DEVELOPING SPRING-ROLL DIELECTRIC ELASTOMER ACTUATOR SYSTEM BASED ON NEW OPTIMAL DESIGN PARAMETERS

Document Type : Research Paper

Authors

1 Electronics and Communication Dept.,Faculty of Engineering, Helwan University, Cairo,Egypt

2 Industrial Training Council, Cairo, Egypt.

Abstract

To develop a well designed practical spring-roll dielectric elastomer
actuator system, we have to optimize the design parameters of spring-roll
dielectric elastomer and develop a voltage supply that is able to pump < br />enough controlled charges and provide a wide range of controlled
voltages to the actuator. In this paper, switched based multistage charge
pump driven by a controlled low voltage switching power supply and a
voltage driver is proposed as a wide range output voltage supply.
Spring-roll dielectric elastomer optimal design parameters according to
[1] areh1
p=5, h2
p=2, a=10. It is proven that h2
p has a subtle effect on both
actuationl1 and dimensionless axial force p/mL2L3 however it has a great
effect on the applied voltage required activating the actuator.
Furthermore, when l2
p increases, the applied voltage decreases and the
problems of high voltage are avoided. Therefore the optimal design
parameters modified to l1
p=5, l2
p=5, a=10 instead of l1
p=5, l2
p=2,
a=10.
In this paper, based on the equations of state, new approaches for
designing a spring-roll dielectric elastomer actuator have been developed.
The key issue of the actuation range depends upon weather the actuator
has a fixed load or variable multi-loads.
The achieved results based on the proposed approaches show that the
applied voltage has been reduced and the design of the actuator is getting
simpler

Keywords

Main Subjects

JES. Journal of Engineering Sciences
Volume 39, No 5
September and October 2011
Pages 1111-1128

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