US 10,501,063 B2 · Brake-by-wire system

Abstract

A vehicle includes a plurality of brake assemblies and a plurality of electrical power circuits. Each brake assembly includes an electro-mechanical actuator configured to adjust a torque force applied to a wheel of the vehicle. The electrical power circuits are located remotely from one another. Each power circuit is configured to drive a respective actuator. The vehicle further includes a first electronic brake system (EBS) controller and a second EBS controller. The first EBS controller is configured to output a first data command signal to control a first group of power circuits among the plurality of power circuits. The second EBS controller is configured to output a second data command signal to control a second group of power circuits among the plurality of power circuits. The second group excludes the power circuits from the first group.

Claims10

Dependent claims

A vehicle including a fault tolerant electronic brake-by-wire (BBW) system, the vehicle comprising:

a plurality brake assemblies, each brake assembly including an electro-mechanical actuator configured to decelerate a respective wheel of the vehicle;
a plurality of electrical power circuits located remotely from one another, each power circuit being configured to drive a respective actuator;
and
a plurality of electronic brake system (EBS) controllers, each EBS controller among the plurality of EBS controller being in electrical communication with each power circuit among the plurality of power circuits,
wherein each electrical power circuit is in electrical communication with a respective actuator, and is configured to output a high-frequency switched high-power signal that drives the respective actuator, the high-frequency switched high-power signal having an upper frequency value that reaches 65 kilohertz and an upper current value that reaches 200 amps.

2 more elements

A method of controlling a fault tolerant electronic brake-by-wire (BBW) system, the method comprising:

detecting a brake request to brake at least one wheel of a vehicle;
outputting, via a first electronic brake system (EBS) controller, a first data command signal to control a first group of power circuits among a plurality of power circuits;
outputting, via a second EBS controller, a second data command signal to control a second group of power circuits among the plurality of power circuits, the second group excluding the power circuits from the first group;
outputting a first high-power drive signal from at least one power circuit included in the first group, and outputting a second high-power drive signal from at least one power circuit included in the second group, the first and second high-power drive signal each having an upper current value that reaches 200 amps;
controlling at least one actuator based on at least one of the first and second high-power drive signals so as to brake the at least one wheel according to the brake request;
and
selectively operating the first and second EBS controllers in a split topology mode and a full topology mode based on diagnostic results generated by at least one of the first and second EBS controllers, wherein in the split topology mode the first EBS controller controls only the first group of power circuits and the second EBS controller controls only the second group of power circuits, and in the full topology mode each of the first and second EBS controllers are configured to independently control both the first group of power circuits and the second group of power circuits.

4 more elements

Dependencies are inferred from the claim text.

Brake-by-wire system

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Brake-by-wire system

Life of this patent

Abstract

Claims10