Stability Analysis of Switched Nonlinear Systems With Multiple Time-Varying Delays

This article addresses the stability problem of switched nonlinear systems (SNSs) with multiple time-varying delays (MTVDs) whose subsystems are all unstable. By utilizing a multiple Lyapunov-Krasovskii functionals technique, some stability criteria for SNSs with MTVDs are obtained. To tackle the ch...

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Bibliographic Details
Published in:IEEE transactions on systems, man, and cybernetics. Systems man, and cybernetics. Systems, 2022-06, Vol.52 (6), p.3947-3956
Main Authors: Wang, Zhichuang, Sun, Jian, Chen, Jie
Format: Article
Language:English
Subjects:
Delay effects
Delays
Functionals
Fuzzy systems
Liapunov functions
Mathematical analysis
Mathematical models
Multiple time-varying delays (MTVDs)
Nonlinear systems
Numerical stability
Power system stability
stability
Stability analysis
Stability criteria
Subsystems
switched nonlinear systems (SNSs)
Switches
unstable modes
Upper bounds
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Summary:This article addresses the stability problem of switched nonlinear systems (SNSs) with multiple time-varying delays (MTVDs) whose subsystems are all unstable. By utilizing a multiple Lyapunov-Krasovskii functionals technique, some stability criteria for SNSs with MTVDs are obtained. To tackle the challenge of finding appropriate Lyapunov functions, we introduce Takagi and Sugeno (T-S) fuzzy models and present stability criteria for switched T-S fuzzy systems with MTVDs. Moreover, a novel switching signal is developed to eliminate the effect of the increment energy of Lyapunov functions for all unstable modes. The upshots of our result are that: 1) it allows the upper bound of the derivatives of Lyapunov functionals to be mode-dependent functions which can be positive or negative and 2) it also improves upon the existing results by removing several restrictive conditions. Finally, the effectiveness of our method is validated through numerical simulations.
ISSN:2168-2216
2168-2232
DOI:10.1109/TSMC.2021.3080278