Smart adaptive cruise control

• US 9,180,890 B2
• Filed: 02/27/2012
• Issued: 11/10/2015
• Est. Priority Date: 02/27/2012
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Lu, Jianbo, Prakah-Asante, Kwaku O., Filev, Dimitar Petrov
• Primary Examiner(s): Badii, Behrang
• Assistant Examiner(s): GREENE, DANIEL LAWSON
• Application Number:
  US13/405,512
• Publication Number:
  US 20130226431A1
• Time in Patent Office: 1,352 Days
• Field of Search: 701/96
• US Class Current: 1/1
• CPC Class Codes: B60W 2050/0075 Automatic parameter input, automatic initialising or calibrating means
• CPC Class Codes: B60W 2050/0083 Setting, resetting, calibration
• CPC Class Codes: B60W 2554/80 Spatial relation or speed relative to objects
• CPC Class Codes: B60W 2554/802 Longitudinal distance
• CPC Class Codes: B60W 2555/60 Traffic rules, e.g. speed limits or right of way
• CPC Class Codes: B60W 2556/45 External transmission of data to or from the vehicle
• CPC Class Codes: B60W 2754/30 Longitudinal distance
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: B60W 50/0098 Details of control systems ensuring comfort, safety or stability not otherwise provided for

Abstract

A cruise control system of a vehicle comprises a target generator, a speed controller, and a distance controller. The speed controller and the distance controller are each coupled to the target generator. The target generator is configured for generating a dynamic speed target and a dynamic distance target through real-time assessment of information characterizing current operating condition characterizing information. The speed controller is configured for utilizing the dynamic speed target for issuing commands to cause the vehicle to be operated at a road speed that is adaptive to the current operating condition characterizing information. The distance controller is configured for utilizing the dynamic distance target for issuing commands to cause the vehicle to be operated such that a distance between the vehicle and a leading vehicle is adaptive to the current operating condition characterizing information.

Claims

1. A method for controlling a cruise control system of a vehicle, the method carried out by an electronic control system on the vehicle, the electronic control system associated with the cruise control system and having a set of instructions readable by at least one data processing device configured to carry out instructions for controlling the cruise control system, the method comprising the steps of:

assessing information, received by the electronic control system, representative of road surface conditions of a road over which the vehicle is travelling, ambient climate conditions at a current geographical position of the vehicle, a driving style of a current driver of the vehicle, the driving style being identified in real time while the current driver is driving, as cautious, normal, expert, reckless, or impatient, a geometry of a road over which the vehicle is travelling, a type of road over which the vehicle is travelling, and fuel economy requirements of the vehicle to define current operation condition characterizing information of the vehicle;

determining a first dynamic control target in a real-time manner as a function of current operating condition characterizing information of the vehicle such that the first dynamic control target is adaptive to the current operating condition characterizing information;

and

controlling the cruise control system of the vehicle as a function of the first dynamic control target.

2. The method of claim 1 wherein determining the first dynamic control target includes assessing information provided by at least one of a traction control system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.

3. The method of claim 1 wherein controlling the cruise control system further comprises the steps of:

comparing a driver specified cruise control target to the first dynamic control target for determining a preferred cruise control target; and

transitioning the cruise control system from issuing commands as a function of the driver specified cruise control target to issuing commands as a function of the first dynamic control target in response to determining that the first dynamic control target is the preferred cruise control target.

4. The method of claim 3 wherein determining the dynamic control target includes assessing information provided by at least one of a traction controlling system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.

5. The method of claim 1 wherein controlling the cruise control system further comprises the steps of:

issuing commands for causing the vehicle to be operated at a road speed that is adaptive to the current operating condition characterizing information;

issuing commands for causing the vehicle to be operated such that a distance between the vehicle and a leading vehicle is adaptive to the current operating condition characterizing information; and

arbitrating between commands issued for speed control functionality and commands issued for distance control functionality.

6. The method of claim 5 wherein determining the dynamic control target includes assessing information provided by at least one of a traction control system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.

7. The method of claim 1 further comprising the steps of:

determining a second dynamic control target in a real-time manner as a function of the current operating condition characterizing information such that the second dynamic control target is adaptive to the current operating condition characterizing information;

controlling the cruise control system of the vehicle using the second dynamic control target; and

determining a first type of vehicle operating condition during which the cruise control system is to be controlled using the first dynamic control target and a second type of vehicle operating condition during which the cruise control system is to be controlled using the second dynamic control target.

8. The method of claim 7 wherein:

the first dynamic control target is a dynamic speed target;

the second dynamic control target is a dynamic distance target; and

controlling the cruise control system using the dynamic speed target further comprises operating the vehicle at a road speed that is adaptive to the current operating condition characterizing information; and

controlling the cruise control system using the dynamic distance target operating the vehicle such that a distance between the vehicle and a leading vehicle is adaptive to the current operating condition characterizing information.

9. The method of claim 8 wherein determining the dynamic control target includes assessing information provided by at least one of a traction control system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.

