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Optimal mode decomposition for high dimensional systems

Author(s):

P.J. Goulart, A. Wynn, D. Pearson
Conference/Journal:

IEEE Conference on Decision and Control
Abstract:

In this paper we present a numerical method for solving a certain rank-constrained matrix optimization problem. This problem is of particular interest for problems in which one wishes to compute a low-rank approximation of the dynamics of a linear system of extremely high state dimension. Our results can be interpreted as identifying a low-dimensional subspace of a high dimensional system in which the projected state trajectories of the system can be best described. In order to obtain these results, we consider the general problem of minimizing the difference in Frobenius norm between two data matrices, where one of the terms is multiplied by a matrix of restricted rank with identical left and right images. This problem is highly non-convex in general, but can be solved using a technique based on optimization on the Grassman manifold.



For a PDF version and example code, click the download link on the right hand side of this page. --------------->

For an application of the OMD method to fluid systems, go here.

Year:

2012
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@InProceedings { GouWyn:2012:IFA_4092,
    author={P.J. Goulart and A. Wynn and D. Pearson},
    title={{Optimal mode decomposition for high dimensional systems}},
    booktitle={IEEE Conference on Decision and Control},
    pages={},
    year={2012},
    address={},
    month=dec,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=4092}
}
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