prikaz prve stranice dokumenta Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata
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scientific master's theses
Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2000. urn:nbn:hr:168:209212
Topolnik, Marko
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electrical Engineering Fundamentals and Measurements

Institutional repository: FER Repository

Cite this document

Topolnik, M. (2000). Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata (Scientific master's theses). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:209212

Topolnik, Marko. "Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2000. https://urn.nsk.hr/urn:nbn:hr:168:209212

Topolnik, Marko. "Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2000. https://urn.nsk.hr/urn:nbn:hr:168:209212

Topolnik, M. (2000). 'Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata', Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 17 February 2025, https://urn.nsk.hr/urn:nbn:hr:168:209212

Topolnik M. Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata [Scientific master's theses]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2000 [cited 2025 February 17] Available at: https://urn.nsk.hr/urn:nbn:hr:168:209212

M. Topolnik, "Proračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata", Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2000. Available at: https://urn.nsk.hr/urn:nbn:hr:168:209212

Metadata
TitleProračun svezanih elektromagnetskih polja i pomaka strukture primjenom metode konačnih elemenata
AuthorMarko Topolnik
MentorŽeljko Štih (mentor)
Committee memberDamir Kalpić (predsjednik povjerenstva)
Committee memberŽeljko Štih (član povjerenstva)
Committee memberRajko Grubišić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Electrical Engineering Fundamentals and Measurements)
Zagreb
Defense date and country2000, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
U ovom magistarskom radu analizira se rad elektromehaničkih pretvarača energije (aktuatora). Pritom se razmatraju tri pristupa. Prvi pristup koristi elektromehanički model pretvorbe energije s koncentriranim parametrima. U tom modelu aktuator je prikazan crnom kutijom unutar koje se bez gubitaka pohranjuje magnetska energija te obavlja pretvorba energije iz električke u mehaničku. Za definiranje svojstava crne kutije koristi se model linearnog magnetskog kruga. Dobivaju se analitičke funkcije stanja crne kutije. Drugi pristup također koristi elektromehanički model pretvorbe energije, a za definiranje funkcija stanja crne kutije koristi magnetostatički model konačnih elemenata koji se analizira u nizu diskretnih statičkih stanja. Rezultati tih analiza interpoliraju se bikubičnom spline-interpolacijom da bi se dobile glatke funkcije stanja crne kutije. Treći pristup koristi dinamički elektromagnetsko-strukturni model konačnih elemenata s malim pomakom strukture. Analiza ovog modela izravno daje dinamičko ponašanje aktuatora, no on je ograničen malim iznosom pomaka strukture i korištenjem strujne umjesto naponske pobude. Najpotpuniju informaciju i najbolje slaganje s mjerenjima dala je analiza prema drugom pristupu. Analiza prema trećem pristupu bitna je jer jedina daje uvid u dinamičke učinke kao što su vrtložne struje.
Abstract (english)
In this thesis, the dynamic behavior of electromechanical actuators is studied. Three approaches are proposed. The first approach utilizes a lumped-parameter electromechanical energy conversion model. The actuator is presented as a black box containing a lossless system which performs the conversion between electrical and mechanical energy. The properties of the black box are derived from a linear magnetic circuit model. The properties are expressed as analytical functions of the state of the black box. The second approach also utilizes the lumped-parameter model, but it derives the properties of the black box from a magnetostatic finite element model which is analyzed in a series of static states. The results of these analyses are interpolated using a bicubic spline interpolation to acquire smooth functions of the black box state. The third approach utilizes a dynamic electromagnetic-structural finite element model with small structural motion. The dynamic behavior is obtained directly by analyzing the model, but the model is limited by small maximum displacement of the moving part and by the application of a current source instead of a voltage source. The most complete information about the dynamic behavior of the actuator is obtained from the second approach. The unique value of the third approach is that it gives information about the dynamic effects such as eddy currents.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:209212
Study programmeTitle: Postgraduate master programme in electrical engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsClosed access
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Created on2019-04-11 12:52:46