抄録
Based on a single magnet suspension system applied to a low-speed maglev vehicle in China, the suspension stiffness and damping characteristics are investigated. Theoretic analyses show that suspension stiffness and damping are directly proportional to the feedback gains of airgap and airgap velocity respectively. Then, considering a real two-level cascade control system, a dynamic model of the single magnet-guideway-controller coupling system is established. Simulation results of take-off dynamic response indicate that the system resonance will be easily excited if any two of the frequency of secondary suspension, the eigenfrequency of guideway and the frequency of electromagnetic suspension are too close.
