ELEKTROTEHNIČKI FAKULTET U SARAJEVU

Metode i tehnike identifikacije - Seminarski rad
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ZADATAK RADA.........................................................................................................................................2
SAŽETAK......................................................................................................................................................3
1. UVOD .........................................................................................................................................................4
2. SIT TOOLBOX-A ZA IDENTIFIKACIJU SISTEMA U OKVIRU MATLAB-A..............................6
2.1 TERMINOLOGIJA KOJA SE KORISTI U SIT PAKETU ..................................................................................7
2.2 OSNOVNE INFORMACIJE O DINAMIČKIM MODELIMA...............................................................................8
2.3 OSNOVNI DINAMIČKI MODEL .................................................................................................................8
2.4 VARIJANTE OPISA MODELA....................................................................................................................9
2.4.1 ARX modeli ...................................................................................................................................9
2.4.2 Linearni modeli u prostoru stanja (linear state-space models) ....................................................9
2.5 MULTIVARIJABILNI SISTEMI (MIMO - MULTI INPUT, MULTI OUTPUT)................................................10
3. OPIS KONKRETNOG PROBLEMA ..................................................................................................11
4. PARAMETARSKA IDENTIFIKACIJA...............................................................................................42
4.1 ARX MODEL........................................................................................................................................42
4.2. PEM METODA.....................................................................................................................................47
4.3 PEM METODA ZA STRUKTURU MODELA SA IZLAZNOM GREŠKOM (OUTPUT ERROR MODEL).................49
4.5 METODA N4SID....................................................................................................................................52
4.6 ODABIR NAJPOVOLJNIJE METODE.........................................................................................................54
5. MODELIRANJE .....................................................................................................................................61
5.1 BLOK SINHRONE MAŠINE .....................................................................................................................62
5.2 BLOK PARNE TURBINE .........................................................................................................................63
5.2.1 Spregnuti mehaničko električni sistem........................................................................................65
5.3 BRZINSKI REGULATOR .........................................................................................................................69
5.4 REZULTATI SIMULACIJA.......................................................................................................................72
6. ZAKLJUČAK..........................................................................................................................................82
7. PREGLEDNIK KORIŠTENIH SKRAĆENICA I MNEMONIKA....................................................83
8. LITERATURA ........................................................................................................................................85
Elektrotehnički fakultet u Sarajevu, Odsjek za Automatiku i elektroniku 1