vehicle dynamics measurement thresholds.

4. The method of claim 1, wherein activating the automatic vehicle control system based on the one or more measured vehicle dynamics measurements comprises determining whether the one or more measured vehicle dynamics measurements exceeds one or more vehicle dynamics measurement thresholds.

5. The method of claim 1, wherein the automatic vehicle control system comprises an automated lane centering system.

6. The method of claim 1, wherein activating the automatic vehicle control system based on the one or more measured vehicle dynamics measurements comprises determining whether a path of the vehicle is steady.

7. The method of claim 1, comprising providing an alert prior to activating the automatic vehicle control system.

8. A system comprising:

an automated vehicle steering system;

one or more sensors; and

a controller to;

measure one or more vehicle dynamics measurements of a vehicle using the one or more sensors; and

activate the automated vehicle steering system based on the one or more measured vehicle dynamics measurements.

9. The system of claim 8, wherein the one or more vehicle dynamics measurements comprise a vehicle steering measurement and a vehicle lane offset measurement.

10. The system of claim 8, wherein the controller is to:

calculate, based on the one or more measured vehicle dynamics measurements, one or more average vehicle dynamics measurement values during a predetermined period of time; and

calculate, based on the one or more calculated average vehicle dynamics measurement values, one or more vehicle dynamics measurement thresholds.

11. The system of claim 8, wherein to activate the automated vehicle steering system based on the one or more measured vehicle dynamics measurements the controller is to determine whether the one or more measured vehicle dynamics measurements exceeds one or more calculated vehicle dynamics measurement thresholds.

12. The system of claim 8, wherein the automated vehicle steering system comprises an automated lane centering system.

13. The system of claim 8, wherein the controller is to activate the automated vehicle steering system if a path of the vehicle is steady.

14. The system of claim 8, wherein the controller is to provide one or more alerts prior to activating the automated vehicle steering system.

15. A method comprising:

in a vehicle, evaluating a plurality of vehicle motion conditions using a plurality of sensors associated with the vehicle; and

engaging an autonomous driving application if the evaluated vehicle motion conditions indicate the operator of the vehicle is not overriding the autonomous driving application.

16. The method of claim 15, wherein the plurality of vehicle motion conditions comprise a vehicle steering angle condition and a vehicle relative position with respect to one or more road features.

17. The method of claim 15, wherein the plurality of sensors are a steering angle sensor and a camera.

18. The method of claim 15, comprising:

determining, based on the one or more evaluated vehicle motion conditions, one or more average vehicle motion conditions values during a predetermined amount of time; and

determining, based on the one or more determined average vehicle motion condition values, one or more vehicle motion condition thresholds.

19. The method of claim 15, wherein engaging the autonomous driving application if the evaluated vehicle motion conditions indicate the operator of the vehicle is not overriding the autonomous driving application comprises evaluating whether the one or more measured vehicle motion conditions exceeds one or more vehicle motion condition thresholds.

20. The method of claim 15, wherein the autonomous driving application comprises adaptive lane centering.