Transferring electrical energy between dielectric elastomer actuators

Ho Cheong Andrew Lo; Todd Gisby; Thomas McKay; Emilio Calius; Iain Anderson

doi:10.1117/12.915472

3 April 2012 Transferring electrical energy between dielectric elastomer actuators

Ho Cheong Andrew Lo, Todd Gisby, Thomas McKay, Emilio Calius, Iain Anderson

Proceedings Volume 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012; 834015 (2012) https://doi.org/10.1117/12.915472
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Unlike electromagnetic actuators, Dielectric Elastomer Actuators (DEAs) can exert a static holding force without consuming a significant amount of power. This is because DEAs are electrostatic actuators where the electric charges exert a Maxwell stress. A charged DEA stores its electrical energy as potential energy, in a similar way to a capacitor. To remove or reduce the Maxwell stress, the stored charge with its associated electrical energy must be removed. Current DEA driver electronics simply dispose of this stored electrical energy. If this energy can be recovered, the efficiency of DEAs would improve greatly. We present a simple and efficient way of re-using this stored energy by directly transferring the energy stored in one DEA to another. An energy transfer efficiency of approximately 85% has been achieved.

Citation Download Citation

Ho Cheong Andrew Lo, Todd Gisby, Thomas McKay, Emilio Calius, and Iain Anderson "Transferring electrical energy between dielectric elastomer actuators", Proc. SPIE 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012, 834015 (3 April 2012); https://doi.org/10.1117/12.915472

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