Method and device for monitoring a servo-valve actuation system

A method for monitoring a variable-geometry actuation system (1) of a turbojet engine is disclosed. Said actuation system comprises a control device (2), a servo-valve (3), an a cylinder (4) that is controlled by the servo-valve (2), the control device being able to determine a control current (Icmd...

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Bibliographische Detailangaben
Hauptverfasser:	GODEL FRANCK, GUEIT NICOLAS MARIE PIERRE, PONTALLIER BENOIT
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A method for monitoring a variable-geometry actuation system (1) of a turbojet engine is disclosed. Said actuation system comprises a control device (2), a servo-valve (3), an a cylinder (4) that is controlled by the servo-valve (2), the control device being able to determine a control current (Icmd) according to a set position (Pos_c) and a measured position (Pos_m) of the cylinder (4) and feed said control current (Icmd) to the servo-valve (3). The monitoring method is characterized in that it includes: a step of detecting a stabilized state; a step of determining an average value of the control current during the detection of the stabilized state; and a step of comparing said average value with a predetermined threshold value.