Comments on "Robust Stability and Stabilization of Fractional-Order Interval Systems With the Fractional Order alpha: The 0 < alpha < 1 Case"

Aguiar B; Gonzalez T; Bernal M

IEEE Transactions on Automatic Control, Vol.60, No.2, 582-583, 2015

DOI10.1109/TAC.2014.2332711 Export Citation

Comments on "Robust Stability and Stabilization of Fractional-Order Interval Systems With the Fractional Order alpha: The 0 < alpha < 1 Case"

Aguiar B, Gonzalez T, Bernal M

This note considers the work entitled "Robust Stability and Stabilization of Fractional-Order Interval Systems with the Fractional Order alpha: The 0 < alpha < 1 Case" by Lu and Chen, where the authors meant to provide sufficient and necessary conditions for stability of fractional-order linear-time-invariant interval systems. As this note proves, conditions are only sufficient, since necessity relies unsuitably on the certain case. An example is provided.