| 两级悬浮EMS型磁悬浮控制系统的非线性动力学特性 |
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| 引用本文： | 武建军, 郑晓静, 周又和, 何丽红. 两级悬浮EMS型磁悬浮控制系统的非线性动力学特性[J]. 固体力学学报, 2003, 24(1): 68-74. doi: 10.3969/j.issn.0254-7805.2003.01.010 |
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| 作者姓名： | 武建军 郑晓静 周又和 何丽红 |
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| 作者单位： | 兰州大学力学系,兰州,730000; 兰州大学力学系,兰州,730000; 兰州大学力学系,兰州,730000; 兰州大学力学系,兰州,730000；兰州大学经济管理学院,兰州,730000 |
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| 基金项目： | 国家自然科学基金 (10 13 2 0 10 )，国家杰出青年科学基金 (1972 52 0 7)，国家教委高校博士点专项基金，国家科学基金重点 (10 13 2 0 10 )项目资助 |
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| 摘 要： | 在考虑二级悬浮弹簧的非线性特性的基础上,建立了两级悬浮EMS型磁悬浮控制系统的非线性动力学模型,给出了控制参数G1、G2的稳定性条件.进一步讨论了该磁悬浮系统在外界激励下的分叉行为及混沌动力特性,并利用Poincare映射、功率谱分析及最大Lyapunov指数等混沌运动的统计特征描述了该状态下控制系统的混沌运动特性.
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| 关 键 词： | 磁悬浮 非线性 动力特性 混沌 |
| 修稿时间： | 2001-04-02 |
THE NONLINEAR DYNAMICAL CHARACTERISTICS OF EMS MAGLEV CONTROL SYSTEM WITH TWO SUSPENSIONS |
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| THE NONLINEAR DYNAMICAL CHARACTERISTICS OF EMS MAGLEV CONTROL SYSTEM WITH TWO SUSPENSIONS[J]. Chinese Journal of Solid Mechanics, 2003, 24(1): 68-74. doi: 10.3969/j.issn.0254-7805.2003.01.010 |
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| Authors: | Wu Jianjun Zheng Xiaojing Zhou Youhe He Lihong |
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| Affiliation: | Wu Jianjun1 Zheng Xiaojing1 Zhou Youhe1 He Lihong 1,2 |
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| Abstract: | The nonlinear dynamical model of EMS maglev control system with two suspensions is presented based on the nonlinear characteristics of the spring between the two suspensions. Conditions to make the system stable are given for the control parameters G 1 and G 2. When this system is under the external excitation, the bifurcation behavior and the chaos characteristics are also discussed. Statistical methods to describe the chaotic motion such as Poincare mapping, power spectral analysis and the largest Lyapunov exponent are used to demonstrate the chaotic characteristics of the maglev control system. |
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| Keywords: | magnetic levitation (maglev) nonlinear dynamic characteristics chaos |
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