Modeling And Simulation Analysis Of Maglev Vehicle System Dynamics

Maglev train is a new type of ground tracked transport, which has favorable developmental foreground. Based on the situation of our country, China positively adopted German TR08 high-speed maglev train technology, the domestic development of which is being busily carried nowadays. And, we also have mastered a set of key technology on medium-low-speed electromagnetic suspended maglev train. Maglev train/guidway system is a complex dynamic coupling system related to mechanical system and electronic system. It is necessary to investigate a good many dynamic problems coming forth during engineering application. Under this background, the dissertation carries out the research on modeling and simulation analysis of maglev system dynamics, based on Qingcheng mount. low-speed maglev vehicle and TR08 high-speed maglev vehecle on Shanghai test line. The detailed research work and main results are as follows.The dynamic modeling process of high-speed maglev levitation frame is detailedly illustrated on the basis of analysis about the structures of electromagnetic bogie. A dynamic model of the elastic levitation frame is set up with the utility of three kinds of commercial software, computer aid design software Solidworks, finite element analysis software ANSYS and multi-body system dynamics simulation software SIMPACK. Chapter 4 forwardly analyses the kinematical relationship and suspending structures of Qingcheng Mount. low-speed maglev vehicle and TR08 high-speed maglev vehicle. Finally, low-speed and high-speed maglev dynamic models are developed with parametric and substructure techniques.The dynamic response of high-speed maglev system based on elastic levitation frame is simulated and analyzed. The dynamic response rules of car-body, levitation gap and current of levitation magnetic, lateral gap and current of guidance magnetic, and guidance force are brought out when negotiating a typical curve. Also, the dynamic response of the deformation about bow-shaped foot of levitation frame is simulated and analyzed during curve negotiation. Chapter 5 also carries out a comparative study on the dynamic response of maglev system when passing over three different transition curves including sine-shaped, cosine-shaped and convolution-shaped. Simulation results coincide with the theoretical analysis. The simulation analysis of guidance mechanism of low-speed maglev system is carried out based on the complete dynamic model. And, the kinematical rule of the T-shape arm, lateral skid platform and the relationship of which is brought out.Forwardly, a complete high-speed maglev-bridge-controller coupling dynamic model is set up. Simulation analysis on the dynamic response characteristic of maglev/bridge system is investigated when running at four different speed. The calculated value of elastic bridge is compared to the experimental value of which. At last, comparative study on the dynamic response of bridge with non-irregularity and random geometry irregularities is carried out.