The invention discloses a magnetic-levitation train-bridge self-induced vibration restraining method introducing bridge vibration speed. Bridge vibration speed feedback is introduced into a levitation control law based on state feedback of a magnetic flux inner ring, electrical damping of a bridge is increased, by the utilization of measurement data of vibration acceleration sensors and electrical vortex sensors on electromagnets, integration is performed on vibration accelerations of the electromagnets through an automatic return-to-zero integrator to obtain vibration speeds of the electromagnets, differential calculation is performed on levitation gaps, relative to the bridge, of the electromagnets to obtain vibration speeds, relative to the bridge, of the electromagnets, an estimation value of the bridge vibration speed is obtained through calculation, and then the levitation control law is utilized for controlling the levitation state of a magnetic-levitation train. In an existing engineering environment, on the basis that the system cost is not increased, a magnetic-levitation train-bridge coupling system is stable, self-induced vibration is avoided, and the ability of a middle-low speed magnetic-levitation train passing through the bridge at low speed is improved.
Magnetic-levitation train-bridge self-induced vibration restraining method introducing bridge vibration speed
2015-11-11
Patent
Elektronische Ressource
Englisch
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