Electronic stability program for a land vehicle

• US 8,346,428 B2
• Filed: 10/12/2006
• Issued: 01/01/2013
• 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
• Primary Examiner(s): Tarcza, Thomas
• Assistant Examiner(s): Khatib, Rami
• Application Number:
  US12/083,403
• Publication Number:
  US 20090319118A1
• Time in Patent Office: 2,273 Days
• Field of Search: 701/29, 701/31, 701/36, 701/41, 701/43, 701/48, 701/70, 701/76, 701/92
• US Class Current: 701/30.4
• 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, the steering intervention system including at least one of an internal plausibility check and a self test for an input signal;

a braking system which builds up braking forces one of independently of the driver and in addition to the driver, the braking system including at least one of an internal plausibility check and a self test for an input signal; and

a sensor arrangement associated with the steering intervention device and the braking system, the sensor arrangement configured to capture at least one of an actual yaw angular velocity and an actual transverse acceleration and feed an output of the sensor arrangement as an input signal representing at least one of the captured actual yaw angular velocity and the actual transverse acceleration to the steering intervention device and the braking system,

with at least one of the internal plausibility check mechanisms and the self tests included in the steering intervention device and the brake system being applied to the input signal, 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 a function of 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 within a range of 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, braking forces which have not yet reached a safety-critical level continue to built up.

5. The electronic vehicle dynamics regulation system according to claim 3, wherein in the steering intervention device, during the execution of the signal checks, steering moments or steering angles which have not yet reached a safety-critical level continue to built up.

6. The electronic vehicle dynamics regulation system claim 2, wherein in the braking system, during the execution of the signal checks, braking forces have not yet reached a safety-critical level continue to be built up.

7. 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 have not yet reached a safety-critical level continue to be built up.

8. The electronic vehicle dynamics regulation system according to claim 1, wherein the request rate of the actual magnitudes in the steering intervention device is adapted to the signal check period.

9. The electronic vehicle dynamics regulation system claim 8, wherein in the braking system, during the execution of the signal checks, braking forces which have not yet reached a safety-critical level continue to built up.

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

11. The electronic vehicle dynamics regulation system claim 1, wherein in the braking system, during the execution of the signal checks, the braking forces which have not yet reached a safety-critical level continue to be built up.

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