Study On Movement Perception Simulation System For High Speed Train Driviving Simulator

With the increase of train running speed, the movement perception simulation system, which is the key to train driving simulator, must meet some new and tough needs to improve system performance, and enhance simulation fidelity. Some important problems of movement perception simulation system for high speed train driving simulator such as the proprioceptive simulation algorithm, optimal match of system parameters and design of movement platform are studied systematically in this doctoral dissertation as follows.Firstly, the deficiencies of three commonly used proprioceptive simulation algorithms applied to high speed train driving simulator are analyzed, and the key problems for design of proprioceptive simulation algorithms for high speed train driving simulator are investigated. On these basis, the implementation method for design of proprioceptive simulation algorithms for high speed train driving simulator is developed. In this method, the best washout location is found by studying the effect of different washout location on simulation fidelity. Based on Genetic Algorithm, the fixed parameters of proprioceptive simulation algorithms for high speed train driving simulator is optimized to satisfy such requirements as quick return to initial position of movement platform and thresholds of human body movement sensation. Two new proprioceptive simulation algorithms for high speed train driving simulator, i.e., the fuzzy classical washout algorithm and the fuzzy adaptive washout algorithm, are presented combined with fuzzy control theory. It is demonstrated that the new algorithms can carry out real-time calculation of high speed train driving simulator with higher simulation fidelity.Secondly, Optimal matching strategy on parameters of movement perception simulation system for high speed train driving simulator is put forward. The relationship between simulator platform structure parameters and washout algorithm parameters is established by giving a fast solution for the maximum linear (angular) displacement in six directions of simulator platform. And, a new idea for determining the washout parameters based on structural parameters of movement platform and a new method for simulator platform structure parameters optimization oriented to simulation fidelity are proposed. By using the new method, the optimal platform structure parameters of high speed train driving simulator and the matched washout algorithm parameters are gotten simultaneously.Lastly, the creative design for the movement platform of high speed train driving simulator is discussed. A new systematic configuration method for designing 6-DOF parallel mechanism based on type number synthesis is presented. By applying the presented method, a 3PPRS parallel mechanism is obtained as the movement platform of high speed train driving simulator, whose structure parameters are optimized oriented to simulation fidelity. Compared with 6SPS parallel manipulator, the simulation results on the kinematics and dynamics show that the 3PPRS parallel mechanism can realize the movements of high speed train with more potential to be the movement platform of high speed train driving simulator.The modeling, analysis, simulation and optimization in this dissertation are conducted utilizing the software of ADAMS and MATLAB.