12/27/2023 0 Comments Masstransit turnout![]() ![]() The problem of the dynamic interaction between vehicle and guideway has been extensively studied in rail transport dominated by wheel/rail system. All these commercial lines use normal conducting magnetic levitation however, practice has shown that vehicle/guideway dynamic interaction with active control is problematic, and the vehicle is prone to levitation instability when standing still above the guideway as well as vehicle–guideway coupled vibration, posing a challenge for the further development of medium–low-speed maglev transport. Medium–low-speed maglev, as one of the new urban rail transit systems, has considerable development potentials due to its excellent features such as low-noise operation, route selection flexibility, zero derailment risk and short construction cycle, and thus has been put into commercial operation in Japan, Korea and China. In order to alleviate traffic congestion, urban rail transit has been promoted rapidly in recent years, greatly facilitating the travelling of passengers. ![]() All these test results could provide references for model validation and optimized design of medium–low-speed maglev transport systems. Finally, the frequency distribution characteristics of the coupled system were discussed. Then, the natural vibration characteristics of the turnout were analysed using the free attenuation method and the finite element method, indicating a good agreement between the simulation results and the measured results the acceleration response characteristics of the coupled system were analysed in detail, and the ride quality of the vehicle was assessed by Sperling index. Firstly, the dynamic response data of the coupled system under various operating conditions were obtained. To this end, dynamic performance tests were conducted on a vehicle–turnout coupled system in a medium–low-speed maglev test line. However, the vehicle under active control is prone to vehicle–turnout coupled vibration, and thus, it is necessary to identify the vibration characteristics of this coupled system through field tests. The steel turnout is one of the key components in the medium–low-speed maglev line system.
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