一种新型磁悬浮线路设计方案及悬浮控制方法

针对磁悬浮列车系统的车轨耦合振动问题,提出一种新型的磁悬浮轨道线路设计方案.为研究该方案的可行性,以单铁悬浮系统为研究对象,搭建了单铁系统在新型轨道线路上的车轨耦合振动数学模型,利用状态观测器,将磁轨的振动状态引入控制系统,采用状态反馈的方法设计出控制策略,分析了磁浮线路中各主要参数对系统稳定性的影响.结果表明,所提出的控制方法能够在忽略水泥梁的阻尼情况下依然保持系统的稳定;新型磁悬浮线路中电磁铁的响应与电磁铁相对于水泥梁的位置无关,易于控制器的设计及车轨耦合问题的彻底解决;增大磁轨的质量和减小磁轨垫板刚度有利于系统的稳定.

A New Design of the Maglev Line System and Study on the Control Strategy

For solution of the vehicle-guideway coupling vibration in the maglev system, a new structure of the maglev line system was proposed. With the aim to verify the feasibility of the scheme, a numerical model of the single magnet suspension system on the new line was founded. Using the state observer developed in this paper, the magnetic track's vibration states were introduced to the control system, and a controller was proposed with the state feedback method. The impacts of the main parameters of the new maglev line were investigated in the end. The results shows that the control method can maintain the stability of the maglev system even the cement beam has no damp; The response of magnet has nothing to do with the relative position between the magnet and the cement beam, which makes the design of the controller and the solution of the vehicle-guideway coupling vibration easy; in addition, increasing of the track mass and decreasing of the track pad stiffness are also conductive to the system stability.