METHOD FOR ESTIMATING THE PLAY IN AN ELECTROMECHANICAL ACTUATOR

The invention proposes a method for characterizing the amplitude (AS) of play (S(t)) in an electromechanical actuator (10), the electromechanical actuator comprising an electric motor (11) and a movable element (1) that is able to be moved by the motor, the actuator (10) comprising an upstream senso...

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Bibliographische Detailangaben
Hauptverfasser:	PIATON, Jerome, MANSOURI, Badr, GUYAMIER, Alexandre
Format:	Patent
Sprache:	eng
Schlagworte:	AEROPLANES AIRCRAFT AVIATION BLASTING BRAKES CLUTCHES COSMONAUTICS COUPLINGS FOR TRANSMITTING ROTATION DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING ORREPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLYADAPTED FOR USE IN CONNECTION WITH AIRCRAFT HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFTCOMPONENTS, NOT OTHERWISE PROVIDED FOR HEATING HELICOPTERS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention proposes a method for characterizing the amplitude (AS) of play (S(t)) in an electromechanical actuator (10), the electromechanical actuator comprising an electric motor (11) and a movable element (1) that is able to be moved by the motor, the actuator (10) comprising an upstream sensor (41) suitable for measuring a position (Xl(t)) of the motor and a downstream sensor (42) suitable for measuring a position (X2(t)) of the movable element, and a force sensor (43) suitable for measuring a load (Fl(t)) applied to the movable element, the method comprising steps of: (El) measuring the position (Xl(t)) of the motor, the position (X2(t)) of the movable element and the load (Fl(t)) applied to the movable element using the three sensors; (E2) on the basis of a computer model of the actuator and of the measured position (Xl(t)) of the motor, of the measured position (X2(t)) of the movable element and of the measured load (Fl(t)) applied to the movable element, estimating a value of the amount of mechanical play (S(t)) using a state observer and considering the play (S(t)) to be a state component; and (E3) determining the amplitude (AS) of the play from a set of values of the dynamic variable, which values are obtained in the preceding step at various times (t).