Anti-skid Control Strategy Of Distributed Drive Pure Electric Vehicle

As energy sources become fewer and fewer and the number of cars increases,exhaust emissions from automobiles have caused major problems.As electric cars cannot emit pollutants,they have become a major player in the history of automotive development.The pure distributed electric traction vehicle uses a highly integrated central motor as a traction device and the battery as a power source,which reduces the annoying mechanical transmission device.It uses wire control technology for control,so that the entire system has a speed response speed and is convenient for precision.Control the driving force and the speed of the wheel.When the purely electric distributed-traction vehicle is driving in poor road conditions,the vehicle slides and sideways.In severe cases,he shakes his head and is life-threatening.Therefore,it is necessary to study the anti-skid control strategy for electric vehicles,and the following work was carried out to solve this problem:(1)Introduced the current status of the development of pure electric vehicles at home and abroad,focusing on the current status of non-slip drive technology and summarized the general characteristics and structure of distributed electric drive vehicles.(2)Design and establish the dynamic model of the electric vehicle,the main content includes the body model,the permanent magnet synchronous motor system model and the diffuse control model based on the ideal slip rate.The Matlab / Simulink computer is used to create the model and further define each model,as a verification platform for subsequent algorithms.(3)Using the relationship between the slip rate and the adhesion coefficient,based on the road surface identification method,the standard curve for vehicle tires is obtained.(4)Based on the theory of anti-slip electric vehicle steering,a slip rate observer and a non-slip steering controller are established.The fuzzy control algorithm with variable scale factor is selected and the simulation is performed in Matlab.The simulation is carried out under different driving conditions.The results show that the control strategies can be effectively controlled,and the variable scale factor fuzzy control strategy is more effective.The optimized algorithm can provide reference and reference for the anti-skid driving of electric vehicles in the future.