Robust Stability of Polynomials: New Approach |
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| Authors: | N E Mastorakis |
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| Institution: | (1) Hellenic Naval Academy, Terma Hatzikyriakou, Piraeus, Greece |
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| Abstract: | The problem of the robust stability of a Hurwitz polynomial which is the characteristic polynomial of a discrete-time linear time-invariant system is investigated. A new approach based on the Rouché theorem of classical complex analysis is adopted. An interesting sufficient condition for robust stability is derived. Three examples are included to support the theoretical result. |
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| Keywords: | Polynomial theory robustness Kharitonov theorem stability Hurwitz polynomials inverse Kharitonov problem Rouché theorem |
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