Title :
Integrated modelling and parameter estimation: an LFT-Modelica approach
Author :
Donida, Filippo ; Romani, Carlo ; Casella, Francesco ; Lovera, Marco
Author_Institution :
Dipt. di Elettron. e Inf., Politec. di Milano, Milan, Italy
Abstract :
Linear Fractional Transformations (LFTs) are a widely used modelling framework in modern control and identification. Deriving such models from physical first principles is a non-trivial and often error-prone process, if carried out manually. In this paper a new approach to reduced-order LFT modelling and identification starting from equation-based, object-oriented (O-O) descriptions of the plant (formulated using the Modelica language) and experimental data are presented. This approach allows to reduce the gap between user-friendly model representations, based on object diagrams with physical connections, block diagrams with signal connections, and generic differential-algebraic models, and the use of advanced LFT based identification and control techniques.
Keywords :
differential algebraic equations; identification; nonlinear control systems; parameter estimation; reduced order systems; control techniques; integrated modelling; linear fractional transformations; modelica language; object-oriented language; parameter estimation; reduced order LFT identification; reduced order LFT modelling; Automatic control; Control system analysis; Differential equations; Mathematical model; Nonlinear control systems; Nonlinear equations; Object oriented modeling; Parameter estimation; Signal processing; Standards organizations;
Conference_Titel :
Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3871-6
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2009.5400586