Study On Vibration Characteristics Of High Temperature Superconducting Maglev Test Vehicle

High-temperature superconducting maglev vehicle which can travel frictionless near the ground has potential to become a super high-speed vehicle. So far, the study of high-temperature superconducting maglev has been mainly in the macro quasi-static electromagnetic properties, including the levitation force, guidance force, force relaxation and so on. However, as a kind of super high-speed vehicle tools in future, the dynamics research is essential for its application. To this end, this paper aims to study the dynamic behavior of HTS maglev.Firstly, the distribution of magnetic flux density was analytically calculated based on the molecular current cycle model. Then the levitation force suffered by the HTS bulks above the PMGs was calculated using the Bean model. According to the experimental data, the excitation that HTS maglev will suffer when it moves above the guideway was simulated.According to the experimental model, dynamic model was built, then the dynamic response was calculated using the dynamic model. In order to reduce the vibration, this paper puts forward to add suspended system to the HTS maglev system. The feasibility of the method was confirmed by experiments, furthermore, some simulation calculations has been done. The dynamic responses of HTS maglev system under different suspension parameters were obtained. Based on the above study, a dynamic model of a complete HTS maglev vehicle system was built with 11 degrees of freedom. The model can be used to optimize the parameters of the HTS maglev system, and simulate its dynamic responses under various excitation. In this paper, the dynamic behavior of HTS maglev was calculated, and the calculated results were in good agreement with the measured results, which impacts a lot in further design and optimization of HTS maglev vehicle and its commercial utilization.