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WANG Hui, SHEN Gang. Small-scale similarity model of maglev-guideway coupling vibration[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 49-56.
Citation: WANG Hui, SHEN Gang. Small-scale similarity model of maglev-guideway coupling vibration[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 49-56.
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Small-scale similarity model of maglev-guideway coupling vibration

  • Institute of Railway and Urban Mass Transit, Tongji University, Shanghai 201804, China

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  • Author Bio:

    WANG Hui(1983-), male, doctoral student, +86-21-69583693, wh053@163.com

    SHEN Gang(1963-), male, professor, PhD, +86-21-69582151, elsg@sh163.net

  • Received Date: 2013-09-18
  • Publish Date: 2014-02-25
    Abstract
  • Simplified as a model composed of single magnet and Bernoulli-Euler beam, the maglevguideway coupling vibration system with 5-state-variable feedback controller was designed to study the dynamics performances of the system in the time and frequency domain. A small-scale model of single magnet-guideway coupling vibration system was established based on the similarity theory, its similarity performances were studied, and the similarity relationship of the dynamics systems was analyzed. Study result shows that the maglev control method, calculating the controller output with the vibration informations of guideway's low order mode and magnet, is effective and can keep the system stable. The step response of the system indicates that the developed controller can stabilize the system in 0.27 swith the overshot 2%. The first 3 order modes can be used to accurately describe the dynamics characteristics of coupling vibration system. For analyzing the lower frequency characteristics of the system, the first 1 order mode is sufficient when the large difference among the lower frequencies exists. The small-scale model obtained according to the similarity theory is coincident with the original model in the dynamics performances.

     

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