Apparatus, method and computer readable storage medium for computing torque of electric vehicle for exiting drift driving

1. An apparatus for calculating torque of a vehicle for exiting drift driving, the apparatus comprising:

a processor;

a non-transitory computer-readable storage medium storing a program which, when executed by the processor, causes the processor to perform:

determining a driver's intention to exit drift driving based on an opening degree of an accelerator pedal and a steering angle, and

calculating target torque of a front wheel motor based on the opening degree of the accelerator pedal when the intention to exit drift driving is determined; and

a motor controller for driving the front wheel motor according to the calculated target torque.

2. The apparatus for calculating torque of a vehicle of claim 1 , wherein the non-transitory computer-readable medium stores the program which, when executed by the processor, further causes the processor to perform: determining that there is an intention to exit drift driving, when the steering angle is less than a first reference steering angle and the opening degree of the accelerator pedal is greater than a first reference opening degree.

3. The apparatus for calculating torque of a vehicle of claim 1 , wherein the non-transitory computer-readable medium stores the program which, when executed by the processor, further causes the processor to perform:

counting a time at which the steering angle is less than a first reference steering angle, and the opening degree of the accelerator pedal is greater than a first reference opening degree and cumulate the same, and

when a cumulative count value is greater than or equal to a preset first cumulative count value, determining that there is an intention to exit drift driving.

4. The apparatus for calculating torque of a vehicle of claim 3 , wherein the non-transitory computer-readable medium stores the program which, when executed by the processor, further causes the processor to perform:

counting a time at which the steering angle is less than a first reference steering angle and the opening degree of the accelerator pedal is greater than a reference opening degree, and

when the steering angle is greater than a second reference steering angle, the second reference steering angle being greater than the first reference steering angle, resetting the cumulative count value.

5. The apparatus for calculating torque of a vehicle of claim 3 , wherein the non-transitory computer-readable medium stores the program which, when executed by the processor, further causes the processor to perform: calculating the target torque by multiplying required torque according to the opening degree of the accelerator pedal by a sensitivity factor according to the opening degree of the accelerator pedal,

wherein the sensitivity factor is a factor for changing a magnitude of the required torque according to the opening degree of the accelerator pedal.

6. The apparatus for calculating torque of a vehicle of claim 5 , wherein the non-transitory computer-readable medium stores the program which, when executed by the processor, further causes the processor to perform: calculating target torque according to a cumulative count value by multiplying the calculated target torque by a weight factor according to the cumulative count value,

wherein the weight factor according to the cumulative count value has a value, proportional to the cumulative count value so as to reach the target torque at a point in time at which the cumulative count value becomes a second cumulative count value, greater than the first cumulative count value.

7. The apparatus for calculating torque of a vehicle of claim 5 , wherein the required torque according to the opening degree of the accelerator pedal is torque having a preset value distributed to the front wheel motor among total required torque according to the opening degree of the accelerator pedal.

8. The apparatus for calculating torque of a vehicle of claim 6 , wherein the sensitivity factor according to the opening degree of the accelerator pedal and the weight factor according to the cumulative count value are implemented in a form of a linear function.

9. A method of calculating torque of a vehicle for exiting drift driving, the method comprising:

a first operation determining a driver's intention to exit drift driving based on an opening degree of an accelerator pedal and a steering angle;

a second operation calculating target torque of a front wheel motor based on the opening degree of the accelerator pedal, when the driver's intention to exit drift driving is determined; and

a third operation of driving the front wheel motor according to the calculated target torque, performed by a motor controller.

10. The method of calculating torque of a vehicle of claim 9 , wherein the first operation comprises an operation of determining that there is an intention to exit drift driving when the steering angle is less than a first reference steering angle and the opening degree of the accelerator pedal is greater than a first reference opening degree.

11. The method of calculating torque of a vehicle of claim 9 , wherein the first operation comprises an operation of counting a time at which the steering angle is less than a first reference steering angle and the opening degree of the accelerator pedal is greater than a first reference opening degree and cumulating the same, and

determining that there is an intention to exit drift driving when a cumulative count value is greater than or equal to a preset first cumulative count value.

12. The method of calculating torque of a vehicle of claim 11 , wherein the second operation comprises an operation of counting a time at which the steering angle is less than a first reference steering angle and the opening degree of the accelerator pedal is greater than a reference opening degree, and

resetting the cumulative count value, when the steering angle is greater than a second reference steering angle, the second reference steering angle being greater than the first reference steering angle.

13. The method of calculating torque of a vehicle of claim 11 , wherein the second operation comprises an operation of calculating the target torque by multiplying required torque according to the opening degree of the accelerator pedal by a sensitivity factor according to the opening degree of the accelerator pedal,

wherein the sensitivity factor is a factor for changing a magnitude of the required torque according to the opening degree of the accelerator pedal.

14. The method of calculating torque of a vehicle of claim 13 , wherein the second operation comprises an operation of calculating target torque according to a cumulative count value by multiplying the calculated target torque by a weight factor according to the cumulative count value,

wherein the weight factor according to the cumulative count value has a value, proportional to the cumulative count value to reach the target torque at a point in time at which the cumulative count value is a second cumulative count value, greater than the first cumulative count value.

15. The method of calculating torque of a vehicle of claim 13 , wherein the required torque according to the opening degree of the accelerator pedal is torque having a preset value distributed to the front wheel motor among total required torque according to the opening degree of the accelerator pedal.

16. The method of calculating torque of a vehicle of claim 14 , wherein the sensitivity factor according to the opening degree of the accelerator pedal and the weight factor according to the cumulative count value are implemented in a form of a linear function.

17. A non-transitory computer-readable storage medium storing a program which, when executed by a processor, causes the processor to perform the method according to claim 9 .