Bifurcation and chaos analysis of a nonlinear electromechanical coupling relative rotation system

被引:10
|
作者
Liu Shuang [1 ,2 ]
Zhao Shuang-Shuang [1 ]
Sun Bao-Ping [1 ]
Zhang Wen-Ming [1 ,2 ]
机构
[1] Yanshan Univ, Key Lab Ind Comp Control Engn Hebei Prov, Qinhuangdao 066004, Peoples R China
[2] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao 066004, Peoples R China
基金
中国国家自然科学基金;
关键词
relative rotation; electromechanical coupling; Hopf bifurcation; chaos; DYNAMICAL-SYSTEM; HOPF-BIFURCATION; TIME-DELAY; STABILITY;
D O I
10.1088/1674-1056/23/9/094501
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Hopf bifurcation and chaos of a nonlinear electromechanical coupling relative rotation system are studied in this paper. Considering the energy in air-gap field of AC motor, the dynamical equation of nonlinear electromechanical coupling relative rotation system is deduced by using the dissipation Lagrange equation. Choosing the electromagnetic stiffness as a bifurcation parameter, the necessary and sufficient conditions of Hopf bifurcation are given, and the bifurcation characteristics are studied. The mechanism and conditions of system parameters for chaotic motions are investigated rigorously based on the Silnikov method, and the homoclinic orbit is found by using the undetermined coefficient method. Therefore, Smale horseshoe chaos occurs when electromagnetic stiffness changes. Numerical simulations are also given, which confirm the analytical results.
引用
收藏
页数:7
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