Patent ID: 11872970
Assignee: SAFRAN LANDING SYSTEMS
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. An aircraft braking system comprising:
a brake configured to brake a wheel of an aircraft, the brake comprising friction members, a first electromechanical actuator, and a second electromechanical actuator, the first electromechanical actuator and the second electromechanical actuator respectively comprising a first electric motor and a second electric motor and configured to apply a braking force to the friction members;
principal control electrical circuitry configured to receive a principle baking command, to detect a fault, to output a state signal indicating a state of the principal control electrical circuitry, and to generate a principle braking control signal for servocontrol of the braking force based on a direct measurement of the braking force, or based on monitoring the first electromechanical actuator and the second electromechanical actuator;
alternative control electric circuitry that is at least partially different from the principal control electrical circuitry and is configured to generate an alternative braking control signal for a simplified servocontrol to only ensure that the braking force is between a low level that enables a minimum braking performance and a high level that guarantees the wheel does not lock up;
first power circuitry configured to generate, based on the principle braking control signal, at least one first electrical power supply current for supplying power to the first electric motor and at least one second electrical power supply current for supplying power to the second electric motor;
second power circuitry that is at least partly different from the first power circuitry and configured to generate, based on the alternative braking control signal, the at least one first electrical power supply current and the at least one second electrical power supply current; and
surveillance electrical circuitry configured to receive the state signal, the principle braking control signal, and the alternative braking control signal and configured to, in a normal operation, output the principle braking control signal to the first power circuitry to generate the at least one first electrical power supply current and the at least one second electrical power supply current to perform the servocontrol and, in an event of the fault indicated by the state signal, output the alternative braking control signal to the second power circuitry to generate the at least one first electrical power supply current and the at least one second electrical power supply current to perform the simplified servocontrol.