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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 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] areη1=5, η2=2, α=10. It is proven that η2 has a subtle effect on both actuationλ1 and dimensionless axial force p/μL2L3 however it has a great effect on the applied voltage required activating the actuator. Furthermore, when λ2 increases, the applied voltage decreases and the problems of high voltage are avoided. Therefore the optimal design parameters modified to λ1=5, λ2=5, α=10 instead of λ1=5, λ2=2, α=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.

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