SYSTEM AND METHOD FOR CONTROLLNG ACCELERATION TORQUE OF VEHICLE

• US 20160121891A1
• Filed: 08/31/2015
• Published: 05/05/2016
• Est. Priority Date: 10/30/2014
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Kim, Sang Joon, Yang, Dong Ho, Cho, Jae Hoon
• Application Number:
  US14/840,643
• Publication Number:
  US 20160121891A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60W 2510/1005 Transmission ratio engaged
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• CPC Class Codes: B60W 2554/801 Lateral distance
• CPC Class Codes: B60W 2554/804 Relative longitudinal speed
• CPC Class Codes: B60W 2710/105 Output torque
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/18 Propelling the vehicle

Abstract

A system for controlling acceleration torque of a vehicle includes: a driving information detection unit that detects driving information of the vehicle; a forward-vehicle detector that detects the information about another vehicle located substantially ahead of the vehicle; and a control unit that calculates a basic acceleration torque and a basic slew rate of the vehicle when the vehicle is accelerating based on the detected driving information, calculates a desired acceleration torque and a final slew rate by correcting the basic acceleration torque and the basic slew rate based on the detected information about the other vehicle, and outputs a torque-related order to adjust a torque output from a power system of the vehicle to the desired acceleration torque in accordance with the final slew rate.

Claims

1. A system for controlling acceleration torque of a vehicle, comprising:

a driving information detection unit that detects driving information of the vehicle;

a forward-vehicle detector that detects information about another vehicle located substantially ahead of the vehicle; and

a control unit that calculates a basic acceleration torque and a basic slew rate of the vehicle when the vehicle is accelerating based on the detected driving information, calculates a desired acceleration torque and a final slew rate by correcting the basic acceleration torque and the basic slew rate based on the detected information about the other vehicle, and outputs a torque-related order to adjust a torque output from a power system of the vehicle to the desired acceleration torque in accordance with the final slew rate.

2. The system of claim 1, wherein the driving information detection unit includes:

a vehicle speed detector that detects a vehicle speed of the vehicle; and

an accelerator pedal position detection unit that detects an accelerator pedal position of the vehicle,

wherein the control unit calculates the basic acceleration torque based on the vehicle speed and the accelerator pedal position using a torque map.

3. The system of claim 1, further comprising:

a slope detector disposed in the vehicle that detects a road slope,

wherein the control unit corrects the basic acceleration torque and the basic slew rate based on the detected information about the other vehicle and the detected road slope.

4. The system of claim 1, wherein the information about the other vehicle includes one or more of an inter-vehicle distance between the vehicle and the other vehicle and a relative speed of the vehicle with respect to the other vehicle.

5. A method of controlling acceleration torque of a vehicle, comprising:

detecting driving information of the vehicle;

detecting information about another vehicle located substantially ahead of the vehicle;

calculating a basic acceleration torque and a basic slew rate based on the detected driving information;

calculating a desired acceleration torque and a final slew rate by correcting the basic acceleration torque and the basic slew rate based on the detected information about the other vehicle; and

outputting a torque-related order to adjust a torque output from a power system of the vehicle to the desired acceleration torque in accordance with the final slew rate.

6. The method of claim 5, wherein the detecting of the driving information of the vehicle comprises:

detecting a vehicle speed of the vehicle; and

detecting an accelerator pedal position of the vehicle,

wherein the basic acceleration torque is calculated based on the vehicle speed and the acceleration pedal position using a torque map.

7. The method of claim 5, further comprising:

detecting a road slope,

wherein the basic acceleration torque and the basic slew rate are corrected based on the detected information about the other vehicle and the detected road slope.

8. The method of claim 7, further comprising:

calculating the desired acceleration torque according to the detected road slope and a torque map; and

calculating the final slew rate according to the detected road slope and a slew rate map.

9. The method of claim 8, wherein:

the torque map is set such that a larger road slope corresponds to a larger desired acceleration torque, and

the slew rate map is set such that a larger road slope corresponds to a larger final slew rate.

10. The method of claim 5, further comprising:

calculating the desired acceleration torque according to a torque map.

11. The method of claim 5, further comprising:

calculating the final slew rate according to a slew rate map.

12. The method of claim 5, wherein the information about the other vehicle includes one or more of an inter-vehicle distance between the vehicle and the other vehicle and a relative speed of the vehicle with respect to the other vehicle.

13. The method of claim 12, further comprising:

calculating the desired acceleration torque according to a torque map,

wherein the torque map is set such that a larger road slope corresponds to a larger desired acceleration torque.

14. The method of claim 12, further comprising:

calculating the final slew rate according to a slew rate map,

the slew rate map is set such that a larger road slope corresponds to a larger final slew rate.

15. A non-transitory computer readable medium containing program instructions for controlling acceleration torque of a vehicle, the computer readable medium comprising:

program instructions that calculate a basic acceleration torque and a basic slew rate based on detected driving information of the vehicle;

program instructions that calculate a desired acceleration torque and a final slew rate by correcting the basic acceleration torque and the basic slew rate based on detected information about another vehicle located substantially ahead of the vehicle; and

program instructions that output a torque-related order to adjust a torque output from a power system of the vehicle to the desired acceleration torque in accordance with the final slew rate.