Method for monitoring at least two electromechanical braking actuators
First Claim
1. A method for monitoring and restoring or disabling at least three aircraft wheel electromechanical braking actuators (5), each electromechanical actuator (5) being powered by a power supply providing a current (Ia) under control of a braking controller (9) to selectively apply a braking force to friction members (15), the monitoring and restoring or disabling method comprising:
- activating the electromechanical actuators (5), andthereafter, for each active electromechanical actuator (5), performing the steps of;
determining with a current sensor (18) a current value (Ivr) representative of the power supply current of the electromechanical actuator;
determining by the braking controller (9) a reference current value (Ir) estimated from the power supply currents of at least two other electromechanical actuator (5);
comparing by the braking controller (9) the representative current value (Ivr) and the reference current value (Ir);
detecting by the braking controller (9) an abnormal operation of the electromechanical actuator (5) when the difference between the representative current value and the reference current value is above a predetermined threshold (Is), andfollowing the detection of an abnormal operation of an electromechanical actuator (5), the steps of;
identifying by the braking controller (9) the electromechanical actuator (5) exhibiting the abnormal operation;
signalling by the braking controller (9) abnormal operation of the electromechanical actuator (5);
performing by the braking controller (9) a restoration or deactivation of the abnormal electromechanical actuator (5).
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Accused Products
Abstract
A method for monitoring at least two aircraft wheel electromechanical braking actuators. For each electromechanical actuator, the method includes first determining a current value representative of the power supply current of the electromechanical actuator and determining a reference current value estimated from the power supply currents of at least one other electromechanical actuator. Then, the representative current value and the reference current value are compared. Any abnormal operation of the electromechanical actuator is detected when the difference between the representative current value and the reference current value is above a predetermined threshold.
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Citations
7 Claims
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1. A method for monitoring and restoring or disabling at least three aircraft wheel electromechanical braking actuators (5), each electromechanical actuator (5) being powered by a power supply providing a current (Ia) under control of a braking controller (9) to selectively apply a braking force to friction members (15), the monitoring and restoring or disabling method comprising:
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activating the electromechanical actuators (5), and thereafter, for each active electromechanical actuator (5), performing the steps of; determining with a current sensor (18) a current value (Ivr) representative of the power supply current of the electromechanical actuator; determining by the braking controller (9) a reference current value (Ir) estimated from the power supply currents of at least two other electromechanical actuator (5); comparing by the braking controller (9) the representative current value (Ivr) and the reference current value (Ir); detecting by the braking controller (9) an abnormal operation of the electromechanical actuator (5) when the difference between the representative current value and the reference current value is above a predetermined threshold (Is), and following the detection of an abnormal operation of an electromechanical actuator (5), the steps of; identifying by the braking controller (9) the electromechanical actuator (5) exhibiting the abnormal operation; signalling by the braking controller (9) abnormal operation of the electromechanical actuator (5); performing by the braking controller (9) a restoration or deactivation of the abnormal electromechanical actuator (5). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification