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具有时滞的尼科尔森果蝇方程中Neimark-Sacker分岔的混合控制

Hybrid control of the Neimark-Sacker bifurcation in a delayed Nicholson's blowflies equation.

作者信息

Wang Yuanyuan, Wang Lisha

机构信息

College of Science, China University of Petroleum (East China), Qingdao, 266580 P.R. China.

School of Science, Qingdao Technological University, Qingdao, 266033 P.R. China.

出版信息

Adv Differ Equ. 2015;2015:306. doi: 10.1186/s13662-015-0640-2. Epub 2015 Oct 6.

Abstract

In this article, for delayed Nicholson's blowflies equation, we propose a hybrid control nonstandard finite-difference (NSFD) scheme in which state feedback and parameter perturbation are used to control the Neimark-Sacker bifurcation. Firstly, the local stability of the positive equilibria for hybrid control delay differential equation is discussed according to Hopf bifurcation theory. Then, for any step-size, a hybrid control numerical algorithm is introduced to generate the Neimark-Sacker bifurcation at a desired point. Finally, numerical simulation results confirm that the control strategy is efficient in controlling the Neimark-Sacker bifurcation. At the same time, the results show that the NSFD control scheme is better than the Euler control method.

摘要

在本文中,针对延迟的尼科尔森绿头苍蝇方程,我们提出了一种混合控制非标准有限差分(NSFD)格式,其中利用状态反馈和参数扰动来控制Neimark - Sacker分岔。首先,根据霍普夫分岔理论讨论了混合控制延迟微分方程正平衡点的局部稳定性。然后,对于任意步长,引入一种混合控制数值算法以在期望点处产生Neimark - Sacker分岔。最后,数值模拟结果证实了该控制策略在控制Neimark - Sacker分岔方面是有效的。同时,结果表明NSFD控制格式比欧拉控制方法更好。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/778e/4762134/335db2679c89/13662_2015_640_Fig1_HTML.jpg

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