Low-speed Maglev Train Kinematics Modeling And Structure Calculations

The parameters design of the Maglev vehicle structure and the rail curve design are the key processes of the Maglev system design. It effected on the running quality of the vehicle. Aiming to these problems, this dissertation established the kinematical model of the secondary suspension system and designed the curves parameters of the rail. Considering the Maglev structure and the rail parameters, the design requirements for some key components of the vehicle were given based on kinematical theory. The main contents are as follows:1. The Maglev vehicle can run through different curves smoothly is because that the relative movement of components of the secondary suspension system can provide different DOF. According to the structure of the secondary suspension system, the dissertation established the kinematical model for it based on the D-H transformation. The inversed solution to kinematics equation is given, and this is the precondition to analyze the movement of the components of the secondary suspension system.2. Based on the traditional railway parameters design, this dissertation designed the parameters for different curves considering the different characteristics of the Maglev vehicle, such as the electromagnetic guide force, the electromagnetic levitation force and the ability of the suspension controller.3. Since the parameters of the curves were designed, the dissertation established coordinates on both bogie module and the carriage, and proved that the bogie structure was decoupled on the curve. Then based on the decouple characteristic of the bogie structure, the relation between the two coordinates were given on different curve types.4. Based on all these results, the design requirements of the linear bearing and the airspring were given according to the model of the secondary suspension system. Then, the dissertation proposed the design requirements of the coupler between the carriages based on its movement while it is running above the rail. The yawing mechanism of the bogie was also analyzed and the different characteristics of two different structures were given.