Multiple asymptotical ω-periodicity of fractional-order delayed neural networks under state-dependent switching
2023
This paper presents theoretical results on multiple asymptotical -periodicity of a state-dependent switching fractional-order neural network with time delays and sigmoidal activation functions. Firstly, by combining the geometrical properties of activation functions with the range of switching threshold, a partition of state space is given. Then, the conditions guaranteeing that the solutions can approach each other infinitely in each positive invariant set are derived. Furthermore, the -asymptotical -periodicity and the convergence of solutions in positive invariant sets are discussed. It is worth noting that the number of attractors increases to from in a neural network without switching. Finally, three numerical examples are given to substantiate the theoretical results.
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