Analysis of the effect of high-speed maglev train controller parameters on the vibration of the vehicle-bridge system

High-speed maglev is more likely to vibrate when suspended in bridge because the bridge is not absolutely rigid and it will deform and vibrate when excited by the electro-magnetic force. The electromagnetic force is generated by the electromagnet driven by the controller. When the controller parameters are not appropriate, the bridge and the car are easily coupled with vibration. To analyze the problem, a dynamic model of the vehicle and bridge for the high-speed maglev train is established. The electromagnetic equation and control system equation of the levitation system is given. Then the influence of different controller parameters on the coupling system is analyzed. Appropriate range of controller parameter k
_p
from 500000 to 2000000, that within this range, k
_d
,k
_c
and ω
_c
have little effect on coupling vibration. When the k
_p
is greater than 2000000, the coupling vibration of the system is large and the performance becomes worse. But increased k
_c
,k
_d
and ω
_c
can suppress vibration.