Electromechanical actuator

An electromechanical actuator that comprises a support and a deformable element that comprises a portion anchored to at least one anchoring zone of the support and a mobile portion, with the deformable element comprising an electro-active layer, a reference electrode arranged on a first face of the electro-active layer and an actuating layer arranged on a second face, opposite the first face of the electro-active layer, with the electro-active layer being configured to be deformed under the effect of a difference in potential applied between the reference electrode and the actuating electrode,

• said actuator comprising:
• a capacitive device for measuring the deformation of the deformable element, said device being at least partially formed by a capacitive stack comprising a measuring electrode arranged on the second face of the electro-active layer, a measuring portion of the reference electrode located facing the measuring electrode, and a portion of the electro-active layer inserted between the measuring electrode and the measuring portion of the reference electrode, the capacitive measuring device being configured to measure the capacity of the capacitive stack.