IEEE Trans Cybern. 2021 Jun;51(6):3027-3038. doi: 10.1109/TCYB.2019.2926537. Epub 2021 May 18.
This paper addresses the robust stability of recurrent neural networks (RNNs) with time-varying delays and input perturbation, where the time-varying delays include discrete and distributed delays. By employing the new ψ -type integral inequality, several sufficient conditions are derived for the robust stability of RNNs with discrete and distributed delays. Meanwhile, the robust boundedness of neural networks is explored by the bounded input perturbation and L -norm constraint. Moreover, RNNs have a strong anti-jamming ability to input perturbation, and the robustness of RNNs is suitable for associative memory. Specifically, when input perturbation belongs to the specified and well-characterized space, the results cover both monostability and multistability as special cases. It is revealed that there is a relationship between the stability of neural networks and input perturbation. Compared with the existing results, these conditions proposed in this paper improve and extend the existing stability in some literature. Finally, the numerical examples are given to substantiate the effectiveness of the theoretical results.
本文针对时变时滞和输入扰动的递归神经网络(RNN)的鲁棒稳定性问题进行了研究,其中时变时滞包括离散时滞和分布时滞。通过使用新的 ψ 型积分不等式,推导出了具有离散和分布时滞的 RNN 鲁棒稳定性的几个充分条件。同时,通过有界输入扰动和 L -范数约束,研究了神经网络的鲁棒有界性。此外,RNN 对输入扰动具有很强的抗干扰能力,并且 RNN 的鲁棒性适用于联想记忆。具体来说,当输入扰动属于特定且特征明确的空间时,结果涵盖了单稳和多稳两种特殊情况。结果表明,神经网络的稳定性和输入扰动之间存在一定的关系。与现有结果相比,本文提出的这些条件在某些文献的已有稳定性结果的基础上进行了改进和扩展。最后,通过数值示例验证了理论结果的有效性。