The interest in actuators based on dielectric elastomer films as a promising technology in robotic and mechatronic applications is increasing. The overall actuator performancesare influenced by the design of both the active film and the film supporting frame. This paper presents a single-acting actuator, which is capable of supplying a constant force over a given range of motion. The actuator is obtained by coupling a rectangular film of silicone dielectric elastomer with a monolithic frame designed to suitably modify the force generated by the dielectric elastomer film. The frame is a fully compliant mechanism whose main structural parameters are calculated using a pseudo-rigid-body model and then verified by finite element analysis. Simulations show promising performance of the proposed actuator.

Design of a single-acting constant-force actuator based on dielectric elastomers / Berselli, Giovanni; R., Vertechy; G., Vassura; V., Parenti Castelli. - In: JOURNAL OF MECHANISMS AND ROBOTICS. - ISSN 1942-4302. - STAMPA. - 1(2009), pp. 31-38.

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