本文首先讨论了两类具有一般意义的线性自治中立型时滞微分系统特征根链的分布情况,并且给出特征根链的逼近链拟合曲线,然后重点讨论多时滞退化中立型微分系统的特征根链分布,由此得到多时滞退化中立型微分系统指数稳定的条件.
This paper firstly discussed the distribution of characteristic roots of two types of representative linear autonomy neutral delay differential systems,then given the fitting curve of appromate characteristic roots about the characteristic roots.Finally,we focused on the distribution of characteristic roots of singular neutral differential delay systems.Under a condition,we can obtain the conditions of exponential stability of singular neutral differential differential delay systems.