초록 ▼

An electrically actuated aircraft brake system and method which provides for brake wear measurement and running clearance adjustment. Brake wear and running clearance measurement are obtained by analyzing the output of position sensing circuitry. In a preferred embodiment, present brake disk stack h

An electrically actuated aircraft brake system and method which provides for brake wear measurement and running clearance adjustment. Brake wear and running clearance measurement are obtained by analyzing the output of position sensing circuitry. In a preferred embodiment, present brake disk stack height is measured using actuator position sensors, and the output of the sensors is compared by a controller to a reference brake disk stack height to provide an indication of the amount of brake wear. The reference brake disk stack height is obtained by lightly loading the brake disk stack and using the actuator position sensor or sensors to measure the displacement of the actuator ram or rams to the brake disk stack. The controller also is operable to effect movement of the reciprocating ram for lightly loading the brake disk stack by a predetermined amount to obtain from the position transducer a present displacement value of the position signal, and then using the present displacement value to determine a running clearance position of the reciprocating ram by subtracting a predetermined clearance value from said present displacement value.

대표청구항 ▼

[ What is claimed is:] [1.] A brake system comprising:a brake disk stack;a reciprocating ram;a servo motor operatively connected to the reciprocating ram for selectively moving the reciprocating ram into and out of forceful engagement with the brake disk stack for applying and releasing braking forc

[ What is claimed is:] [1.] A brake system comprising:a brake disk stack;a reciprocating ram;a servo motor operatively connected to the reciprocating ram for selectively moving the reciprocating ram into and out of forceful engagement with the brake disk stack for applying and releasing braking force on a rotatable wheel;a controller for controlling the servo motor for selective control of the reciprocating ram and regulation of the force applied by the reciprocating ram against the brake disk stack, anda position sensor which supplies a position signal representative of the position of the reciprocating ram; andwherein the controller includes means for effecting displacement of the reciprocating ram to load the brake disk stack by a predetermined amount to obtain from the position sensor a present displacement value of the position signal, and for comparing said present displacement value to a reference value to provide a measurement of wear of the brake disk stack.