International Journal of applied mathematics and computer science

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Paper details

Number 3 - September 2012
Volume 22 - 2012

Equivalent descriptions of a discrete-time fractional-order linear system and its stability domains

Piotr Ostalczyk

Two description forms of a linear fractional-order discrete system are considered. The first one is by a fractional-order difference equation, whereas the second by a fractional-order state-space equation. In relation to the two above-mentioned description forms, stability domains are evaluated. Several simulations of stable, marginally stable and unstable unit step responses of fractional-order systems due to different values of system parameters are presented.

fractional calculus, linear discrete-time system, stability domain