Abstract
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.
Highlights
In 1814, the first steam locomotive was invented by George Stephenson, renowned as the “Father of Railways”
We propose a new strategy by installing an accelerometer on the with the F-type track at some stages
When the maglev train passes through the vertical curve, the tracking performance of the magnetic levitation system is dictated by the radius of circular curve r and the angle of slope α.the tracking performance of the magnetic levitation system in the different radiuses of circular curve and angles of slope need to be further analysis, calculation and verification
Summary
In 1814, the first steam locomotive was invented by George Stephenson, renowned as the “Father of Railways”. It electromagnetic force forceto toachieve achieveactive activesuspension suspensionand andruns runsthe the train using a linear motor It completely abandons thewheel-rail wheel-railrelationship relationshipand andachieves achievesnon-contact non-contactmotion, motion, which which not eliminates friction friction to reduce noise and vibration, and allows the maglev train to travel through buildings on viaducts smoothly and quietly. The structure structure of the magnetic levitation system in the medium-low speed maglev train. Because of the symmetry of the magnetic levitation system in medium-low speed maglev trains, the mathematical of single established. If maglev all factors are Because of themodel symmetry of the themagnetic magneticlevitation levitationsystem systemisin ineasily medium-low speed trains, magnetic levitation system medium-low speed maglev trains, taken into account, the order of the whole model will be very high, which is not conducive to.
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