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  4. Distributed identification of spatially-distributed systems based on finite element modelling
 
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Distributed identification of spatially-distributed systems based on finite element modelling

Publikationstyp
Conference Paper
Date Issued
2015-02-08
Sprache
English
Author(s)
Liu, Qin  
Gross, Joseph R.  
Werner, Herbert  
Institut
Regelungstechnik E-14  
TORE-URI
http://hdl.handle.net/11420/7374
Journal
Proceedings of the IEEE Conference on Decision & Control  
Volume
54rd IEEE Conference on Decision and Control, CDC 2015
Start Page
1230
End Page
1235
Article Number
7402379
Citation
IEEE Conference on Decision and Control,CDC: 7402379 (2015-02-08)
Contribution to Conference
54th IEEE Conference on Decision and Control, CDC 2015  
Publisher DOI
10.1109/CDC.2015.7402379
Scopus ID
2-s2.0-84961997820
In structural engineering, the application of the finite element (FE) method to model a spatially-distributed system exploits physical insight into the plant dynamics and often results in a lumped model of large order, which is undesirable or even impossible for model-based controller design. This paper bridges the gap between FE modelling and distributed identification by proposing a novel identification technique to extract a distributed model from an FE model for both parameter-invariant and parameter-varying systems. The obtained models define the system dynamics on subsystems and capture the interacted behaviour among neighbouring sub-systems. The proposed approach is tested on an experimental beam structure equipped with an array of piezo actuators and sensors, and the model accuracy is compared to that of black-box identification.
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