Dielectric Elastomer based linear actuators are usually composed of one or more elastomer films and a flexible supporting frame. This paper proposes a methodology that allows to modify the available thrust as a function of the actuator’s length at will of the designer and, in particular, to obtain constant force actuators. The design procedure is divided in two steps: 1) optimization of the Dielectric Elastomer electromechanical parameters 2) design of the flexible frame. The supporting frame is conceived as a compliant mechanism and makes use of the stiffness characteristics of slider-crank mechanisms with elastic revolute pairs to be coupled (in symmetric or axis-symmetric configurations) with films of different geometries. Three actuator concepts are proposed which highlight the goodness of the proposed method.
Metodologia per la sintesi progettuale di attuatori ad elastomeri dielettrici.
BERSELLI, GIOVANNI;
2009-01-01
Abstract
Dielectric Elastomer based linear actuators are usually composed of one or more elastomer films and a flexible supporting frame. This paper proposes a methodology that allows to modify the available thrust as a function of the actuator’s length at will of the designer and, in particular, to obtain constant force actuators. The design procedure is divided in two steps: 1) optimization of the Dielectric Elastomer electromechanical parameters 2) design of the flexible frame. The supporting frame is conceived as a compliant mechanism and makes use of the stiffness characteristics of slider-crank mechanisms with elastic revolute pairs to be coupled (in symmetric or axis-symmetric configurations) with films of different geometries. Three actuator concepts are proposed which highlight the goodness of the proposed method.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
