On MIMO model reduction by the weighted equation–error approach

@article{Krajewski2007OnMM,
  title={On MIMO model reduction by the weighted equation–error approach},
  author={Wieslaw Krajewski and Umberto Viaro},
  journal={Numerical Algorithms},
  year={2007},
  volume={44},
  pages={83-98}
}
The paper deals with the problem of approximating a stable continuous-time multivariable system by minimizing the L 2-norm of a weighted equation error. Necessary and sufficient conditions of optimality are derived, and the main properties of the optimal reduced-order models are presented. Based on these conditions and properties, two efficient procedures for generating approximants that retain different numbers of Markov parameters and time moments are suggested and applied to benchmark… CONTINUE READING

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