Results 171 to 180 of about 1,266 (219)

Granularly Coupled Dielectric Elastomer Actuators

IEEE/ASME Transactions on Mechatronics, 2011
Dielectric elastomer actuators (DEAs) have been demonstrated to represent today a high-performance technology for electroactive polymer mechatronics. As a means to improve versatility and safety of DEAs, so-called “hydrostatically coupled” DEAs (HC-DEAs) have recently been shown to offer new opportunities.
CARPI, FEDERICO, Frediani, Gabriele, Nanni, Massimo, De Rossi, Danilo   +3 more
openaire   +2 more sources

Hydrostatically Coupled Dielectric Elastomer Actuators

IEEE/ASME Transactions on Mechatronics, 2010
Within the emerging field of polymer-based mechatronics, soft materials showing intrinsic electromechanical transduction properties are being largely studied to develop new types of actuators. Among them, so-called dielectric elastomer (DE) actuators are one of the most promising.
CARPI, FEDERICO, Frediani, Gabriele, De Rossi, Danilo   +2 more
openaire   +1 more source

Microrobot actuated by soft actuators based on dielectric elastomer

IEEE/RSJ International Conference on Intelligent Robots and System, 2003
In this paper a microrobot, mimicking annelid animals like the earthworm, is presented. The robot is composed of several ring-like segments. Each segment is able to generate three degree-of-freedom motions such as pan/tilt/up-down respectively, and it is actuated by three soft actuators located equidistantly along the circumferential direction.
Hyoukryeol Choi, SungMoo Ryew, Kwangmok Jung, Hunmo Kim, Jae Wook Jeon, Jaedo Nam, Ryutaro Maeda, Kazuo Tanie   +7 more
openaire   +1 more source

Materials for dielectric elastomer actuators

SPIE Proceedings, 2004
Dielectric elastomer actuators consist of an elastomer film sandwiched between compliant electrodes. They work as electrostatic actuators: when a large electric field is applied over the electrodes, the rubber is compressed and the elastomer film elongates in the film plane.
Peter Sommer-Larsen, Anne L. Larsen
openaire   +1 more source

Response of dielectric elastomer actuators

SPIE Proceedings, 2001
Elastomer films sandwiched between compliant electrodes work as electrostatic actuators when a large electric field is applied over the electrodes. We have analyzed the mechanical and electrical response of actuators to a sinusoidal varying driving voltage.
Peter Sommer-Larsen, Jacob C. Hooker, Guggi Kofod, Keld West, Mohammed Benslimane, Peter Gravesen   +5 more
openaire   +1 more source

Folded dielectric elastomer actuators

Smart Materials and Structures, 2007
Polymer-based linear actuators with contractile ability are currently demanded for several types of applications. Within the class of dielectric elastomer actuators, two basic configurations are available today for such a purpose: the multi-layer stack and the helical structure.
CARPI, FEDERICO, Salaris, Claudio, De Rossi, Danilo   +2 more
openaire   +1 more source

A New Procedure for the Optimization of a Dielectric Elastomer Actuator

2009
A novel mathematical procedure is proposed, which makes it possible to optimize lozenge-shaped dielectric-elastomer-based linear actuators for known materials and desired force/stroke requirements. Simulation results are provided which both demonstrate the efficacy of the novel procedure with respect to traditional design approaches and show that ...
VERTECHY, ROCCO, BERSELLI, GIOVANNI, PARENTI CASTELLI, VINCENZO, VASSURA, GABRIELE   +3 more
openaire   +5 more sources

Dielectric Elastomers in Actuator Technology

Advanced Engineering Materials, 2005
AbstractElectroactive polymers (EAPs) are characterized by their ability to respond to external electric stimulation by displaying a significant shape or size displacement. Actuators, based on dielectric elastomers exhibiting low elastic stiffness and high dielectric constants, can produce high strain levels from 10 to 380 %.
C. Löwe, X. Zhang, G. Kovacs
openaire   +1 more source

Helical dielectric elastomer actuators

Smart Materials and Structures, 2005
This paper presents a new type of contractile polymer-based electromechanical linear actuator. The device belongs to the class of dielectric elastomer actuators, which are typically capable of undergoing large deformations induced by an applied electric field.
CARPI, FEDERICO, Migliore, Antonio, Serra, Giorgio, De Rossi, Danilo   +3 more
openaire   +1 more source

Applications of dielectric elastomer actuators

SPIE Proceedings, 2001
Dielectric elastomer actuators, based on the field-induced deformation of elastomeric polymers with compliant electrodes, can produce a large strain response, combined with a fast response time and high electromechanical efficiency. This unique performance, combined with other factors such as low cost, suggests many potential applications, a wide range
Ron Pelrine, Peter Sommer-Larsen, Roy D. Kornbluh, Richard Heydt, Guggi Kofod, Qibing Pei, Peter Gravesen   +6 more
openaire   +1 more source