DUFFING-VAN DER POL-TYPE OSCILLATOR SYSTEM AND ITS FIRST INTEGRALS

被引：9
|
作者：
Feng, Zhaosheng [1 ]
Gao, Guangyue [1 ]
Cui, Jing [1 ]
机构：
[1] Univ Texas Pan Amer, Dept Math, Edinburg, TX 78539 USA
来源：
COMMUNICATIONS ON PURE AND APPLIED ANALYSIS | 2011年 / 10卷 / 05期
关键词：
First integral; Duffing oscillator; van der Pol oscillator; diffeomorphism; Lie symmetry method; Lie point symmetry; prolonged infinitesimal operator; parametric solution; ORDINARY DIFFERENTIAL-EQUATIONS; DE-VRIES EQUATION; HELMHOLTZ OSCILLATOR; INTEGRABILITY; SYMMETRIES;
D O I：
10.3934/cpaa.2011.10.1377
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In this paper, under certain parametric conditions we are concerned with the first integrals of the Duffing-van der Pol-type oscillator system, which include the van der Pol oscillator and the damped Duffing oscillator etc as particular cases. We apply the Lie symmetry method to find two nontrivial infinitesimal generators and use them to construct canonical variables. Through the inverse transformations we obtain the first integrals of the original oscillator system under the given parametric conditions, and some particular cases such as the damped Duffing equation and the van der Pol oscillator system are discussed accordingly.
引用
收藏
页码：1377 / 1392
页数：16
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