Method and device for stabilizing a vehicle

• US 20040078131A1
• Filed: 12/08/2003
• Published: 04/22/2004
• Est. Priority Date: 12/23/2000
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Faye, Ian, Leimbach, Klaus-Dieter
• Granted Patent: US 6,873,897 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60T 2230/03 Overturn, rollover
• CPC Class Codes: B60T 8/17552 responsive to the tire sideslip angle or the vehicle body slip angle
• CPC Class Codes: B60T 8/17554 specially adapted for enhancing stability around the vehicles longitudinal axle, i.e. roll-over prevention road vehicle drive control systems for roll-over prevention otherwise than by controlling a particular sub-unit B60W30/04

Abstract

A method of stabilizing a vehicle involving the following steps is described: recording characteristic actual values that describe the driving condition of a vehicle; determining setpoint values that are at least partially assigned to the actual values; comparing actual values and setpoint values and influencing actual values based on comparison results, one of the recorded actual values being characteristic of the roll state of the vehicle, and one of the setpoint values being assigned to the recorded actual value that is characteristic of the roll state of the vehicle. A device for stabilizing a vehicle is also described.

Claims

1. A method of stabilizing a vehicle including the steps:

recording characteristic actual values that describe the driving condition of a vehicle,

determining setpoint values that are at least partially assigned to the actual values,

comparing actual values and setpoint values, and

influencing actual values based on comparison results,

wherein

one of the recorded actual values is characteristic of the roll state of the vehicle and

one of the setpoint values is assigned to the recorded actual value that is characteristic of the roll state of the vehicle.

2. The method as recited in claim 1,

wherein

one of the recorded actual values is the yaw rate and

one of the setpoint values is assigned to the yaw rate.

3. The method as recited in claim 1 or 2,

wherein

one of the recorded actual values is the float angle and

one of the setpoint values is assigned to the float angle.

4. The method as recited in one of claims 1 through 3, wherein the roll angle is the actual value that is characteristic of the roll state of the vehicle.

5. The method as recited in one of the preceding claims, wherein a pressure change in an air spring of the vehicle is the actual value that is characteristic of the roll state of the vehicle.

6. The method as recited in one of the preceding claims, wherein setpoint values are determined from the input values of vehicle speed and steering angle.

7. The method as recited in one of the preceding claims, wherein actual values are influenced by braking interventions and/or engine interventions.

8. The method as recited in one of the preceding claims, wherein the roll angle is influenced by an actuator.

9. The method as recited in one of the preceding claims, wherein it is implemented in a vehicle combination for the roll regulation of the tractor vehicle and trailer or semitrailer.

10. A device for stabilizing a vehicle including

means for recording characteristic actual values that describe the driving condition of a vehicle,

means (10) for determining setpoint values that are at least partially assigned to the actual values,

means (12) for comparing actual values and setpoint values, and

means (16) for influencing actual values based on comparison results,

wherein

one of the recorded actual values is characteristic of the roll state of the vehicle and

one of the setpoint values is assigned to the recorded actual value that is characteristic of the roll state of the vehicle.

11. The device as recited in claim 10, wherein

one of the recorded actual values is the yaw rate and

one of the setpoint values is assigned to the yaw rate.

12. The device as recited in claim 10 or 11, wherein

one of the recorded actual values is the float angle and

one of the setpoint values is assigned to the float angle.

13. The device as recited in one of claims 10 through 12,

wherein

means are provided for measuring the roll angle and

the roll angle is the actual value that is characteristic of the roll state of the vehicle.

14. The device as recited in one of claims 10 through 13,

wherein

means are provided for measuring the pressure in an air spring of the vehicle and

a pressure change is the actual value that is characteristic of the roll state of the vehicle.

15. The device as recited in one of claims 10 through 14,

wherein

means are provided for measuring the vehicle speed and

means are provided for measuring the steering angle and

setpoint values are determined from the input values of vehicle speed and steering angle.

16. The device as recited in one of claims 10 through 15,

wherein

means are provided for influencing the braking system and/or the engine and

actual values are influenced by braking interventions and/or engine interventions.

17. The device as recited in one of claims 10 through 16,

wherein

an actuator is provided and

the roll angle is influenced by an actuator.

18. The device as recited in one of claims 10 through 17, wherein multiple roll regulation devices are provided for the tractor vehicle and trailer or semitrailer in a vehicle combination.