10. An electronic control system having a set of instructions configured to carry out operations for:

at least one data processing device accessing, from memory coupled to the at least one data processing device, instructions causing the at least one data processing device to assess information characterizing a road surface condition of a road over which the vehicle is travelling, ambient climate conditions at a current geographical position of the vehicle, a driving style of a current driver of the vehicle identified in real time while the current driver is driving as cautious, normal, expert, reckless, or impatient, a geometry of a road over which the vehicle is travelling, a type of road over which the vehicle is travelling, and fuel economy requirements of the vehicle;

the at least one data processing device accessing, from memory coupled to the at least one data processing device, instructions causing the at least one data processing device to determine a dynamic speed target for the vehicle, wherein the dynamic speed target is determined in a real-time manner as a function of current operating condition characterizing information;

the at least one data processing device accessing, from the memory, instructions causing the at least one data processing device to determine a dynamic distance target for the vehicle relative to a leading vehicle that the vehicle is following, wherein the dynamic distance target is determined in a real-time manner as a function of current operating condition characterizing information;

the at least one data processing device accessing from memory, instruction causing the at least one data processing device to asses information characterizing at least one of a road surface condition of a road over which the vehicle is travelling, ambient climate conditions at a current geographical position of the vehicle, a driving style of a current driver of the vehicle, a geometry of a road over which the vehicle is travelling, a type of road over which the vehicle is travelling, and fuel economy requirements of the vehicle;

the at least one data processing device accessing, from the memory, instructions causing the at least one data processing device to selectively detect a vehicle operating condition during which a cruise control system of the vehicle is to be controlled using the dynamic speed target and a vehicle operating condition during which the cruise control system is to be controlled using the dynamic distance target; and

the at least one data processing device accessing, from the memory, instructions causing the at least one data processing device to activate dynamic speed control functionality of the cruise control system in response to detecting the vehicle operating condition during which the cruise control system of the vehicle is to be controlled using the dynamic speed target and to activate dynamic distance control functionality of the cruise control system in response to detecting the vehicle operating condition during which the cruise control system of the vehicle is to be controlled using the dynamic distance target.

11. The system of claim 10 wherein at least one of instructions causing the at least one data processing device to determine the dynamic speed target and instructions causing the at least one data processing device to determine the dynamic distance target includes instructions causing the at least one data processing device to assess information provided by at least one of a traction control system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.

12. The system of claim 10 wherein:

the dynamic speed control functionality includes instructions comparing a driver specified speed target to the dynamic speed target to determine a preferred speed target and instructions to transition the cruise control system from issuing commands as a function of the driver specified speed target to issuing commands as a function of the dynamic speed target in response to determining that the dynamic speed target is the preferred speed target; and

the dynamic distance control functionality includes instructions comparing a driver specified distance target to the dynamic distance target to determine a preferred distance target and instructions to transition the cruise control system from issuing commands as a function of the driver specified distance target to issuing commands as a function of the dynamic distance target in response to determining that the dynamic distance target is the preferred distance target.

13. The system of claim 10 wherein:

the dynamic speed control functionality includes issuing commands causing the vehicle to be operated at a road speed that is adaptive to the current operating condition characterizing information; and

the dynamic distance control functionality includes issuing commands causing the vehicle to be operated such that a distance between the vehicle and a leading vehicle is adaptive to the current operating condition characterizing information.

14. A cruise control system of a vehicle, comprising:

a target generator generating a dynamic speed target and a dynamic distance target through real-time assessment of information characterizing current operating condition of a road surface condition of a road over which the vehicle is travelling, ambient climate conditions at a current geographical position of the vehicle, a driving style of a current driver of the vehicle identified in real time while the current driver is driving as cautious, normal, expert, reckless, or impatient, a type of road over which the vehicle is travelling, and fuel economy requirements of a vehicle;

a speed controller coupled to the target generator, wherein the speed controller utilizes the dynamic speed target to issue commands to cause the vehicle to be operated at a road speed that is adaptive to the current operating condition characterizing information; and

a distance controller coupled to the target generator, wherein the distance controller utilizes the dynamic distance target to issue commands to cause the vehicle to be operated such that a distance between the vehicle and a leading vehicle is adaptive to the current operating condition characterizing information.

15. The cruise control system of claim 14 wherein the information characterizing the current operating condition characterizing information includes information provided by at least one of a traction control system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.

16. The cruise control system of claim 14 wherein:

utilizing the dynamic speed target to issue commands to cause the vehicle to be operated at a road speed that is adaptive to the current operating condition characterizing information includes comparing a driver specified speed target to the dynamic speed target to determine a preferred speed target and transitioning the cruise control system from issuing commands as a function of the driver specified speed target to issuing commands as a function of the dynamic speed target in response to determining that the dynamic speed target is the preferred speed target; and

utilizing the dynamic distance target to cause the vehicle to be operated at a road speed that is adaptive to the current operating condition characterizing information includes comparing a driver specified distance target to the dynamic distance target for determining a preferred distance target and transitioning the cruise control system from issuing commands as a function of the driver specified distance target to issuing commands as a function of the dynamic distance target in response to determining that the dynamic distance target is the preferred distance target.

17. The cruise control system of claim 16 wherein the information characterizing the current operating condition characterizing information includes information provided by at least one of a traction control system of the vehicle, a stability control system of the vehicle, a brake control system of the vehicle, a global positioning system of the vehicle, and a fuel economy managing system of the vehicle.