一类基于心理作用的SIRS传染病模型

A Class of SIRS Epidemic Model Based on Psychology Effect

根据传染病动力学原理建立一类基于心理作用的SIRS传染病模型.先通过构造Lyapunov函数,利用常微分方程稳定性和极限系统理论,分别获得该模型在无病平衡点和地方病平衡点全局渐近稳定性的充分条件,再通过数值仿真验证所得结论.数值模拟结果表明,心理作用的积极影响在一定程度上能控制传染病的传播与流行.

According to the principle of epidemic dynamics,we established a class of SIRS epidemic model based on psychology effect.The sufficient conditions for the global asymptotic stability of the model at the disease-free equilibrium point and endemic disease equilibrium point were obtained by constructing Lyapunov function,using the stability of ordinary differential equation and the theory of limit system,and then the results were verified by numerical simulation.The results of numerical simulation show that the positive influence of psychology effects can control the spread and prevalence of infectious diseases to a certain extent.