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Robust stability analysis of LTI systems with fractional degree generalized frequency variables

  • Cuihong Wang EMAIL logo , Yan Guo , Shiqi Zheng and YangQuan Chen
Published/Copyright: December 31, 2019

Abstract

A novel linear time-invariant (LTI) system model with fractional degree generalized frequency variables (FDGFVs) is proposed in this paper. This model can provide a unified form for many complex systems, including fractional-order systems, distributed-order systems, multi-agent systems and so on. This study mainly investigates the stability and robust stability problems of LTI systems with FDGFVs. By characterizing the relationship between generalized frequency variable and system matrix, a necessary and sufficient stability condition is firstly presented for such systems. Then for LTI systems with uncertain FDGFVs, we present a robust stability method in virtue of zero exclusion principle. Finally, the effectiveness of the method proposed in this paper is demonstrated by analyzing the robust stability of gene regulatory networks.


Dedicated to the memory of late Professor Wen Chen


Acknowledgements

The work described in this paper was fully supported by the National Natural Science Foundation of China under Grant Nos. 61703376, 61703254, 61907027, Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province under Grant No. 2018-25.

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Received: 2019-07-27
Published Online: 2019-12-31
Published in Print: 2019-12-18

© 2019 Diogenes Co., Sofia

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