Method and device for the computer-assisted calculation of the axle loads of a vehicle

• US 20070150172A1
• Filed: 02/20/2004
• Published: 06/28/2007
• Est. Priority Date: 02/21/2003
• Status: Active Grant

• Current Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Original Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Inventors: Horn, Matthias, Guecker, Ulrich, Hecker, Falk, Hummel, Stefan
• Granted Patent: US 7,702,433 B2
• Time in Patent Office: Days
• US Class Current: 701/124
• CPC Class Codes: B60T 2240/06 Wheel load; Wheel lift
• CPC Class Codes: B60T 8/172 Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters B60T8/17551 takes precedence

Abstract

A method and a device for the computer-assisted calculation of the axle load of a vehicle, in particular a commercial vehicle, in which the axle loads are calculated on the basis of a function f(λ), which describes the dependence of the ratio of the longitudinal force F_x to the vertical force F_z. in a wheel on the longitudinal slip λ.

Claims

1-9. -9. (canceled)

10. A method for a computer-assisted calculation of axle loads of a vehicle, the method comprising:

determining the axle loads based on a function which describes a dependence of a ratio of a longitudinal force to a vertical force at one wheel on a longitudinal slip.

11. The method of claim 10, wherein the axle loads are calculated in a range of the function in which the function is approximately linear, a slope of the function being specified.

12. The method of claim 11, wherein a curve of the function for values of the longitudinal slip of less than 8% is drawn upon.

13. The method of claim 10, wherein the longitudinal slip is determined as a differential slip between wheels of a driven axle and wheels of a non-driven axle.

14. The method of claim 10, wherein the longitudinal force is determined from torques acting on at least one driven wheel.

15. The method of claim 11, wherein the approximately linear slope of the function is first ascertained by experiment.

16. A device for providing a computer-assisted calculation of axle loads of a vehicle, comprising:

a determining arrangement for determining the axle loads based on a function which describes a dependence of a ratio of a longitudinal force to a vertical force at one wheel on a longitudinal slip.

17. The device of claim 16, wherein the determining arrangement determines the axle loads in a range of the function in which the function is approximately linear, a slope of the function being specified.

18. The device of claim 16, wherein the device includes sensors for measuring wheel speed.

19. The device of claim 16, wherein the device includes sensors for measuring forces acting on the wheel.

20. The device of claim 16, wherein the device includes sensors for measuring torques acting on the wheel.