计算物理 ›› 2014, Vol. 31 ›› Issue (5): 625-630.

• 论文 • 上一篇    

两阶段脉冲控制螺旋波的数值模拟

杨翠云1,2, 刘海英2, 唐国宁1   

  1. 1. 广西师范大学物理科学与技术学院, 广西 桂林 541004;
    2. 桂林师范高等专科学校物理与工程技术系, 广西 桂林 541001
  • 收稿日期:2013-09-15 修回日期:2014-01-24 出版日期:2014-09-25 发布日期:2014-09-25
  • 通讯作者: 唐国宁,E-mail:tangguoning@mailbox.gxnu.edu.cn;刘海英,E-mail:1550682352@qq.com
  • 作者简介:杨翠云(1972-),女,广西桂林,副教授,硕士,主要从事非线性物理研究,E-mail:yangcuiyun_gl@foxmail.com
  • 基金资助:
    国家自然科学基金(11165004);广西教育厅科研项目(201106LX699)资助项目

Simulation on Control of Spiral Wave by Two-stage Pulse Force

YANG Cuiyun1,2, LIU Haiying2, TANG Guoning1   

  1. 1. College of Physical Science and Technology, Guangxi Normal University, Guilin 541004, China;
    2. Department of Physics and Engineering Technology, Guilin Normal College, Guilin 541001, China
  • Received:2013-09-15 Revised:2014-01-24 Online:2014-09-25 Published:2014-09-25

摘要: 提出两种两阶段的螺旋波控制方法,第一阶段用正相脉冲力作用快变量,第二阶段用反相脉冲力作用快变量或用正相脉冲力作用慢变量,用修改后的Bär模型进行数值模拟,结果表明:两阶段的脉冲控制方法比单阶段控制方法更有效地控制螺旋波,作用力可以减少到后者力大小的38%~55%.结果建议,可以通过两阶段控制螺旋波的方法改进心脏电除颤.

关键词: 可激发介质, 螺旋波, 脉冲控制

Abstract: Modified Bär model is used to study suppression of spiral wave. Methods of suppressing spiral wave by two-stage pulse force control are proposed. In the first stage,fast variable of the model is acted by a positive rectangular pulse force. In the second stage,direction of force is changed to the opposite or the force is acted on the slow variable. It shows that two-stage pulse control method is more efficient than one-stage method,and magnitude of the force is 38%~55% of the latter. It suggests that two-stage method of control of spiral wave can improve defibrillation efficiency.

Key words: excitable medium, spiral wave, pulse control

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