| 摘要 |
<p>#CMT# #/CMT# The method involves bringing electric actuators (6a, 6b) in retracted and deployed positions matched to respective positions of a semi-circular movable element i.e. movable cowl (2), of a nacelle of a thrust reverser e.g. door-type thrust reverser, of a turbojet engine of an aircraft. Position values of the actuators in the respective retracted and deployed positions obtained by a position measuring unit i.e. resolver, are stored. Mechanical stops are detected by measuring variation of supply current of an electric motor (7) that actuates the actuators. #CMT#USE : #/CMT# Method for self-calibration of an electric actuator that is utilized for actuating a semi-circular movable element i.e. movable cowl, of a nacelle of a thrust reverser (claimed) e.g. door-type thrust reverser and grid-type thrust reverser, that is utilized for improving braking capacity of an aircraft during landing of a turbojet engine of the aircraft. #CMT#ADVANTAGE : #/CMT# The method permits to install the electric actuator in a precise manner for adapting to the course of the actuator at the nacelle. The method permits to define an electronic stop slightly before the mechanical stop, thus avoiding stop impact risking to weaken mechanical parts and ensuring optimal closure and deployment of the cowl. The method permits to determine tolerance to be applied in an easy manner and to self-calibrate the electric actuator from a pilot cabin. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a movable cowl and an actuating system of the cowl. 2 : Movable cowl 6a, 6b : Electric actuators 7 : Electric motor 8a, 8b : Flexible gearbox drive shafts 9 : Control interface.</p> |
