The Design Of Semi Physical Simulation Driving System For Automobile

The invention of the automobile is convenient for people to travel,which brings great convenience to people's life.The driving process is a combination of people vehicle and road,so it is necessary to establish the vehicle model and the scene model.The car itself is a very complex system,which is composed of tens of thousands of parts,the traditional vehicle simulation only established the vehicle model,and gives the virtual driver control at the prescribed driving conditions,without considering the influence of the surrounding environment.The traditional automobile visual system,such as the car game,only shows the body displacement and attitude,but does not show the dynamic nature of the car.It can not be used to guide the design of the car.Combining the vehicle model,the visual system and the external equipment,it is easy to get the various parameters of the vehicle by controlling the dynamic virtual vehicle in the scene.The car model is designed to be accurate more,and the more reality of the scene will greatly enhance the accuracy of the results and the sense of immersion.This system can be used in the research of driver behavior,new energy vehicles in various road conditions and driver characteristics under the energy management strategy research,various vehicle chassis control algorithm and simulation system,and the sensor model can be automatic driving and intelligent driving strategy research in virtual environment.The work of this paper is to design a kind of simulation driving system,which includes the dynamic model of the vehicle system,the road scene and the input driving equipment.According to the characteristics of automobile driving,the whole design of the system is completed according to the aim and requirement of the visual display.This paper designs the operation panel system including parameter input,data storage and display by acquisition card.Using Matalb/Simulink build a vehicle dynamics model.Through the satellite map build the test field scene.Using 3D modeling software with Creator build the vehicle model,then add to the car collision detection.The driver's operating signal is collected by Labview to control the car running on the simulated road,the whole system is driven by xPC.The acceleration,fuel consumption and operation stability of the vehicle are simulated.The simulation results show that the whole design is reasonable,the system runs smoothly,and the basic functions of each module can be realized.The research of thisthesis can provide a reference for the construction of more complex simulation driving system.