Mößinger, Holger ; Haus, Henry ; Saif, Muhammad Bilal ; Hofmann, Klaus ; Schlaak, Helmut F. (2015)
Reduced size multichannel driving electronics for small scale dielectric elastomer actuator applications.
5th International Conference on Electromechanically Active Polymer transducers & artificial muscles (EuroEAP 2015). Tallinn, Estonia (09.-10.06.2015)
Konferenzveröffentlichung, Bibliographie

Kurzbeschreibung (Abstract)

As applications of DEA are moving closer to market matching driving electronics become more and more crucial. Commercially available components for building customized driving electronics, such as switching transistors, coils, etc. are typically either available for low voltage and low power or for high voltage and high power circuits. For large scale DE-actuators and applications the size of the electronics is less important and component size is not a limiting factor. Meanwhile small scale DEA applications require rather high voltages of about 1 kV but are very limited in power. For application using small and micro scaled DEA, such as miniaturized fluidic valves and pumps , tactile interfaces such as braille displays and similar tactile surfaces, the size of the components required for building driving electronics becomes a limiting factor. This results in the driving electronics being about the same size as the actuators, or even several times larger. Energy efficiency is also limited. To overcome these limitations an application specific integrated circuit (ASIC) capable of generating high voltage driving signals for four DE-actuators with a size of 4 mm x 5 mm x 1 mm was developed. From an input of 700 volts the ASIC generates four modulated switching signals with frequencies up to 40 kHz. The use of this ASIC allows significant reduction of driving electronics size, especially for multi-channel applications such as DEA matrices in tactile displays.

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