Apparatus and method for electromechanical positioning

摘要

Provided is a device comprising at least one tubular piezo element for the electro mechanical positioning of a slider within the piezo element. The device has least one elastic friction means for exerting a normal force on the slider, the friction means being connected to the piezo element. A method for controlling the device is also disclosed.

主权项

1. A device comprising:
a slider; at least one tubular piezo element for the electromechanical positioning of the slider within the piezo element along a longitudinal axis of the piezo element; and at least one elastic friction means having a frictional surface in contact with a first surface portion of the slider for exerting a permanent, constant normal force on the surface of the slider; and wherein said elastic friction means is configured to maintain said frictional surface in contact with said first surface portion during said positioning of the slider, including during relative movement of the slider with respect to said frictional surface of said elastic friction means, said contact exhibiting kinetic friction during said relative movement and exhibiting static friction when there is no said relative movement during said positioning; and wherein the friction means is connected to the piezo element.