Improvement on fuzzy-model-based stability criteria of nonlinear networked control systems

This paper is concerned with an improvement on fuzzy-model-based stability criteria of nonlinear networked control systems (NCSs) with time-varying transmission delays and transmission intervals. The real-time distribution of input delays is taken into account and modeled as a dependent and nonidentically distributed process, which leads to a randomly switched Takagi-Sugeno (T-S) fuzzy model with multiple input-delay subsystems for the nonlinear NCSs. Based on an improve-ed Lyapunov-Krasovskii method, which appropriately exploits the real-time distribution of input delays in estimating cross-product integral terms and the characteristics of T-S fuzzy model, new sufficient conditions are derived for the deterministic asymptotical stability of the overall systems. Numerical examples are presented to substantiate the effectiveness and advantage of our results.

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