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在磁浮列车系统研究领域中,为简化计算许多文献将悬浮控制器等效为弹簧阻尼器。而对该方法的有效性,及其结果的可信度都没有做出进一步的分析。从数学模型上分析了弹簧阻尼器系统与控制系统的本质区别,并从稳定性、动态响应特征以及高频激励响应三个方面讨论了这种区别对系统性能的影响。以国防科大磁悬浮列车为被控对象进行了仿真分析,验证了两者之间的差异,说明弹簧阻尼器与控制器是不等效的。
In the field of maglev train system research, many literatures have simplified the suspension controller as a spring damper to simplify the calculation. However, no further analysis has been done on the effectiveness of the method and the credibility of its results. The essential difference between the spring damper system and the control system is analyzed from the mathematical model. The influence of this difference on the system performance is discussed from the aspects of stability, dynamic response characteristics and high-frequency excitation response. Taking the National Defense University Maglev train as the controlled object, the simulation analysis is carried out, which verifies the difference between the two. It shows that the spring damper and the controller are not equivalent.