Multi-stability actuator based on shape memory alloy wire

摘要

A multi-stability SMA actuator comprising two shape memory alloy wires (1, 2) in an antagonistic configuration allowing to define a plurality of stable positions of a movable element (12), said positions being movable to lock the movable element It is held by a stopper, which is disengaged by the shape memory alloy wires 1 , 2 in its operation without the need for electric power.