Abstract: An electromechanical linear actuator may include: a containment structure; first and second lead nuts; two electric motors operably connected to rotate the lead nuts; a shaft inserted in the lead nuts; and coupling means with an intermediate coupling stage configured to mechanically couple the lead nuts with the shaft. A method of assessing fault in an electromechanical linear actuator may include: actuating the electric motors to drive the lead nuts in a same direction of rotation or in opposite directions of rotation; during the actuating of the electric motors, checking whether or not the shaft translates relative to the containment structure; checking for mechanical failure of the intermediate coupling stage with either lead nut, to actuate the electric motors in the same direction of rotation; and checking for mechanical failure of the shaft with the intermediate coupling stage, to actuate the electric motors in the opposite directions of rotation.

Abstract: The present disclosure relates to a method of assessing the presence of an electrical, electronic and/or mechanical fault in an electromechanical linear actuator (1), said electromechanical linear actuator (1) comprising a containment structure (2); first and second independent lead nuts (8, 9), each having its own thread and its own thread direction, two electric motors (5A, 5B) disposed in the containment structure (2) and operably connected with said first and second lead nuts (8, 9) to rotate them about said axis of rotation (X); a shaft (6) inserted in said first and second lead nuts (8, 9), a rotation-preventing mechanism (7) operable/active on said shaft (6) to prevent the shaft (6) from rotating about said axis of rotation (X); coupling means (10, 15, 11), configured to mechanically couple said first and second lead nuts (8, 9) with said shaft (6), so that a rotational movement of said first and/or second lead nuts (8, 9) will cause a translation of said shaft (6) along said axis of rotation (X).