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Genetic algorithm approach with frequency selectivity for model order reduction of MIMO systems

Author

Listed:
  • Othman M.K. Alsmadi
  • Zaer S. Abo-Hammour
  • Adnan M. Al-Smadi
  • Dia I. Abu-Al-Nadi

Abstract

A novel genetic algorithm (GA) approach with frequency selectivity advantage for model order reduction (MOR) of multi-input--multi-output (MIMO) systems is presented in this article. Motivated by singular perturbation and other reduction techniques, the new MOR method is formulated using GAs, which can be applied to single-input--single-output (SISO)- or MIMO-type systems. The GA procedure is based on maximizing the fitness function corresponding to the response deviation between the full-order model and the reduced-order model with the option of substructure preservation. The proposed GA-MOR method is compared to the well-known reduction techniques, such as the Schur decomposition balanced truncation, proper orthogonal decomposition (POD) and state elimination through balancing-related frequency-weighted realization in addition to other recent methods. Simulation results validate the superiority and robustness of the new MOR technique as it can search the solution space for almost optimal solutions.

Suggested Citation

  • Othman M.K. Alsmadi & Zaer S. Abo-Hammour & Adnan M. Al-Smadi & Dia I. Abu-Al-Nadi, 2010. "Genetic algorithm approach with frequency selectivity for model order reduction of MIMO systems," Mathematical and Computer Modelling of Dynamical Systems, Taylor & Francis Journals, vol. 17(2), pages 163-181, November.
    • Handle: RePEc:taf:nmcmxx:v:17:y:2010:i:2:p:163-181
    DOI: 10.1080/13873954.2010.540806
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