Systems and methods for adaptive deceleration

• US 8,423,256 B2
• Filed: 12/23/2009
• Issued: 04/16/2013
• Est. Priority Date: 12/23/2009
• Status: Active Grant

• Current Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Cahill, Eric D.
• Primary Examiner(s): FREJD, RUSSELL WARREN
• Application Number:
  US12/646,475
• Publication Number:
  US 20110153176A1
• Time in Patent Office: 1,210 Days
• Field of Search: 701/70, 303/121, 303/126
• US Class Current: 701/70
• CPC Class Codes: B60T 2201/03 Brake assistants
• CPC Class Codes: B60T 8/1703 for aircrafts
• CPC Class Codes: B60T 8/325 Systems specially adapted for aircraft
• CPC Class Codes: B60T 8/3255 Systems in which the braking action is dependent on brake pedal data
• CPC Class Codes: B64C 25/426 Braking devices providing an automatic sequence of braking
• CPC Class Codes: B64C 25/44 Actuating mechanisms

Abstract

Systems and methods for adaptive deceleration are disclosed. A brake system controller may perform a method comprising receiving a pedal deflection signal comprising a pedal deflection level, determining a present level of deceleration, and mapping the pedal deflection level to a desired level of deceleration, wherein the desired level of deceleration is greater than the present level of deceleration.

Claims

1. A method comprising:

receiving, at a brake system controller, a pedal deflection signal comprising a pedal deflection level;

determining, at the brake system controller, a present level of deceleration;

mapping, at the brake system controller, the pedal deflection level to a desired level of deceleration,

wherein the desired level of deceleration is greater than the present level of deceleration.

2. The method of claim 1, further comprising commanding, from the brake system controller, a level of braking from a brake sufficient to achieve the desired level of deceleration.

3. The method of claim 2, wherein the mapping further comprises determining, at the brake system controller, if the present level of deceleration comprises a negative value.

4. The method of claim 3, wherein the mapping comprises a first linear relationship between the pedal deflection level and the desired level of deceleration in response to the pedal deflection level being between 0% and 80%.

5. The method of claim 4, wherein the mapping comprises a second linear relationship between the pedal deflection level and the desired level of deceleration when the pedal deflection level is between 80% and 100%.

6. The method of claim 5, wherein a slope of the first linear relationship is less than a slope of the second linear relationship.

7. The method of claim 3, wherein said mapping further comprises resetting the value of the present level of deceleration to 0, when the present level of deceleration comprises a negative value.

8. A system comprising:

a brake system controller, in electrical communication with a deceleration detection system; and

a pedal deflection detection system in electrical communication with the brake system controller,

wherein the pedal deflection detection system generates a pedal deflection signal responsive to deflection of a pedal,

wherein the deceleration detection system generates a present deceleration signal corresponding to a deceleration of an aircraft;

wherein the brake system controller receives the pedal deflection signal and the present deceleration signal,

wherein the brake system controller determines a desired level of deceleration based upon the pedal deflection signal and the present deceleration signal,

wherein the desired level of deceleration has a value greater than the value of the present deceleration signal.

9. The system of claim 8, wherein the brake system controller commands an aircraft brake to apply a level of braking sufficient to achieve the desired level of deceleration.

10. The system of claim 8, wherein the brake system controller determines if the present deceleration signal comprises a negative value.

11. The system of claim 10, wherein the brake system controller resets the value of the present deceleration signal to 0, in response to the present deceleration signal comprising a negative value.

12. The system of claim 8, wherein the brake system controller applies a first linear relationship between the pedal deflection signal and the desired level of deceleration, in response to the desired brake signal being between 0% and 80%.

13. The system of claim 8, wherein the brake system controller applies a second linear relationship between the pedal deflection signal and the desired level of deceleration, in response to the desired brake signal being between 80% and 100%.

14. An article of manufacture including a non-transitory computer readable medium having instructions stored thereon that, if executed by a computing device, cause the computing device to perform a method comprising:

receiving, at a brake system controller, a pedal deflection signal comprising a pedal deflection level;

determining, at the brake system controller, a present level of deceleration; and

mapping, at the brake system controller, the pedal deflection level to a desired level of deceleration,

wherein the desired level of deceleration is greater than the present level of deceleration.

15. The article of manufacture of claim 14, further comprising commanding, from the brake system controller, a level of braking from a brake sufficient to achieve the desired level of deceleration.

16. The article of manufacture of claim 14, wherein the mapping further comprises determining, at the brake system controller, if the present level of deceleration comprises a negative value.

17. The article of manufacture of claim 14, wherein the mapping further comprises a first linear relationship between the pedal deflection level and the desired level of deceleration in response to the pedal deflection level being between 0% and 80%.

18. The article of manufacture of claim 14, wherein the mapping further comprises a second linear relationship between the pedal deflection level and the desired level of deceleration, in response to the pedal deflection level being between 80% and 100%.

19. The article of manufacture of claim 14, further comprising a slope of the first linear relationship less than a slope of the second linear relationship.

20. The article of manufacture of claim 14, wherein the mapping further comprises resetting the value of the present level of deceleration to 0 in response to the present level of deceleration comprising a negative value.