ELECTROMECHANICAL BRAKE SYSTEM WITH DISTRIBUTED ARCHITECTURE

• US 20090278401A1
• Filed: 05/04/2009
• Published: 11/12/2009
• Est. Priority Date: 05/05/2008
• 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: Erickson, Staffan, Clary, Thom, Klode, Harald, Summers, Paul L.
• Granted Patent: US 8,550,572 B2
• Time in Patent Office: Days
• US Class Current: 303/20
• CPC Class Codes: B60T 13/741 acting on an ultimate actuator
• CPC Class Codes: B60T 17/22 Devices for monitoring or checking brake systems; Signal devices

Abstract

A brake system of a vehicle includes a plurality of electromechanical brake actuators (EBAs) proximate the wheels of the vehicle. Each EBA includes a power device for effectuating braking of an associated wheel, and electronics to generate a drive signal for the power device. The brake system may further include at least one brake control unit (BCU) for converting a brake command signal into a control signal for each EBA. The electronics for each EBA may be configured to convert the corresponding control signal into the drive signal that is applied to the power device to cause movement of the power device and effectuate braking of the vehicle.

Claims

1. A brake system, comprising:

a first electromechanical brake actuator (EBA) proximate a first wheel, the first EBA including a first power device configured to effectuate braking of the first wheel, and first electronics to generate a first drive signal for the first power device; and

a first brake control unit (BCU) for converting a brake command signal into a first EBA control signal for the first EBA;

wherein the first electronics in the first EBA are configured to convert the first EBA control signal into the first drive signal that is applied to the first power device to effectuate the braking of the first wheel.

2. The brake system of claim 1, wherein the first EBA is configured to communicate with the first BCU through a remote data concentrator (RDC).

3. The brake system of claim 1, wherein the first EBA is configured to communicate over a direct network interface with the first BCU.

4. The brake system of claim 1, wherein the first BCU and the first EBA communicate absent an intermediate controller.

5. The brake system of claim 1, wherein the first EBA control signal is individualized for controlling the first EBA.

6. The brake system of claim 1, wherein the first EBA is configured to receive first drive power used to generate the first drive signal from a power bus associated with the first EBA, wherein a single pair of conductors from the power bus is configured to facilitate delivering the first drive power to the first EBA and second drive power to a second EBA.

7. The brake system of claim 1, wherein the first electronics include first EBA control electronics and first EBA drive electronics for the first power device.

8. The brake system of claim 7, wherein the first EBA control electronics are configured to communicate with second EBA control electronics of a second EBA to coordinate braking.

9. The brake system of claim 1, wherein the first EBA includes a sensor interface to receive sensor data from an associated sensor.

10. The brake system of claim 9, wherein the first EBA is configured to transmit the sensor data to the first BCU.

11. The brake system of claim 10, wherein the first EBA is configured to concentrate sensor data from a plurality of sensors for transmission to the first BCU.

12. The brake system of claim 11, wherein the first EBA is configured to concentrate the sensor data with data regarding operation of the first EBA for transmission to the first BCU.

13. The brake system of claim 12, wherein the sensor data is configured to be transmitted to the first BCU through an RDC.

14. The brake system of claim 13, wherein first EBA is configured to communicate wirelessly with at least one of the first BCU, the RDC, and the associated sensor.

15. The brake system of claim 1, further comprising:

a second EBA proximate a second wheel of the aircraft, the second EBA including a second power device configured to effectuate braking of the second wheel, and second electronics to generate a second drive signal for the second power device; and

a second BCU for converting the brake command signal into a second EBA control signal for the second EBA;

wherein the second electronics in the second EBA are configured to convert the second EBA control signal into the second drive signal that is applied to the second power device to effectuate the braking of the second wheel.

16. The brake system of claim 15, further comprising a third EBA proximate the first wheel to facilitate the braking of the first wheel, wherein the third EBA is configured to receive a third EBA control signal from both the first BCU and the second BCU to facilitate the braking of the first wheel, and wherein the second EBA is configured to receive the second EBA control signal from both the first BCU and the second BCU.

17. The brake system of claim 16, wherein the first EBA is configured to communicate with the first BCU, the second BCU, the second EBA, and the third EBA, wherein the second EBA is configured to communicate with the first BCU, the second BCU, the first EBA, and the third EBA, and wherein the third EBA is configured to communicate with the first BCU, the second BCU, the first EBA, and the second EBA.

18. The brake system of claim 1, wherein the first EBA is configured to receive power from a bus in a signal that is not modulated, and wherein the first drive signal generated by the first electronics in the first EBA is modulated.

19. An electromechanical brake actuator (EBA) comprising:

a power device configured to effectuate braking of a wheel, wherein the EBA is disposed proximate the wheel;

electronics configured to generate a drive signal for the power device; and

a communications interface configured to receive an EBA control signal from a brake control unit (BCU), wherein the BCU is configured to convert a brake command signal into the EBA control signal;

wherein the electronics are configured to convert the EBA control signal into the drive signal that is applied to the power device to effectuate the braking of the wheel.

20. A brake control unit (BCU) comprising:

electronics for converting a brake command signal into an electromechanical brake actuator (EBA) control signal; and

a communications interface configured to transmit the EBA control signal to an EBA disposed proximate a wheel, wherein EBA electronics are configured to convert the EBA control signal into a drive signal that is configured to be applied to a power device associated with the EBA to effectuate braking of the wheel.