Patent ID: 8727454
Filing Date: 2014-05-20
Classification: B60T

Abstract:
1. A system for controlling electric carbon brakes of an aircraft when the aircraft is taxiing, the aircraft having left and right landing gear with a plurality of wheels, and a corresponding plurality of wheel brakes configured to be actuated by commanded initiation of braking by low and high brake clamping force commands, the system comprising: a first portion of a plurality of electric brake actuators of each brake with a first range of low brake clamping force responsive to low brake clamping force commands; a second portion of a plurality of electric brake actuators of each brake with a second range of high brake clamping force responsive to high brake clamping force commands; and a brake actuation controller configured to monitor commanded initiation of braking of any of the plurality of wheel brakes of the aircraft, to set a residual brake clamping force to a predetermined minimum residual brake clamping force for the plurality of wheel brakes in response to said commanded initiation of braking of any of the plurality of wheel brakes, to actuate said first portion of said plurality of electric brake actuators to apply said predetermined minimum residual brake clamping force once wheel braking is commanded and maintaining said predetermined minimum residual brake clamping force despite a commanded release of braking of any of the plurality of wheel brakes; to actuate said second portion of electric brake actuators only when the commanded braking force is in the second high range of brake clamping force, and to discontinue applying said predetermined minimum residual brake clamping force in response to at least one control logic condition.