Influence of Different Methods Obtaining Air-Gap Change Rate on the Stability of Electromagnetic Suspension System in Maglev

The electromagnetic suspension system is the most important subsystem in maglev. The feedback of air-gap change rate is very important for the stability of the system. Air-gap change rate can be achieved four ways: using analog differentiator with filters, analog low-noise differentiator, digital differentiator with filters, and digital low-noise differentiator. In this paper, an electromagnetic suspension system is modeled and simulated by Matlab using these four methods. Experiments are implemented using the latter three methods. According to the waveforms obtained from the simulations and experiments, the advantages and weaknesses of the different methods are pointed out. The results indicate that the digital low-noise differentiator is the most relatively economical and practical method in the electromagnetic suspension system.

• Record URL:
  • https://doi.org/10.1061/9780784413159.246
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784413159
• Supplemental Notes:
  • © 2013 American Society of Civil Engineers
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Dong, Jinwen
  • Liu, Fang
  • Zhang, Kunlun
• Conference:
  • Fourth International Conference on Transportation Engineering
  • Location: Chengdu , China
  • Date: 2013-10-19 to 2013-10-20
• Publication Date: 2013-10

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 1689-1697
• Monograph Title: ICTE 2013: Safety, Speediness, Intelligence, Low-Carbon, Innovation

Subject/Index Terms

• TRT Terms: Experiments; Magnetic levitation; Simulation; Stability (Mechanics)
• Uncontrolled Terms: Air gap; Differentiators
• Subject Areas: Design; Railroads; Vehicles and Equipment; I22: Design of Pavements, Railways and Guideways; I90: Vehicles;

Filing Info

• Accession Number: 01517460
• Record Type: Publication
• ISBN: 9780784413159
• Files: TRIS, ASCE
• Created Date: Mar 8 2014 5:00PM