System and method for using vehicle operator intent to adjust vehicle control system response

• US 20030195684A1
• Filed: 04/11/2002
• Published: 10/16/2003
• Est. Priority Date: 04/11/2002
• Status: Active Grant

• Current Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust), Steering Solutions IP Holding Corporation (Nexteer Automotive Group Ltd.)
• Original Assignee: Delphi Technologies, Inc. (Aptiv PLC)
• Inventors: Martens, John D.
• Granted Patent: US 6,879,896 B2
• Time in Patent Office: Days
• US Class Current: 701/41
• CPC Class Codes: B60K 28/16 responsive to, or preventing, skidding of wheels brake control systems for vehicle drive stability B60T8/1755; arrangements responsive to a speed condition for adjusting wheel braking force B60T8/32; control of vehicle driving stability otherwise than by controlling the propulsion unit only B60W30/02; preventing wheel slippage by reducing power in rail vehicles B61C15/00
• CPC Class Codes: B60T 2220/02 Driver type; Driving style; Driver adaptive features
• CPC Class Codes: B60T 2260/02 Active Steering, Steer-by-Wire
• CPC Class Codes: B60T 2260/022 Rear-wheel steering; Four-wheel steering
• CPC Class Codes: B60W 10/06 including control of combustion engines
• 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 2050/0022 Gains, weighting coefficients or weighting functions
• CPC Class Codes: B60W 2050/0031 Mathematical model of the vehicle
• CPC Class Codes: B60W 2050/0052 Filtering, filters
• CPC Class Codes: B60W 2050/0075 Automatic parameter input, automatic initialising or calibrating means
• CPC Class Codes: B60W 2520/14 Yaw
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 2540/30 Driving style
• CPC Class Codes: B60W 30/18 Propelling the vehicle
• CPC Class Codes: B62D 7/159 characterised by computing methods or stabilisation processes or systems, e.g. responding to yaw rate, lateral wind, load, road condition
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A system and method for using vehicle operator intent to adjust a vehicle control system, comprising: at least one vehicle control system associated with a vehicle, the vehicle control system being enabled to execute computer programs, the vehicle control system being enabled to receive data signals, at least one sensor for sensing vehicle operator intent, the sensor being enabled for transmitting data signals to the vehicle control system, and a computer program for developing a response command in relation to a representation of vehicle operator intent, the representation further comprising received data signals.

Claims

1. A system for using vehicle operator intent to adjust a vehicle control system, comprising:

a vehicle;

at least one of the following vehicle control systems;

an anti-lock braking system, traction control system, stability control system, front-wheel steering system, rear-wheel steering system, or four-wheel steering system, said vehicle control system being associated with said vehicle, said vehicle control system being enabled to execute computer programs, said vehicle control system being enabled to receive data signals;

at least one sensor for sensing vehicle operator intent, said sensor being associated with said vehicle, said sensor being enabled for transmitting data signals to said vehicle control system; and

said vehicle control system developing a response command in relation to a representation of vehicle operator intent and at least one of the following;

longitudinal velocity, lateral velocity, handwheel velocity, yaw rate, or handwheel angle, said representation comprising said received data signals.

2. A system as in claim 1 wherein said vehicle control system includes open-loop feedforward and a closed-loop feedback.

3. A system as in claim 1 wherein said data signals further comprise at least one of the following propagated signals:

electrical signals, optical signals, or electromagnetic signals.

4. A system as in claim 1 wherein said sensor further comprises at least one of the following:

an optical sensor, a vehicle location sensor, a hand-wheel velocity sensor, a vehicle operator actuated switch, or a first device for communicating with a second device, said second device not being located in said vehicle.

5. A method for using vehicle operator intent to adjust a vehicle control system, comprising:

sensing vehicle operator intent, said intent being sensed using at least one sensor, said sensor being enabled for transmitting data signals to said vehicle control system;

generating a vehicle control system response command in relation to a representation of said intent and at least one of the following;

longitudinal velocity, lateral velocity, handwheel velocity, yaw rate, or handwheel angle vehicle operator intent, said representation comprising received data signals; and

using said response command for controlling at least one of the following vehicle control systems;

an anti-lock braking system, traction control system, stability control system, front-wheel steering system, rear-wheel steering system, or four-wheel steering system.

6. A method as in claim 5 wherein said vehicle control system includes open-loop feedforward and closed-loop feedback.

7. A method as in claim 5 wherein said sensor further comprises at least one of the following:

an optical sensor, a vehicle location sensor, a hand-wheel velocity sensor, a vehicle operator actuated switch, or a first device for communicating with a second device, said second device not being located in said vehicle.

