Vol.4, No 17, 2005 pp. 257-263
UDC 62-55:519.612(045)=20
SUBSPACE IDENTIFICATION FOR THE MODEL
BASED
CONTROLLER DESIGN OF A FUNNEL-SHAPED STRUCTURE
T. Nestorović1,2, H. Köppe1,
U. Gabbert1
1Institut für Mechanik,
Otto-von-Guericke
Universität,
Universitätsplatz 2, D-39106, Magdeburg, Germany
2Faculty of Mechanical Engineering,
University of Niš,
Aleksandra Medvedeva 14, 18000 Niš, Serbia and Montenegro
Abstract. In order to design and apply controller for a
funnel-shaped
structure with attached piezoelectric actuators and sensors the model
of
the structure was identified using the subspace-based system
identification.
Based on the measured input and output signals from the actuators and
sensors,
the frequency response functions of the appropriate actuator-sensor
pairs
were identified and compared with the frequency response functions
obtained
from the model identified using the subspace identification. Results of
the system identification as well as of the control based on the
identified
models are presented in the form of the appropriate time and
frequency
responses.
Key words: subspace based system identification, control of
a funnel- shaped structure
IDENTIFIKACIJA MODELA NA BAZI
PODPROSTORA
MATRICA U
CILJU PROJEKTOVANJA UPRAVLJANJA ZA STRUKTURU OBLIKA LEVKA
U cilju projektovanja i primene upravljanja za strukturu u obliku levka
sa piezoelektričnim aktuatorima i senzorima, identifikovan je model
primenom
identifikacije na bazi podprostora matrica (subspace-based
identification).
Na osnovu merenih ulaznih i izlaznih signala sa aktuatora i senzora,
identifikovani
su frekventni odzivi za odgovarajuće parove aktuatora i senzora i
uporedjeni
sa frekventnim odzivima dobijenim na osnovu modela identifikovanog
primenom
identifikacije na bazi podprostora odgovarajućih matrica. Rezultati
identifikacije
i upravljanja, sprovedenog na osnovu identifikovanih modela, prikazani
su u obliku odgovarajućih vremenskih i frekventnih odziva.
Ključne reči: identifikacija na bazi podprostora matrica,
upravljanje
levkastom strukturom.
