Stability and Hopf Bifurcation Analysis of an(n + m)-Neuron Double-Ring Neural Network Model with Multiple Time Delays

• 作者: XING Ruitao XIAO Min ZHANG Yuezhong QIU Jianlong
• 来源期刊: 系统科学与复杂性学报（英文版）
• 年，卷（期）: 2022,（1）
• 页码范围: 159-178
• 页数: 20页
• 语种: 英文
• DOI: 10.1007/s11424-021-0108-2

摘要

Up till the present moment,researchers have always featured the single-ring neural net-work.These investigations,however,disregard the link between rings in neural networks.This paper highlights a high-dimensional double-ring neural network model with multiple time delays.The neural network has two rings of a shared node,where one ring has n neurons and the other has m + 1 neurons.By utilizing the sum of time delays as the bifurcation parameter,the method of Coates' flow graph is applied to obtain the relevant characteristic equation.The stability of the neural network model with bicyclic structure is discussed by dissecting the characteristic equation,and the critical value of Hopf bifurcation is derived.The effect of the sum of time delays and the number of neurons on the stability of the model is extrapolated.The validity of the theory can be verified by numerical simulations.