METHODS FOR ASSESSING PRESENCE OF ELECTRICAL, ELECTRONIC, AND/OR MECHANICAL FAULTS IN ELECTROMECHANICAL LINEAR ACTUATORS

摘要

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). The method is characterized by comprising the steps of:actuating said two electric motors (5A, 5B) to drive said first and second lead nuts (8, 9) in the same direction of rotation or in opposite directions of rotation;during said step of actuating said two electric motors (5A, 5B), checking whether said shaft (6) translates relative to said containment structure (2).