气动升力下磁浮车辆非线性响应研究
Nonlinear Dynamics of Malev Vehicle under Aerodynamic Lift
查看参考文献18篇
文摘
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磁浮列车在高速运行时受到的气动升力包含定常分量和非定常波动量,而非定常气动升力在某种程度上可以视为周期扰动。建立考虑非线性电磁力的磁浮系统二级悬挂的模型,推导了控制方程。利用增量谐波平衡法求解非线性方程,对考虑定常气动升力和周期性非定常气动升力条件下的磁浮系统非线性响应特性进行分析。开展了线性和非线性模型对比、控制增益参数和气动力系数影响规律分析。结果表明,采用PD控制器时,周期扰动的气动力会使得车辆振动中心发生偏移,反馈控制参数对振动偏移具有较大影响。 |
其他语种文摘
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The aerodynamic lift force of maglev train at high speed includes the steady component and the unsteady fluctuation component, and the unsteady aerodynamic lift force can be regarded as periodic disturbance. A two-stage suspension model of a maglev system with nonlinear electromagnetic force is established and the governing equation is derived. The nonlinear response characteristics of the maglev system considering steady and periodic unsteady aerodynamic lift are analyzed by the incremental harmonic balance method. The comparison of linear and nonlinear models, the analysis of the influence law of control gain parameters and gas dynamic coefficient are carried out. The results show that when PD controller is used, the aerodynamic force of periodic disturbance will cause the vehicle vibration center to shift, and the feedback control parameters have a great influence on the vibration shift. |
来源
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机械工程学报
,2021,57(14):223-231 【核心库】
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DOI
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10.3901/JME.2021.14.223
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关键词
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磁浮列车
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气动升力
;
增量谐波平衡法
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反馈控制
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非线性响应
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地址
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1.
中国科学院力学研究所, 北京, 100190
2.
中国科学院大学工程科学学院, 北京, 100049
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0577-6686 |
学科
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力学 |
基金
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国家自然科学基金
;
国家重点研发计划
;
中科院B类先导
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文献收藏号
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CSCD:7087027
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