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Description
With an operating speed of over 500 km/h and large levitation gap of over 100 mm, electrodynamic suspension (EDS) trains have drawn extensive attention in the railway industry due to these innate merits. The operating performance of the EDS train is strongly affected by the self-excited vibration caused by the varying magnetic field and track irregularity. Being the emphasis of this paper, vibration Control is essential therefore to improve operating performance. Various control methods such as pole configuration, hysteresis-advance adjustment and speed feedback were adopted in this paper. Moreover, the active controller based on pole configuration and hysteresis-advance adjustment as well as the semi-active controller named skyhook damper based on speed feedback was specially designed for EDS system. Limited by the unknown distribution of track magnetic field, only the track irregularity was employed as the excitation source imposed to above controllers. The obtained results show that the above active and semi-active controllers designed for EDS system can effectively suppress the self-excited vibration. Potential applications of these controllers could be expected in the future design of control system for EDS train.
Key words: electrodynamic suspension (EDS) train, self-excited vibration, active controller, skyhook damper
