Model order reduction of commensurate linear discrete-time fractional-order systems

By Rydel Marek, Stanisławski Rafał, Latawiec Krzysztof J., and Gałek Marcin
IFAC PapersOnLine (2018)

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Abstract

This paper presents an approach to model order reduction of linear time-invariant discrete-time commensurate fractional-order state space systems by means of the Balanced Truncation Approximation and Singular Perturbation Approximation methods. Mathematical formulas for computation of controllability and observability Gramians for the fractional-order systems are derived. This enables an extension of classical SVD-originated model order reduction algorithms to model reduction of discrete-time fractional-order state space systems. Simulation experiment illustrates the efficiency of the introduced methodology.

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Suggested citation

Rydel M., Stanisławski R., Latawiec K., and Gałek M. (2018) Model order reduction of commensurate linear discrete-time fractional-order systems. IFAC PapersOnLine, 51, 536-541.

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