The Running Attitude Modeling Solution Method Of Train Bogie Based On The6-dof Motion Platform

China railway has officially entered the era of high-speed rail after the six times speedrising. China has become the high-speed rail country who has the most comprehensivetechnology, the strongest integration capabilities, the longest operating mileage, the fastestrunning speed, the largest scale of construction. There are also many problems to be solvedwith the vigorous development of high-speed rail. It is necessary to not only ensurehigh-speed trains will not overthrow and derail, but also to ensure and stability andcomfortable of the train.As the key component of the train, especially in the high-speed train, its running attitudedirectly affects the operational status of the high-speed trains. If we can have a real-timeprocessing combined bogie real-time motion gesture and the actual situation of the track, itwill contribute to the running smooth，comfort and security of the high-speed train.Therefore, it is necessary to study the running attitude of the high-speed train bogie.Simulating the high-speed train bogie running attitude based on building the full-featuredhigh-speed train bogie dynamic simulation6-DOF platform parallel mechanism. At first, itdescribes the basic structure, characteristics and kinematical analysis of the high-speed trainbogie. Secondly, it describes the basic components, the overall layout, and the workingprinciple of the6-DOF platform. It carries out the kinematical analysis on the6-DOFplatform.The inverse kinematics and forward kinematics mathematical models of the6-DOFplatform were build by the homogeneous transformation method and the Newton Raphsonmethod. To got the bogie running attitude by calculating and controlling the running attitudeof6-DOF platform based on reasonable choice of the location of static and body coordinatesystem.Building6-DOF platform inverse kinematics and forward kinematics simulation modelsin MATLAB/Simulink simulation integrated environment. To prove the correctness andaccuracy of the inverse kinematics and forward kinematics simulation models throughrunning solution model. When the bogie has various sorts and varieties running attitudes,calculated the telescopic of platform hydraulic actuators by running inverse kinematicssimulation models, which can be used for the control input information driving platform toget the various running attitude of the bogie.In this paper, building ADAMS model of the bogies and6-DOF platform in ADMASsimulation environment and building ADAMS and MATLAB control simulation model ofthe bogies and6-DOF platform.The model accepts control input information from theMATLAB to drive6-DOF platform to produce a corresponding movement to implement thebogie running attitude. The results show that the actual bogie running attitudes are substantially the same as the expectations. It is verified that the structural design of the6-DOF platform is correct through observing the animation of6-DOF platform simulatingbogie running attitudes, during which each member of6-DOF platform does not occurinterference phenomenon, the process of the movement of the platform is ideal.In summary, the paper established the high-speed train bogie running attitude modelingsolution method based on the6-DOF platform and simulated them in ADAMS andMATLAB virtual environment. It helps us to assess the train operation quality, evaluate thereasonable of the line and design the high-speed train Bogie, with great social significance toensure the safety of high-speed train.