Experimental Study of Magnetic Levitation Vehicle System Based on Flexible Levitation Control Strategy

Abstract

AbstractCoupling vibration between maglev vehicle and track can easily occur when maglev train levitate on a light or low stiffness track beam. To overcome this, track beam nowadays always got big mass and stiffness which directly result in massive increasing of construction cost of maglev line. It would be a much more economical way to solve this vibration problem by improving levitation control strategy. In this paper flexible levitation control strategy and traditional rigid levitation control strategy are tested on a small scale magnet-track beam coupling test rig. For magnetic levitation system, because of the strong nonlinear characteristic, test rig study is more accuracy than computer simulation. The test rig is designed based on similarity theory and have one magnet and one simply supported track beam. Results show that comparing with rigid levitation control strategy, flexible levitation controller can make the system more stable. Coupling vibration can be actively decreased under flexible control strategy.KeywordsCoupling vibrationMaglev trainLevitation control strategyTrack vibration