A study on a vertical transport system consisting of coreless linear synchronous drive and magnetic suspension with novel arrangement of permanent magnets

空心杯线性同步驱动与新型永磁体排列磁悬浮垂直运输系统研究

基本信息

批准号：
15560237
负责人：
KOSEKI Takafumi
金额：
$ 2.24万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

The researcher has proposed the new concept of magnetically suspended vertical transport system with a coreless linear synchronous motor. He calculated and compared characteristics of different alternative designs of vertical linear synchronous motors with mover consisting of Halbach permanent magnet array in the first fiscal year. He selected a design of good characteristics as well as easy-to build structure, e.g., appropriate magnet forms and amount of necessary permanent magnet from the alternative designs. After building a test bench, he designed the levitation controller and tested the magnetic levitation system. He also introduced observer-based levitation control and verified its advantageous feature in comparison with classical control schemes. There were, however, also technical problems of relatively strong internal stress in the Halbach array, which results in the difficulty in selection of its mechanical support. Also the coreless armature side had problems of serious electromagnetic emission, which was harmful for sensors and signal transmission of its control system. He applied common-mode filter technique to suppress this EMI-problem, but this effort was not completely successful. The substantial strategies to this problem is :(1)application of power source of the linear synchronous drive with less noise emission, and (2)redesign of cabling configuration with more electromagnetic immunity.He investigated also position detection method suitable for the vertical derive, and simplified position sensing using a dual sample-rate digital observer. Although he has given up the experimental verification of lateral drive, the validity of the drive concept in both vertical and lateral directions has been verified through simulation results.

研究人员提出了具有无矫正线性同步电动机的磁悬浮垂直传输系统的新概念。他计算并比较了第一会计年度垂直线性同步电动机的不同替代设计的特征，其搬运工由Halbach永久磁铁阵列组成。他选择了良好特征以及易于构建结构的设计，例如，从替代设计中选择了适当的磁铁形式和必要的永久磁铁。构建测试台后，他设计了悬浮控制器并测试了磁性悬浮系统。他还引入了基于观察者的悬浮控制，并与经典控制方案相比验证了其优势功能。但是，在HALBACH阵列中，还存在相对强烈的内部压力的技术问题，这导致很难选择其机械支持。同样，无芯电枢侧也存在严重的电磁发射问题，这对传感器和信号的控制系统有害。他应用了共同模式过滤技术来抑制这种EMI问题，但是这项工作并不是完全成功的。解决此问题的实质策略是：（1）使用噪声发射较小的线性同步驱动器的电源源，以及（2）使用更多电磁免疫的电缆配置重新设计。尽管他已经放弃了横向驱动的实验验证，但通过仿真结果验证了垂直和横向方向上驱动概念的有效性。