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Showing 1 to 15 of 15 for “"Dielectric elastomer actuators"”.
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Instability of Dielectric Elastomer Actuators
Dielectric elastomers (DEs) are an important class of materials, currently employed in the design and realization of electrically-driven, highly deformable actuators and devices, which find application in several fields of technology and engineering, including aerospace, biomedical and mechanical …
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Development of dielectric elastomer actuators for MRI devices
Dielectric elastomer (DE) actuators are an emerging class of polymer actuation devices. They exhibit large strains and have high force and energy densities. They can be designed in a variety of geometries and are inexpensive to manufacture. Currently, the use of DE Actuation is limited because …
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Dielectric elastomer actuators for binary robotics and mechatronics
… mechanical analogy to digital electronics, where actuators "flip" between two discrete states. Systems can be simple since low-level feedback control, sensors, wiring and electronics are virtually eliminated. However, conventional actuators, such as DC motors and gearbox are not appropriate for …
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Additively Manufactured Dielectric Elastomer Actuators: Development and Performance Enhancement
… biomedical, industrial, and aerospace. Soft actuators and sensors are essential components of any soft robot or morphing structure. Among the utilized materials, dielectric elastomers (DEs) are intrinsically compliant, high energy density polymers with fast and reversible electromechanical …
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Soft nanocomposites with enhanced electromechanical response for dielectric elastomer actuators
Electromechanical transducers based on elastomer capacitors are presently considered for many soft actuation applications, due to their large reversible deformation in response to electric field induced electrostatic pressure. The high operating voltage of such devices is currently a large …
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Comparison of DC Motors and Dielectric Elastomer Actuators For Wearable Wrist Exoskeletons
… required transmission are too large and heavy. Dielectric elastomer actuators (DEAs) may provide a solution to the actuation problem. The focus of this thesis was to compare DC motors with DEAs for use in a wearable wrist exoskeleton to assist with stroke rehabilitation. A simple setup of the …
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Dielectric Elastomer Actuators in Electro-Responsive Surfaces Based on Tunable Wrinkling and the Robotic Arm for Powerful and Continuous Movement
Dielectric elastomer actuators (DEAs) have been used for artificial muscles for years. Recently the DEA-based deformable surfaces have demonstrated controllable microscale roughness, ease of operation, fast response, and possibilities for programmable control. DEA muscles used in bioinspired …
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Design and Kinematics of a Dielectric Elastomer Actuated Micro Dragonfly Robot
… An at-scale dragonfly robot is designed around Dielectric Elastomer Actuators that compress and expand 0.5mm. With this knowledge, MATLAB was used to predict the linkage sizes that control the wing stroke movement. Using the values calculated in MATLAB, Solidworks was used to design a soft robot …
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Bi-directional Flyback Converter Circuit Design for Flapping-wing Microrobots
… with most of them using piezoelectric bimorphs actuators. Recently, Professor Yufeng Chen’s group has designed and used dielectric elastomer actuators(DEAs) in their aerial micro-robots, which have achieved marvelous collision resilience and acrobatic maneuvers. However, powering the DEAs …
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Additively Manufactured Bioinspired Microstructures for Active Surface Modification
… Next, microstructures were integrated with dielectric elastomer actuators (DEAs) to realize voltage-driven surface tuning. The fabricated surfaces exhibited strong bonding, shape recovery, and tunable hydrophobicity. DEA-induced deformation enabled rapid, reversible wetting state …
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An MRI compatible manipulator for prostate cancer detection and treatment
… magnetic fields prohibit the use of conventional actuators in the procedure. Dielectric Elastomer Actuators (DEAs) are MRI compatible due to their entirely polymer construction. Studies show that DEAs must be actuated in a bistable manner to be reliable. In this thesis, bistable DEAs were used in …
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Dynamic Modeling of Soft Robotic Dielectric Elastomer Actuator
<p>Dielectric elastomers actuators (DEAs) are among the preferred materials for developing lightweight, high compliance and energy efficient driven mechanisms for soft robots. Simple DEAs consist mostly of a homogeneous elastomeric materials that transduce electrical energy into mechanical …
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An artificial skeletal muscle for use in pediatric rehabilitation robotics
… limb, with cost being an important factor. Dielectric elastomer actuators (DEAs) feature great promise in fulfilling these requirements. Nonetheless, so far only a few studies have attempted to explore rehabilitation applications, and at a very preliminary level. ☐ The overall goal of this …
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Electromechanical Characterization of the Static and Dynamic Response of Dielectric Elastomer Membranes
Dielectric elastomers (DEs) are a relatively new electroactive polymer (EAP) transducer technology. They are capable of over 100% strain when actuated, and can be used as sensors to measure large strains. In actuation mode, the DE is subject to an electric field; in sensing mode, the capacitance of …
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Modifizierung von Silikonelastomeren mit organischen Dipolen für Dielektrische Elastomer Aktuatoren
Ein Dielektrischer Elastomer Aktuator (DEA) ist ein dehnbarer Kondensator, der aus einem Elastomerfilm besteht, der sich zwischen zwei flexiblen Elektroden befindet. Bei Anlegen einer elektrischen Spannung, ziehen sich die Elektroden aufgrund elektrostatischer Wechselwirkungen an, wodurch das …