Abstract
The elementary fractional-order models are the extension of first and second order models which have been widely used in various engineering fields. Some important properties of commensurate or a few particular kinds of non-commensurate elementary fractional-order transfer functions have already been discussed in the existing studies. However, most of them are only available for one particular kind elementary fractional-order system. In this paper, the stability and resonance analysis of a general kind non-commensurate elementary fractional-order system is presented. The commensurate-order restriction is fully released. Firstly, based on Nyquist’s Theorem, the stability conditions are explored in details under different conditions, namely different combinations of pseudo-damping (ζ) factor values and order parameters. Then, resonance conditions are established in terms of frequency behaviors. At last, an example is given to show the stable and resonant regions of the studied systems.
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Zhang, S., Liu, L., Xue, D. et al. Stability and Resonance Analysis of a General Non-Commensurate Elementary Fractional-Order System. Fract Calc Appl Anal 23, 183–210 (2020). https://doi.org/10.1515/fca-2020-0007
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DOI: https://doi.org/10.1515/fca-2020-0007