Electronic braking system with brake wear measurement and running clearance adjustment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 21, 1999
Grant Date -
N/A
app pub date -
May 9, 1997
filing date -
May 9, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
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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