Research And Implementation Of Vehicle Driving Simulator Based On Virtual Reality

In recent years,there has been a gradual increasement in the number of people owning cars,this situation has brought the following questions:the driver non-professional,bloated traffic chaos,frequent traffic accidents and many other issues.In view of the above problems,one of the solutions is to improve the professional quality of the driver,to enhance the driver's driving training.As a new part of driving training,the vehicle driving simulator can provide more safe,convenient,efficient and energy-saving training service compared with the traditional driving training.However,due to the late start of the development of China's vehicle driving simulator,The existing vehicle driving simulator has some problems,such as low running accuracy,unstable structure,poor real-time performance and poor immersion.Therefore,it is of great practical significance for the research of vehicle driving simulator system.In this thesis,according to the characteristics of the vehicle driving simulator,through the analysis of the main functional requirements of the vehicle driving simulator,the paper designs and realizes a kind of motion simulation platform with simple structure and good stability,which combines with virtual reality technology to form a set of vehicle driving simulator system.Firstly,in this thesis,according to the functional requirements of the vehicle driving simulator,the overall design framework and working principle of the vehicle driving simulator are given,and the structural model of the motion simulation platform is chosen and the corresponding mathematical model is established,In this thesis SolidWorks and Adams software are used to create a three-dimensional model of the vehicle driving simulator,with the three-dimensional model,the kinematics and dynamics of the simulation platform are analyzed,and the reliability of the platform is verified.In order to improve the operation accuracy and stability,according to the vector relationship between the components of the motion simulation platform,the solution model of the platform pose is established,an improved particle swarm optimization algorithm based on chaotic sequences is presented,it is used to calculate the positive and negative solutions,and the simulation results show the feasibility and effectiveness of the improved algorithm.Secondly,With the six degrees of freedom motion simulation platform model,this thesis studied the position closed-loop control strategy,the design and implementation of the PID control algorithm for the classical control strategy is completed,the feasibility of the control system is verified by Adams and MATLAB,At last,the real-time position closed loop control of the parallel robot platform is realized by PC software and motion control card.Finally,from the actual situation of the project,the simulation platform of vehicle driving simulator is constructed,the data acquisition and communication of driving interactive equipment is realized in the unreal engine development environment.At last,through the simulation experiment and the actual operation test,the design of the vehicle driving simulator system can run stably,and can meet the requirements of the virtual driving experience.