Research On Electronic Differential Control System Of Distributed Electric Vehicle

Electronic differential control technology is a pivotal technology in the whole vehicle control technology of electric vehicles.In this thesis,the topological structure of the rear wheel independent drive electric vehicle is the research object,in order to improve the stability and safety of the electric vehicle steering,the distributed drive electric vehicle electronic differential control system based on the rear wheel independent drive is deeply researched.The main contents of this paper are as follows:(1)Based on the physical structure and working principle of the electric vehicle,through the analysis of the dynamics theory of the vehicle and the study of the yaw torque control technology based on neural network algorithm and the learning of the torque distribution control strategy of the driving wheel,the control strategy of the rear wheel independent driving electric vehicle is put forward.(2)A rear wheel independent drive electric vehicle model is built in Carsim.Based on the CarSim/simulink joint simulation platform,the simulation model of the electronic differential speed control strategy of the rear wheel independent drive electric vehicle is set up,and the simulation experiment is carried out and the experimental results are analyzed.(3)The simulation model of rear wheel independent drive intelligent vehicle is built,and the simulation model of rear wheel independent drive intelligent vehicle electronic differential system is built.By fixing the model,a code model of rear wheel independent drive intelligent vehicle electronic differential system is built.Based on the TMS320F2812 main control chip,the rear wheel independent driving intelligent vehicle experiment platform is built.Then according to the RTW technology and the rear wheel independent driving intelligent vehicle experimental platform,the CCS is used to automatically generate the C code of the electronic differential speed system code model of the rear wheel independent drive intelligent vehicle and download the hardware in the hardware platform of the smart car and carry out the hardware in the loop.Test.Finally,the conclusion is analyzed.