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System reduction using factor division algorithm and eigen spectrum analysis. (English) Zbl 1118.93028
Summary: A mixed method is proposed which combines the factor division algorithm with the eigen spectrum analysis for deriving reduced order models of high-order linear time invariant systems. Pole centroid and system stiffness of both original and reduced order systems remain same in this method. The proposed method guarantees stability of the reduced model if the original high-order system is stable and is comparable in quality with the other well known existing methods of order reduction. The method is illustrated by four numerical examples including one example of a multivariable system.

MSC:
93B60 Eigenvalue problems
93B20 Minimal systems representations
93B55 Pole and zero placement problems
Software:
SLICOT
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