Method and system for unified vehicle dynamics control

• US 6,721,636 B1
• Filed: 06/03/2003
• Issued: 04/13/2004
• Est. Priority Date: 06/03/2003
• Status: Expired due to Term

• Current Assignee: BWI Company Limited SA (Shougang Corporation)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Gade, Prasad
• Primary Examiner(s): Camby, Richard M.
• Application Number:
  US10/453,120
• Time in Patent Office: 315 Days
• Field of Search: 701/1, 701/3, 701/36, 701/41, 701/42, 701/51, 701/55, 701/56, 701/67, 701/68, 701/70, 701/71-79
• US Class Current: 701/1
• CPC Class Codes: B60T 2270/86 Optimizing braking by using ESP vehicle or tire model
• CPC Class Codes: B60T 8/17551 determining control parameters related to vehicle stability used in the regulation, e.g. by calculations involving measured or detected parameters

Abstract

A system and method for unified vehicle dynamics control is described. A method for determining vehicle dynamics data, determining a vehicle dynamics reference model having at least one reference model parameter, and providing the reference model parameter to a closed-loop sliding mode control system is provided. A sliding mode control system substantially maintains the state of reference model parameters based on the vehicle dynamics reference model and the vehicle dynamics data. A method and system is directed to a computer readable medium containing a computer program comprising computer readable code for determining vehicle dynamics data, determining a vehicle dynamics reference model having at least one reference model parameter, and providing the reference model parameter to a closed-loop sliding mode control system.

Claims

1. A method for unified vehicle dynamics control comprising:

determining vehicle dynamics data;

determining a vehicle dynamics reference model having at least one reference model parameter;

providing the at least one reference model parameter to a closed-loop sliding mode control system; and

wherein the sliding mode control system initializes and substantially maintains the state of at least one reference model parameter on a hyperplane based on the vehicle dynamics reference model and the vehicle dynamics data.

2. The method of claim 1 wherein determining a vehicle dynamics reference model comprises:

receiving user selection data; and

configuring the vehicle dynamics reference model based on the user selection data and the vehicle dynamics data.

3. The method of claim 1 further comprising:

applying a weighting factor to a first reference model parameter and an at least second reference model parameter prior to providing the first reference model parameter and at least second reference model parameter to the sliding-mode control system.

4. The method of claim 3 wherein the vehicle dynamics reference model is a state-variable matrix comprising the first reference model parameter and the at least second reference model parameter.

5. The method of claim 1 wherein the at least one reference model parameter is selected from the group consisting of yaw rate, roll angle, side slip angle and roll rate.

6. The method of claim 1 wherein the sliding mode control system is a software module configured on a central command controller.

7. The method of claim 1 wherein the sliding mode control system is a decentralized control system linked through a vehicle communication bus.

8. The method of claim 1 wherein the vehicle dynamics data is the output of a device selected from the group consisting of a speed sensor, a lateral acceleration sensor, and a steering wheel angle position sensor.

9. A computer readable medium containing a computer program comprising:

computer readable code for determining vehicle dynamics data;

computer readable code for determining a vehicle dynamics reference model having at least one reference model parameter;

computer readable code for providing the at least one reference model parameter to a closed-loop sliding mode control system; and

wherein the sliding mode control system initializes and substantially maintains the state of at least one reference model parameter on a hyperplane based on the vehicle dynamics reference model and the vehicle dynamics data.

10. The computer readable code of claim 9 wherein determining a vehicle dynamics reference model comprises:

configuring the vehicle dynamics reference model based on received user selection data and the vehicle dynamics data.

11. The computer readable medium of claim 9 further comprising:

computer readable code for applying a weighting factor to a first reference model parameter and an at least second reference model parameter prior to providing the first reference model parameter and at least second reference model parameter to the sliding-mode control system.

12. The computer readable code of claim 11 wherein the vehicle dynamics reference model is a state-variable matrix comprising the first reference model parameter and the at least second reference model parameter.

13. The computer readable medium of claim 9 wherein the at least one reference model parameter is selected from the group consisting of yaw rate, roll angle, side slip angle and roll rate.

14. The computer readable medium of claim 9 wherein the sliding mode control system is a software module configured on a central command controller.

15. The computer readable of claim 9 wherein the sliding mode control system is a decentralized control system linked through a vehicle communication bus.

16. The computer readable medium of claim 9 wherein the vehicle dynamics data is the output of a device selected from the group consisting of a speed sensor, a lateral acceleration sensor, and a steering wheel angle position sensor.

17. A vehicle including a system for unified vehicle dynamics control comprising:

means for determining vehicle dynamics data;

means for determining a vehicle dynamics reference model having at least one reference model parameter;

a closed-loop sliding mode control system;

means for providing the at least one reference model parameter to the sliding mode control system; and

wherein the sliding mode control system initializes and substantially maintains the state of at least one reference model parameter on a hyperplane based on the vehicle dynamics reference model and the vehicle dynamics data.