J4 ›› 2013, Vol. 51 ›› Issue (02): 229-232.

• 数学 • 上一篇    下一篇

解Duffing方程周期解的Levenberg-Marquardt方法

姜志侠, 李延忠, 李军, 孟品超, 尹伟石   

  1. 长春理工大学 理学院应用数学系| 长春 130022
  • 收稿日期:2012-07-04 出版日期:2013-03-26 发布日期:2013-03-27
  • 通讯作者: 李延忠 E-mail:lyz@cust.edu.cn

LevenbergMarquardt Method to Find |Periodic Solutions of Duffing Equations

JIANG Zhixia, LI Yanzhong, LI Jun, MENG Pinchao, YIN Weishi   

  1. Department of Applied Mathematics, College of Science, Changchun University ofScience and Technology, Changchun 130022, China
  • Received:2012-07-04 Online:2013-03-26 Published:2013-03-27
  • Contact: LI Yanzhong E-mail:lyz@cust.edu.cn

摘要:

先把求解微分方程的周期解问题转化为无约束最优化问题, 再利用无约束最优化问题的最优性条件及Levenberg-Marquardt方法求解了满足限制共
振条件下的一类Duffing方程的周期解. 数值计算结果表明了方法的有效性.

关键词: 微分方程; 周期解; Levenberg-Marquardt方法

Abstract:

We converted the periodic solution problem of solving differential equations to the unconstrained optimization problem. With the help of  the optimality conditions of unconstrained optimization problem, we applied the LevenbergMarquardt method to finding the periodic solutions of a class of Duffing equations under  restrict resonant conditions.

Key words: differential equation, periodic solution, LevenbergMarquardt method

中图分类号: 

  • O241