College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan, China.
Sensors (Basel). 2011;11(7):7204-18. doi: 10.3390/s110707204. Epub 2011 Jul 14.
This paper introduces in brief the traction system of a permanent magnet electrodynamic suspension (EDS) train. The synchronous traction mode based on long stators and track cable is described. A speed and position detection system is recommended. It is installed on board and is used as the feedback end. Restricted by the maglev train's structure, the permanent magnet electrodynamic suspension (EDS) train uses the non-contact method to detect its position. Because of the shake and the track joints, the position signal sent by the position sensor is always aberrant and noisy. To solve this problem, a linear discrete track-differentiator filtering algorithm is proposed. The filtering characters of the track-differentiator (TD) and track-differentiator group are analyzed. The four series of TD are used in the signal processing unit. The result shows that the track-differentiator could have a good effect and make the traction system run normally.
本文简要介绍了一种永磁电动悬浮（EDS）列车的牵引系统。介绍了基于长定子和轨道电缆的同步牵引方式。推荐了一种速度和位置检测系统。它安装在列车上，作为反馈端。受磁浮列车结构的限制，永磁电动悬浮（EDS）列车采用非接触式方法检测其位置。由于列车的晃动和轨道接头，位置传感器发出的位置信号总是存在异常和噪声。为了解决这个问题，提出了一种线性离散轨道微分滤波算法。分析了轨道微分器（TD）和轨道微分器组的滤波特性。在信号处理单元中使用了四个系列的 TD。结果表明，轨道微分器能够产生良好的效果，使牵引系统正常运行。
