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Fabrication Process of Silicone-based Dielectric Elastomer Actuators
Published on: February 1, 2016
Dielectric elastomers as actuators for upper limb prosthetics: challenges and opportunities
1Bloorview Research Institute, 150 Kilgour Road, Toronto, Ont. M4G1R8, Canada.
Medical Engineering & Physics
|July 17, 2007
Summary
Dielectric elastomer (DE) actuators are not currently feasible for upper limb prosthetics due to durability and control issues. Further material advancements are needed for future integration of these lightweight actuators.
Area of Science:
- Biomedical Engineering
- Materials Science
Background:
- Prosthetic users desire lighter, anthropomorphic upper limb devices.
- Dielectric elastomer (DE) actuators offer potential for advanced prosthetic applications.
Purpose of the Study:
- To explore the potential of DE actuators for upper limb prosthetics.
- To critically review current challenges hindering DE actuator implementation in prosthetics.
Main Methods:
- Literature review of DE actuator technology.
- Empirical analysis of VHB 4910 strain performance and durability.
Main Results:
- DE actuators face challenges in durability, precision control, energy consumption, and anthropomorphic integration.
- VHB 4910 exhibits limitations in strain performance and durability for prosthetic use.
- Viscoelasticity, hysteresis, and high voltage requirements impede reliable control.
Conclusions:
- Current DE actuator technology is not feasible for powered upper extremity prosthetics.
- Reevaluation is warranted as DE material science advances.
