A conically shaped Dielectric Elastomer (DE) linear actuator is presented which is obtained by coupling a DE film with a compliant mechanism. The compliant mechanism is designed, by means of a pseudo-rigid-body model, to suitably modify the force generated by the elastomer film. The resulting actuator provides a nearly constant force along the entire actuator stroke when the DE film is activated and returns to an initial rest position when the DE film is deactivated. Experimental activity fully validates the proposed concept. Possible applications of this kind of actuator are Braille cells, light weight robots and haptic devices.
Experimental evaluation of optimal conically-shaped dielectric elastomer linear actuators / Berselli, Giovanni; R., Vertechy; G., Vassura; V., Parenti Castelli. - ELETTRONICO. - (2009), pp. 2910-2915. (Intervento presentato al convegno 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2009 tenutosi a St. Louis, MO, usa nel 11-15 Ottobre 2009) [10.1109/IROS.2009.5354605].
Experimental evaluation of optimal conically-shaped dielectric elastomer linear actuators
BERSELLI, Giovanni;
2009
Abstract
A conically shaped Dielectric Elastomer (DE) linear actuator is presented which is obtained by coupling a DE film with a compliant mechanism. The compliant mechanism is designed, by means of a pseudo-rigid-body model, to suitably modify the force generated by the elastomer film. The resulting actuator provides a nearly constant force along the entire actuator stroke when the DE film is activated and returns to an initial rest position when the DE film is deactivated. Experimental activity fully validates the proposed concept. Possible applications of this kind of actuator are Braille cells, light weight robots and haptic devices.
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