8. A system for using vehicle operator intent to adjust a rear-wheel steering system, comprising:

a vehicle, said vehicle having a rear-wheel steering system, said rear-wheel steering system being enabled to execute computer programs, said rear-wheel steering system being enabled to receive data signals;

at least one sensor for sensing vehicle operator intent, said sensor being enabled for transmitting data signals to said rear-wheel steering system;

said rear-wheel steering system developing an open-loop steering command in relation to a representation of vehicle longitudinal velocity and in relation to a representation of vehicle hand-wheel angle, said hand-wheel angle and longitudinal velocity representations comprising received data signals;

said rear-wheel steering system developing a closed-loop steering command, further comprising;

(1) generating yaw and lateral velocity commands in relation to said open-loop steering command and representations of vehicle hand-wheel angle and said vehicle operator intent, said vehicle handwheel angle and said vehicle operator intent representations further comprising received data signals, (2) determining the actual yaw and longitudinal velocities of the vehicle, and (3) developing a closed-loop steering command in relation to the deviation of the actual yaw and lateral velocities from the commanded yaw and lateral velocities;

said rear-wheel steering system developing a steering command according to the open-loop and closed-loop steering commands; and

an actuator means for steering the rear-wheels of the vehicle in accordance with the steering command.

9. A system as in claim 8 wherein said data signals further comprise at least one of the following propagated signals:

electrical signals, optical signals, or electromagnetic signals.

10. A system as in claim 8 wherein said sensor further comprises at least one of the following:

an optical sensor, a vehicle location sensor, a hand-wheel velocity sensor, a vehicle operator actuated switch, or a first device for communicating with a second device, said second device not being located in said vehicle.

11. A method for using vehicle operator intent to adjust a rear-wheel steering system, comprising:

developing an open-loop steering command in relation to a representation of vehicle longitudinal velocity and in relation to a representation of vehicle hand-wheel angle, said hand-wheel angle and longitudinal velocity representations comprising received data signals;

developing a closed-loop steering command, further comprising;

(1) generating yaw and lateral velocity commands in relation to said open-loop steering command and representations of vehicle hand-wheel angle and vehicle operator intent, said vehicle hand-wheel angle and vehicle operator intent representations further comprising received data signals, (2) determining the actual yaw and longitudinal velocities of the vehicle, and (3) developing a closed-loop steering command in relation to the deviation of the actual yaw and lateral velocities from the commanded yaw and lateral velocities;

developing a steering command according to the open-loop and closed-loop steering commands; and

steering rear-wheels of the vehicle in accordance with the steering command.

12. A method as in claim 11 wherein said data signals further comprise at least one of the following propagated signals:

electrical signals, optical signals, or electromagnetic signals.

13. A method as in claim 11 wherein said sensor further comprises at least one of the following:

an optical sensor, a vehicle location sensor, a hand-wheel velocity sensor, a vehicle operator actuated switch, and a first device for communicating with a second device, said second device not being located in said vehicle.

14. An article of manufacture comprising:

a computer usable medium having computer readable program code embodied therein for using vehicle operator intent to adjust a vehicle control system, comprising;

computer readable program code for sensing vehicle operator intent, said intent being sensed using at least one sensor, said sensor being enabled for transmitting data signals to said vehicle control system, said vehicle control system comprising at least one of the following vehicle control systems;

an anti-lock braking system, traction control system, stability control system, front-wheel steering system, rear-wheel steering system, or four-wheel steering system, said system being associated with a vehicle; and

computer readable program code for generating a vehicle control system response command in relation to a representation of said intent and at least one of the following;

vehicle operator intent, longitudinal velocity, lateral velocity, handwheel velocity, yaw rate, or handwheel angle, said representation comprising said received data signals.

15. A computer data signal embodied in a carrier wave, the computer data signal comprising:

computer readable program code for sensing vehicle operator intent and for transmitting a data signal representation of said intent to a vehicle control system, said intent being sensed using at least one sensor, said vehicle control system comprising at least one of the following vehicle control systems;

an anti-lock braking system, traction control system, stability control system, front-wheel steering system, rear-wheel steering system, or four-wheel steering system; and

computer readable program code for generating a vehicle control system response command in relation to said representation of said vehicle operator intent and at least one of the following;

longitudinal velocity, lateral velocity, handwheel velocity, yaw rate, or handwheel angle, said representation comprising said received data signals, said representation comprising received data signals.