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Finite-time stability of fractional-order nonlinear systems
Zaiyong Feng1,2, Zhengrong Xiang1
1School of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, People's Republic of China.
Abstract:
The paper studies the finite-time stability (FTS) of equilibrium points (EPs) in fractional-order nonlinear systems (FONSs). Classifying the EPs into initial EP and finite-time EP innovatively, equations of the EPs in FONSs are investigated comprehensively, and a unified definition depicting the EPs in the FONSs is proposed. Furthermore, sufficient conditions of the FTS of EPs in FONSs are given. The proposed results are verified with an illustrative example. Thus, different from existing works that declare non-existence of finite-time stable equilibria in FONSs, the existence of finite-time stable EPs in FONSs is confirmed in this paper.
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