磁悬浮系统车轨耦合振动研究

该文首先建立磁悬浮列车系统的车轨耦合模型，为了确保系统的全局稳定，利用状态反馈方法对磁悬浮非线性系统进行精确反馈线性化。分析了在常规反馈控制规律下，磁悬浮列车系统产生车轨耦合振动的原因。由于系统可控，如果对系统采用全状态反馈控制，可以将系统极点设置在任意位置。该文从实际的实验角度出发，考虑到并不是所有的磁悬浮系统的状态都可以获取，因此只能在常规控制规律基础上引入电磁铁的垂向速度作为控制量，实验证明：这一做法对磁悬浮系统的车轨耦合振动起到了很好的抑制作用。最后仿真说明了该文提出的控制方法对抑制磁悬浮系统车轨耦合振动的有效性。

Vehicle-Coupled-Guideway Vibration in Maglev System

The model of vehicle -Coupled- Guideway vibration in maglev system was founded at first in the paper. In order to ensure the global stabilization of the system, the system was linearized with feedback method. The reason of the maglev system vibration was analyzed when the maglev system was controlled by common controller. For the maglev system was controllable, so its pole could be set anywhere by whole state feedback contorl. In fact, not all the state of the maglev system could be gotten directly. So in experiment, based on the common controller, the velocity of the electrical magnet was added to the control. The validity of this method was proved by experiment. At last, the simulation result showed that this method could be applied to the maglev system.