Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1997-05-09
1999-12-21
Oberleitner, Robert J.
Brakes
Wheel
Axially movable brake element or housing therefor
188 111L, 188162, F16D 5536
Patent
active
060036400
ABSTRACT:
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.
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Patent Abstract of Japan, vol. 15, No. 186 (M-1112), May 14, 1991, & JP 03 045462 A (Honda Motor).
Lipka Pamela J.
Oberleitner Robert J.
The B.F. Goodrich Company
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