Power transmission system having deliberate drive torque provision

Patent metadata

Field	Value
Publication number	US-11912258-B2
Application number	US-202017112078-A
Country	US
Kind code	B2
Filing date	Dec 4, 2020
Priority date	Jan 16, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A transmission system for a vehicle including a drive, at least one wheel and at least one brake having an ABS system. The drive is configured to drive the at least one wheel and the at least one brake is configured to brake the at least one wheel. The power transmission system is configured to also drive the at least one wheel braked by the at least one brake during a braking process, which enters a control range of the ABS system, at the same time using a drive torque.

First claim

The invention claimed is:

1. A power transmission system for a vehicle comprising a drive, at least one wheel, and at least one brake having an anti-lock braking system,
wherein the drive is configured to drive the at least one wheel, and the at least one brake is configured to brake the at least one wheel,
wherein the power transmission system is configured to drive the at least one wheel braked by the at least one brake with a drive torque applied during a braking process within a control range of the anti-lock braking system,
wherein the power transmission system is further configured to compare a measured speed of the at least one wheel braked by the at least one brake with at least one further measured value obtained by at least one additional sensor to establish a slip of the at least one wheel, and
wherein the at least one additional sensor comprises a camera.

2. The power transmission system as claimed in claim 1 , wherein the power transmission system is configured to overcompensate for the drive torque during the braking process.

3. The power transmission system as claimed in claim 1 , wherein the power transmission system comprises an ascertainment unit which is configured to ascertain a need to provide the drive torque.

4. The power transmission system as claimed in claim 1 , wherein is the power transmission system is further configured to model an optimum speed of the at least one wheel braked by the at least one brake based on a currently expected slip and the comparison between the measured speed and the at least one further measured value.

5. The power transmission system as claimed in claim 1 , wherein the at least one further measured value comprises a wheel speed of a wheel different from that of the at least one wheel braked by the at least one brake.

6. The power transmission system as claimed in claim 1 , wherein the at least one additional sensor further comprises a GPS sensor.

7. The power transmission system as claimed in claim 1 , wherein the at least one additional sensor further comprises a LIDAR sensor.

8. The power transmission system as claimed in claim 1 , wherein the at least one additional sensor further comprises an accelerometer.

9. The power transmission system as claimed in claim 1 , wherein the at least one further measured value comprises a velocity of the vehicle.

10. The power transmission system as claimed in claim 1 , wherein the at least one further measured value comprises a velocity vector of the vehicle.

11. A method for maximizing a power transmission from a wheel to a roadway, comprising:
measuring a speed of at least one wheel braked by at least one brake within a control range of an anti-lock braking system;
comparing the speed of the at least one wheel with at least one further measured value obtained by at least one additional sensor to establish a slip of the at least one wheel,
applying a drive torque to the at least one wheel while the at least one wheel is braked by the at least one brake to bias the at least one wheel towards an optimal slip,
wherein the at least one additional sensor comprises a camera.

12. The method as claimed in claim 11 , further comprising modeling an optimum speed of the at least one wheel braked by the at least one brake based on a currently expected slip and the comparison between the measured speed and the at least one further measured value.

13. The method as claimed in claim 11 , wherein the drive torque is applied while the anti-lock braking system is active.

14. A power transmission system for a vehicle comprising a drive, at least one wheel, and at least one brake having an anti-lock braking system,
wherein the drive is configured to drive the at least one wheel, and the at least one brake is configured to brake the at least one wheel,
wherein the power transmission system is configured to drive the at least one wheel braked by the at least one brake with a drive torque applied during a braking process within a control range of the anti-lock braking system,
wherein the power transmission system is further configured to compare a measured speed of the at least one wheel braked by the at least one brake with at least one further measured value obtained by at least one additional sensor to establish a slip of the at least one wheel, and
wherein the at least one additional sensor comprises a LIDAR sensor.

Assignees

• Audi Ag

Inventors

• Baum Marcus

Classifications

• B60T8/1761 Primary

  responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure · CPC title

• B60W10/04

  including control of propulsion units · CPC title

• B60W30/181

  Preparing for stopping · CPC title

• B60T8/172

  Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters {(B60T8/17551 takes precedence)} · CPC title

• B60W30/18109

  Braking · CPC title