Energy efficient control and operation of high voltage dielectric elastomer actuators
What is it about?
This study presents modelling and control of a high-voltage ratio flyback converter for driving capacitive loads including smart material dielectric elastomer actuators (DEAs). These actuators find various applications including artificial muscles, optical devices, smart skin, and acoustics but require high actuation voltages. To this end, a high-voltage bidirectional flyback converter for driving a capacitive load is studied in terms of modelling and control and applied to a DEA. The state-space model of the converter is obtained for the capacitor charge and discharge modes when the converter operates in the continuous conduction mode and used to obtain a load voltage controller using the feedback linearisation method. The converter can be used to regenerate the capacitor charge into the dc source. The proposed hardware and control strategy was built and validated by driving DEA capacitive loads operating at high voltages around 4 kV. The experimental results are presented which validate the performance of the proposed converter and its control strategy.
Why is it important?
Growing number of developers and researchers use Dielectric Elastomer Actuators (DEAs) in industry and academia. Typically, DEAs work with high voltage of more than 1kV. Thus it is very important to develop the knowledge and infrastructure to support efficient, high voltage control of these devices.
The following have contributed to this page: Shahram Pourazadi
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