Next Article in Journal
Symmetry Analysis of an Interest Rate Derivatives PDE Model in Financial Mathematics
Previous Article in Journal
Forecasting Efficient Risk/Return Frontier for Equity Risk with a KTAP Approach—A Case Study in Milan Stock Exchange
Open AccessArticle

A New Strategy for Improving the Tracking Performance of Magnetic Levitation System in Maglev Train

College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China
*
Author to whom correspondence should be addressed.
Symmetry 2019, 11(8), 1053; https://doi.org/10.3390/sym11081053
Received: 18 July 2019 / Revised: 9 August 2019 / Accepted: 13 August 2019 / Published: 16 August 2019
The maglev train is a whole new method of transportation without wheels, consisting of 20 groups of symmetry suspension units. The magnetic levitation system plays a major role in suspending the maglev train stably and following the track quickly with the desired gap. However, vertical track irregularity in the maglev train line has a dreadful effect on the tracking performance of the magnetic levitation system. The investigations carried out by our team have revealed that the fluctuation of the suspension gap becomes more and more serious with increases in running speed. In this paper, a mathematical model with consideration of vertical track irregularity is established. In order to overcome and suppress the fluctuation of the suspension gap, we propose a new strategy which includes installing an accelerometer on the electromagnet to address this problem. This strategy has already been successfully implemented and applied to the suspension controller for a magnetic levitation system in the Changsha maglev express. Real operation data indicates the tracking performance of the magnetic levitation system was obviously improved. View Full-Text
Keywords: maglev train; symmetry; magnetic levitation system; vertical track irregularity; tracking performance; strategy maglev train; symmetry; magnetic levitation system; vertical track irregularity; tracking performance; strategy
Show Figures

Graphical abstract

MDPI and ACS Style

Zhai, M.; Long, Z.; Li, X. A New Strategy for Improving the Tracking Performance of Magnetic Levitation System in Maglev Train. Symmetry 2019, 11, 1053.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop