Based On Virtual Prototype Maglev Train Modeling And Simulation

While the maglev train advances into the engineering application, it's necessary to study the kinematics and dynamics characteristics of the train to ensure the train can run safely and reliably. The application of the virtual prototype technique to the maglev train can overcome the difficulties in creating the mathematical model of the train and the disadvantages of the prototype train, for example the manufacture cost is expensive, the structure parameters of the vehicle can not be modified, etc. The virtual prototype model of the CMS-03 mid-low speed maglev train is built. The model is a well simulation platform for the kinematics and dynamics research of the train. The dynamics characteristics of the yawing mechanism are studied intensively making use of the platform. It provides references for the design and experiment of the vehicle.Firstly, the 3D entities of the vehicle parts are built in the software Solidworks. According to the space structure of the maglev train, the part models are connected in ADAMS. The vertical stiffness of the air spring is calculated. The track curve is built based on the parameters of the Changsha test track. The virtual prototype models of the vehicle mechanism system and the railway are established thereby.Then, the mathematical model of the suspension system is built. The influence of the different control parameters to the system overshoot is analyzed. It provides references for the debugging of the control parameters. The virtual prototype model of the suspension system is built based on the mathematical model. The modeling methods and reasons of the controller the sensors and the electromagnet are introduced in detail. The simulation of the suspension system proves the modeling methods are reasonable. The whole virtual prototype model is established thereby. The gap track error on the upright curve is analyzed while the integral of the acceleration signal is applied to the model.Lastly, the dynamics characteristics of the yawing mechanism are analyzed. The function of the yawing mechanism and the relationship between the vehicle velocity and the wire rope pulling force are educed. The experiment at a low speed of the vehicle proves that the results of the analysis and the simulation are reliable. The wire rope pulling forces at different vehicle speeds are simulated.