A Mixed Method for Large-Scale Systems Modelling using Eigen Spectrum Analysis and Cauer Second Form

摘要

The authors present a mixed method for the reduction of large-scale systems which combines the Eigen spectrum analysis with the Cauer second form. The denominator of the reduced order model/low order system is found by Eigen spectrum analysis while the numerator dynamics is determined by Cauer second form. This method guarantees stability of the reduced model if the original high order system is stable. The method is illustrated by numerical examples.