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Approximation of Subnetwork Models using FrequencyDomain Data 
Abstract 
In this paper, we approximate models of in … In this paper, we approximate models of interconnected
systems that are to be used for decentralized control
design. The suggested approach is based on approximation of
socalled subnetwork models. A subnetwork model is a model
of the interconnected system, as seen from one specific
position
in the network. The simplification is done by using
weighted model reduction, and several approximation
criteria
are given. A new method for weighted model reduction is
used.
The method is based on a combination of known techniques
that use semidefinite programming and frequencydata
samples
of transfer functions. The method is guaranteed to preserve
stability and does not depend strongly on the order of the
original model. This is particularly important for large
interconnected systems. Two examples are given to
illustrate the technique. les are given to
illustrate the technique. +


Authors  Henrik Sandberg, Richard M. Murray + 
ID  2006c + 
Source  Submitted, 2006 Conference on Decision and Control + 
Tag  sm06cdc + 
Title  Approximation of Subnetwork Models using FrequencyDomain Data + 
Type  Conference Paper + 
Categories  Papers 
Modification date This property is a special property in this wiki.

15 May 2016 06:17:41 + 
URL This property is a special property in this wiki.

http://www.cds.caltech.edu/~murray/preprints/sm06cdc.pdf + 
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Approximation of Subnetwork Models using FrequencyDomain Data +  Title 
