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Development of slimline high voltage supply electronics for the dielectric elastomer actuators

Prabhu, Sriram K. :
Development of slimline high voltage supply electronics for the dielectric elastomer actuators.
TU Darmstadt Institut EMK / MEMS , Darmstadt
[Masterarbeit], (2012)

Kurzbeschreibung (Abstract)

Dielectric elastomer actuators requires a high voltage drive electronics. Power supplies for DEAs should be capable of providing a high voltage AC and DC signal at low power levels. In laboratory environment, it is required to have a supply electronics capable of providing a range of voltage and frequency for testing. Further, due to the nonlinear characteristics of DEA a programmable drive capable of controlling the force output according to a feedback provided is desired. In this thesis, the requirements of drive for DEA is systematically analysed. A survey of available drive electronics for other similar applications is done to get an idea of possible technologies that can be used. A prototype drive electronics is designed and realised. The driving electronics generates a maximum DC voltage of 800 V. The AC signal can be amplified upto 500 V peak. The input to the system is 15 V DC. The DC voltage is converted to high voltage using converter from PICO Electronics. The AC signal amplification module consists of a low voltage H bridge which provides a high frequency switching signal to the transformer. The high voltage transformer output is rectified using a diode full bridge converter and then converted to an alternating signal by modulating the control signal. The DC and AC signals are coupled at the output. The microcontroller Atmega128 is used to control the electronics. The output force can be controlled by providing a feedback to the microcontroller. In the software the Taylor�s series expansion to generate an inverse square function is implemented. This provides an open loop nonlinear control solution for DEAs.

Typ des Eintrags: Masterarbeit
Erschienen: 2012
Autor(en): Prabhu, Sriram K.
Titel: Development of slimline high voltage supply electronics for the dielectric elastomer actuators
Sprache: Englisch
Kurzbeschreibung (Abstract):

Dielectric elastomer actuators requires a high voltage drive electronics. Power supplies for DEAs should be capable of providing a high voltage AC and DC signal at low power levels. In laboratory environment, it is required to have a supply electronics capable of providing a range of voltage and frequency for testing. Further, due to the nonlinear characteristics of DEA a programmable drive capable of controlling the force output according to a feedback provided is desired. In this thesis, the requirements of drive for DEA is systematically analysed. A survey of available drive electronics for other similar applications is done to get an idea of possible technologies that can be used. A prototype drive electronics is designed and realised. The driving electronics generates a maximum DC voltage of 800 V. The AC signal can be amplified upto 500 V peak. The input to the system is 15 V DC. The DC voltage is converted to high voltage using converter from PICO Electronics. The AC signal amplification module consists of a low voltage H bridge which provides a high frequency switching signal to the transformer. The high voltage transformer output is rectified using a diode full bridge converter and then converted to an alternating signal by modulating the control signal. The DC and AC signals are coupled at the output. The microcontroller Atmega128 is used to control the electronics. The output force can be controlled by providing a feedback to the microcontroller. In the software the Taylor�s series expansion to generate an inverse square function is implemented. This provides an open loop nonlinear control solution for DEAs.

Ort: Darmstadt
Freie Schlagworte: Mikro- und Feinwerktechnik Elektromechanische Konstruktionen
Fachbereich(e)/-gebiet(e): Fachbereich Elektrotechnik und Informationstechnik
Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektromechanische Konstruktionen
Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektromechanische Konstruktionen > Mikrotechnik und Elektromechanische Systeme
Hinterlegungsdatum: 13 Jul 2012 07:19
Zusätzliche Informationen:

EMK-spezifische Daten:

Lagerort Dokument:Archiv EMK, Kontakt über Sekretariate Bibliotheks-Siegel: 17/24 EMKM1798

Beginn Datum: 05-12-2011

Ende Datum: 04-06-2012

ID-Nummer: 17/24 EMK M1798
Gutachter / Prüfer: Schlaak, Prof. Dr. Helmut F.
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