Electronic Stabilty Program for a Land Vehicle

• US 20090319118A1
• Filed: 10/12/2006
• Published: 12/24/2009
• Est. Priority Date: 10/13/2005
• Status: Active Grant

• Current Assignee: Lucas Automotive GmbH (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: Lucas Automotive GmbH (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Knechtges, Josef
• Granted Patent: US 8,346,428 B2
• Time in Patent Office: Days
• US Class Current: 701/31
• CPC Class Codes: B60T 2260/02 Active Steering, Steer-by-Wire
• CPC Class Codes: B60T 2270/413 Plausibility monitoring, cross check, redundancy
• CPC Class Codes: B60T 8/17555 specially adapted for enhancing driver or passenger comfort, e.g. soft intervention or pre-actuation strategies
• CPC Class Codes: B60T 8/885 using electrical circuitry
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2520/125 Lateral acceleration
• CPC Class Codes: B60W 2520/14 Yaw
• CPC Class Codes: B62D 6/003 in order to control vehicle yaw movement, i.e. around a vertical axis B62D6/007 takes precedence

Abstract

The invention concerns an electronic vehicle dynamics regulation system for a land vehicle, which system is set up for steering and braking intervention, and with which a sensor arrangement is associated, which sensor arrangement, for a steering intervention device and for a braking system which builds up braking forces independently of or in addition to the driver, captures the yaw angular velocity and/or the transverse acceleration and feeds them to the steering intervention device and braking system.

Claims

1. An electronic vehicle dynamics regulation system for a land vehicle that is set up for steering and braking intervention, the vehicle dynamics regulation system comprising:

a steering intervention device;

a braking system which builds up braking forces one of independently of the driver and in addition to the driver; and

a sensor arrangement associated with the steering intervention device and the braking system, the sensor arrangement operative to capture at least one of a yaw angular velocity and a transverse acceleration and feed them to the steering intervention device and the braking system, wherein in at least one of the steering intervention device and the braking system, for the signals which reproduce at least one of the yaw angular velocity and the transverse acceleration, at least one of the internal plausibility check mechanisms and the self tests, by means of which the signals must be checked for plausibility and correctness, are provided, that at least one of the internal plausibility check mechanisms and the self tests end their checking of the signals within a signal check period which is sufficient so that the signals, as actual magnitudes, enter the calculation of vehicle-dynamic setpoint magnitudes, and that the request rate of the actual magnitudes of the steering intervention device is adapted to the request rate of the actual magnitudes of the braking system.

2. The electronic vehicle dynamics regulation system according to claim 1, wherein the signal check period is 50-500 msec.

3. The electronic vehicle dynamics regulation system according to claim 2, wherein the request rate of the actual magnitudes in the steering intervention device is adapted to the signal check period.

4. The electronic vehicle dynamics regulation system claim 3, wherein in the braking system, during the execution of the signal checks, at most braking forces which do not yet have a safety-critical level are built up.

5. The electronic vehicle dynamics regulation system according to claim 4, wherein in the steering intervention device, during the execution of the signal checks, at most steering moments or steering angles which do not yet have a safety-critical level are built up.

6. The electronic vehicle dynamics regulation system according to claim 3, wherein the request rate of the actual magnitudes in the steering intervention device is adapted to the signal check period.

7. The electronic vehicle dynamics regulation system claim 6, wherein in the braking system, during the execution of the signal checks, at most braking forces which do not yet have a safety-critical level are built up.

8. The electronic vehicle dynamics regulation system according to claim 7, wherein in the steering intervention device, during the execution of the signal checks, at most steering moments or steering angles which do -not yet have a safety-critical level are built up.

9. The electronic vehicle dynamics regulation system claim 1, wherein in the braking system, during the execution of the signal checks, at most braking forces which do not yet have a safety-critical level are built up.

10. The electronic vehicle dynamics regulation system according to claim 1, wherein in the steering intervention device, during the execution of the signal checks, at most steering moments or steering angles which do not yet have a safety-critical level are built up.

11. The electronic vehicle dynamics regulation system claim 2, wherein in the braking system, during the execution of the signal checks, at most braking forces which do not yet have a safety-critical level are built up.

12. The electronic vehicle dynamics regulation system according to claim 11, wherein in the steering intervention device, during the execution of the signal checks, at most steering moments or steering angles which do not yet have a safety-critical level are built up.

13. The electronic vehicle dynamics regulation system according to claim 2, wherein in the steering intervention device, during the execution of the signal checks, at most steering moments or steering angles which do not yet have a safety-critical level are built up.