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Bachelor's Thesis
Author of thesis: Emma Pastieriková
Acad. year: 2025/2026
Supervisor: Ing. Lukáš Kopečný, Ph.D.
Reviewer: prof. Ing. Luděk Žalud, Ph.D.
The aim of this bachelor’s thesis is to analyze novel unconventional actuators developed over the past ten years, to describe the operating principle of a dielectric elastomer actuator (DEA), to develop its mathematical-physical model and to implement a physical model. The thesis focuses on the effects of Maxwell stress and the mechanical response of the elastomer. A simplified balance between electrostatic pressure and mechanical resistance was developed, enabling the simulation of elastomer deformation under different voltage values. The model was implemented in MATLAB and Simulink. In the experimental part, a simplified DEA model was created from a frame made of PETG, 3M VHB 4910 elastomer, colloidal graphite and aluminum conductive tape. The power supply was provided by a laboratory power supply and a high-voltage DC converter. However, it was not possible to achieve visible deformation of the membrane experimentally. The main causes were identified as insufficient mechanical preload, inhomogeneous electric field and choosing an unsuitable DC converter. The result point to the principles of DEA operation and the possibilities of their optimalization. This model is suitable for soft robotics and precision microactuators.
actuator, unconventional, dielectric elastomer, actuator, Maxwell stress, viscoelasticity, mathematical-physical model, 3D printing
Date of defence
17.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
D
Process of defence
Studentka obhájila bakalářskou práci. Komise neměla žádné námitky k řešené práci. V průběhu odborné rozpravy studentka odpověděla na dotazy oponenta. Navazující otázka komise směřovala k použitému DC měniči - jaký jste použila a proč? Používala jste při práci s vysokým napětím ochranné pomůcky? Přemýšlela jste nad možnostmi měření napětí řádově v kV? O kolik jste předpokládala pohyb pístu při 4 kV? Podle kterých rovnic jste sestavila model v MATLAB/Simulink? Studentka odpověděla na položené otázky komise s výhradami.
Language of thesis
Czech
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Control and Instrumentation
Study programme
Automation and Measurement (BPC-AMT)
Composition of Committee
doc. Ing. Jan Mikulka, Ph.D. (předseda) doc. Ing. Petr Blaha, Ph.D. (místopředseda) Ing. Ilona Janáková, Ph.D. (člen) Ing. Lukáš Kopečný, Ph.D. (člen) Ing. Tomáš Macho, Ph.D. (člen) Ing. Soňa Šedivá, Ph.D. (člen)
Supervisor’s reportIng. Lukáš Kopečný, Ph.D.
Grade proposed by supervisor: C
Reviewer’s reportprof. Ing. Luděk Žalud, Ph.D.
Grade proposed by reviewer: D
Responsibility: Mgr. et Mgr. Hana Odstrčilová