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一类比率依赖种群模型在常数收获下的分岔
  • 期刊名称：系统工程学报
  • 时间：0
  • 页码：-
  • 分类：O175[理学—数学;理学—基础数学]
  • 作者机构：[1]东北大学系统科学研究所, [2]东北大学流程工业综合自动化教育部重点实验室, [3]沈阳建筑大学理学院
  • 相关基金：国家自然科学基金资助项目(60574011);; 辽宁省博士启动自然基金资助项目(20052022);; 沈阳市科学技术计划资助项目(1081235-1-00)
  • 相关项目：不确定广义耗散系统的鲁棒性分析与控制
作者： 李宁|张庆灵|孙海义|
关键词： 常数收获, 鞍结点分岔, HOPF分岔, Bogdanov-Takens分岔, constant rate harvesting, saddle node bifurcation, Hopf bifurcation, Bogdanov-Takens bifurcation
中文摘要：

利用微分方程定性理论以及规范型理论研究了一类具有常数收获项的生物模型.首先,考虑常数收获项对该模型非负平衡点的影响,讨论平衡点的稳定性情况.其次,选取常数收获项作为参数,给出系统存在鞍结点分岔、Hopf分岔以及极限环的充分条件.进一步地,考虑双参数分岔,给出系统存在余维2的Bogdanov-Takens分岔的充分条件.结果表明,由于添加了常数收获项,系统具有丰富的动力学行为.最后,通过数值仿真验证了所得结果的正确性.

英文摘要：

This paper investigates a class of biological model with constant rate harvesting by using the qualitative theories of differential equations and theories of normal form.Firstly,considering the effect of constant rate harvesting on the nonnegative equilibria of the model,the problem of stability of the equilibria is discussed.Secondly,choosing the constant rate harvesting as the bifurcation parameter,the sufficient conditions of existence for the saddle node bifurcation,the Hopf bifurcation and the limit cy...

同期刊论文项目
不确定广义耗散系统的鲁棒性分析与控制
期刊论文 80
导数项系数矩阵具有不确定性的广义系统的鲁棒控制
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