Apparatus, method and computer readable storage medium for updating pre-stored setting value for controlling boost power of electric booster

1. An apparatus for updating a pre-stored setting value for controlling boost power of an electric booster, the apparatus comprising:

a control unit including a processor; and

a storage medium recording one or more programs configured to be executable by the processor;

a measuring unit configured for measuring braking characteristics including pedal stroke, deceleration, and hydraulic pressure applied from the electric booster to a braking unit during braking through a braking test of a vehicle, and

wherein the control unit is configured for updating the pre-stored setting value so that the deceleration includes desired target deceleration based on the measured braking characteristics,

wherein the pre-stored setting value is proportional to the pedal stroke, and is a value for setting a magnitude of the hydraulic pressure.

2. The apparatus of claim 1 , wherein the control unit is further configured to extract a first correlation between the pedal stroke and the deceleration and a second correlation between the hydraulic pressure and the deceleration.

3. The apparatus of claim 2 , wherein the control unit is further configured to update the pre-stored setting value based on the first correlation and the second correlation.

4. The apparatus of claim 2 ,

wherein the control unit is further configured to obtain a difference in deceleration between deceleration and target deceleration at an arbitrary pedal stroke from the first correlation,

wherein the control unit is further configured to obtain a difference in hydraulic pressure corresponding to the difference in deceleration from the second correlation, and

wherein the control unit is further configured to update the pre-stored setting value by adding the difference in hydraulic pressure to a magnitude of hydraulic pressure corresponding to the arbitrary pedal stroke.

5. The apparatus of claim 4 , wherein the control unit is further configured to update the pre-stored setting value for all pedal strokes.

6. The apparatus of claim 2 ,

wherein the pedal stroke and the deceleration include a proportional relationship in the first correlation, and

wherein the hydraulic pressure and the deceleration include a proportional relationship in the second correlation.

7. The apparatus of claim 1 ,

wherein the measuring unit is further configured to measure a pedal effort during the braking through the braking test of the vehicle, and

wherein the control unit is further configured to extract a third correlation between the pedal effect and the deceleration, a fourth correlation between the hydraulic pressure and the deceleration, and a fifth correlation between the pedal stroke and the pedal effort.

8. The apparatus of claim 7 , wherein the control unit is further configured to update the pre-stored setting value based on the third correlation, the fourth correlation, and the fifth correlation.

9. The apparatus of claim 7 , wherein the control unit is further configured for:

obtaining a difference in deceleration between deceleration and target deceleration at an arbitrary pedal effort from the third correlation,

obtaining a difference in hydraulic pressure corresponding to the difference in deceleration from the fourth correlation,

obtaining a pedal stroke corresponding to the arbitrary pedal effort from the fifth correlation; and

updating the pre-stored setting value by adding the difference in hydraulic pressure to a magnitude of hydraulic pressure corresponding to the pedal stroke.

10. The apparatus of claim 9 , wherein the control unit is further configured to update the pre-stored setting value for all pedal strokes.

11. The apparatus of claim 7 ,

wherein the pedal effort and the deceleration include a proportional relationship in the third correlation,

wherein the hydraulic pressure and the deceleration include a proportional relationship in the fourth correlation, and

wherein the pedal effort and the pedal stroke include a quadratic function relationship in which a slope thereof decreases in the fifth correlation.

12. A method for updating a pre-stored setting value for controlling boost power of an electric booster, the method comprising:

measuring braking characteristics including pedal stroke, deceleration, and hydraulic pressure applied from the electric booster to a braking unit during braking through a braking test of a vehicle; and

updating the pre-stored setting value so that the deceleration includes desired target deceleration based on the measured braking characteristics,

wherein the pre-stored setting value is proportional to the pedal stroke, and is a value for setting a magnitude of the hydraulic pressure.

13. The method of claim 12 , wherein the updating includes extracting a first correlation between the pedal stroke and the deceleration and a second correlation between the hydraulic pressure and the deceleration.

14. The method of claim 13 , wherein the updating further includes:

obtaining a difference in deceleration between deceleration and target deceleration at an arbitrary pedal stroke from the first correlation;

obtaining a difference in hydraulic pressure corresponding to the difference in deceleration from the second correlation; and

updating the pre-stored setting value by adding the difference in hydraulic pressure to a magnitude of hydraulic pressure corresponding to the arbitrary pedal stroke.

15. The method of claim 14 , wherein in the updating, the pre-stored setting value are updated for all pedal strokes.

16. The method of claim 13 ,

wherein in the first correlation, the pedal stroke and the deceleration include a proportional relationship, and

wherein in the second correlation, the hydraulic pressure and the deceleration include a proportional relationship.

17. The method of claim 12 ,

Wherein the measuring further includes measuring a pedal effort during the braking through the braking test of the vehicle, and

wherein the updating further includes extracting a third correlation between the pedal effort and the deceleration, a fourth correlation between the hydraulic pressure and the deceleration, and a fifth correlation between the pedal stroke and the pedal effort.

18. The method of claim 17 , wherein the updating further includes:

obtaining a difference in deceleration between deceleration and target deceleration at an arbitrary pedal effort from the third correlation;

obtaining a difference in hydraulic pressure corresponding to the difference in deceleration from the fourth correlation;

obtaining a pedal stroke corresponding to the arbitrary pedal effort from the fifth correlation; and

updating the pre-stored setting value by adding the difference in hydraulic pressure to a magnitude of hydraulic pressure corresponding to the pedal stroke.

19. The method of claim 17 ,

wherein in the third correlation, the pedal effort and the deceleration include a proportional relationship,

wherein in the fourth correlation, the hydraulic pressure and the deceleration include a proportional relationship, and

wherein in the fifth correlation, the pedal effort and the pedal stroke include a quadratic function relationship in which a slope thereof decreases.

20. A computer-readable storage medium in which a program for executing the method of claim 12 on a computer is recorded.