prikaz prve stranice dokumenta Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije
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doctoral thesis
Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. urn:nbn:hr:168:786668
Šijak, Tomislav
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Control and Computer Engineering

Institutional repository: FER Repository

Cite this document

Šijak, T. (2006). Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:786668

Šijak, Tomislav. "Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. https://urn.nsk.hr/urn:nbn:hr:168:786668

Šijak, Tomislav. "Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. https://urn.nsk.hr/urn:nbn:hr:168:786668

Šijak, T. (2006). 'Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:168:786668

Šijak T. Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2006 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:168:786668

T. Šijak, "Analiza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2006. Available at: https://urn.nsk.hr/urn:nbn:hr:168:786668

Metadata
TitleAnaliza nelinearnih sustava upravljanja s neizrazitom logikom metodom opisne funkcije
AuthorTomislav Šijak
MentorLjubomir Kuljača (mentor)
Committee memberZoran Vukić (predsjednik povjerenstva)
Committee memberLjubomir Kuljača (član povjerenstva)
Committee memberVladimir Koroman (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Control and Computer Engineering)
Zagreb
Defense date and country2006-05-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Automation and Robotics
Universal decimal classification
(UDC)		67/68 - Various industries, trades and crafts
007 - Cybernetics. Self-acting systems
Abstract
U radu je prikazana metoda određivanja opisne funkcije nelinearnih elemenata s neparno simetričnom statičkom karakteristikom sa histerezom. Metoda se zasniva na aproksimaciji statičke karakteristike po dijelovima lineariziranom karakteristikom. Uvedene su oznake niza točaka koje definiraju linearnu aproksimaciju statičke karakteristike. Na osnovi linearno aproksimirane statičke karakteristike izvedeni su algebarski izrazi opisne funkcije. Izvedeni su algebarski izrazi za proračun procjene greške određivanja opisne funkcije, koja proizlazi iz aproksimacije statičke karakteristike po dijelovima lineariziranom karakteristikom. Metoda je ilustrirana na tri jednostavna nelinearna elementa. Proračun opisne funkcije je proveden numerički i analitički, te su navedene pripadne vrijednosti procjene greške proračuna. Rezultati su uspoređeni s analitički i eksperimentalno određenim opisnim funkcijama. Prikazana je primjena metode određivanja opisne funkcije na nelinearnom sustavu s neizrazitom logikom. Dobivena opisna funkcija je primijenjena u dinamičkoj analizi sustava na primjeru modela sekundarne regulacije frekvencije i djelatne snage izoliranog elektroenergetskog sustava s termoelektranama s neizrazitim regulatorom. Provedena je analiza područja stabilnosti, analiza pojave vlastitih oscilacija, te su prikazani oscilogrami koji ilustriraju dinamičke karakteristike analiziranog sustava.
Abstract (english)
The method of determination of describing function of nonlinear elements with odd static characteristic with hysteresis is here presented. The method is based on approximation of static characteristic with linear piecewise elements. Designations of the set of point defining linear approximation are introduced. On the basis of lineary approximated static characteristic, algebraic expressions for determination of describing function are derived. The algebraic expressions for calculation of the error estimation of determination of describing function, resulting in approximation of the describing function with linear piecewise elements, are derived. The method is illustrated on three simple nonlinear elements. Determination of the describing function is conducted numerically and analytically, and values of error estimation are given. The results are compared to the analytically and experimentally determined describing function. Determination of the describing function of system with fuzzy logic element is presented. The describing function of fuzzy logic element is used in the analysis of dynamics on the example of secondary loadfrequency control model of isolated power system with thermo powerplants, with fuzzy logic controller. The analysis of stability and limit cycles is conducted. The oscillograms which illustrate the dynamical characteristics of the analysed system are given.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:786668
Study programmeTitle: Electrical Engineering and Computing
Study programme type: university
Study level: postgraduate
Academic / professional title: Doktor znanosti elektrotehnike i računarstva (Doktor znanosti elektrotehnike i računarstva)
Type of resourceText
File originBorn digital
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Created on2019-05-10 10:38:59