Electric Vehicle Power System Intelligent Control Strategy And Simulation Research

For the awareness of the energy crisis and environmental pollution increasing,electric vehicles will became a suitable alternative to conventional vehile since itsadvantages of efficient and no emissions and it has also become an important object ofstudy researchers. And for electric vehicle, the robustness of control directly affectsthe various properties of electric vehicles. This article is based on the traditional carconverted into a pure electric vehicle as the research background. The main researchcontents and innovation points are as follows:1) According to the basic parameters of the original car, the basic parameters ofthe modified electric vehicle has been estimated and the conversion goals.have alsobeen set up. The parameter of drive motor transmission ratio and power battery hasbeen matched and the matching results have been checked.with software.2) According to the vehicle moving equation and the mathematical model ofmotor, electric vehicle power system model is established. On the basic idea of theinverse system, the nonlinear system is linearized and the corresponding H∞optimalrobust cotroller has been design. The electric vehicle power system robust inversecontrol.has been completed. Compared the simulation results of the H∞optimalrobust controller and the PID controller, the H∞optimal robust controller has betterresponse.3) The overall layout of modified electric vehicles and the structure and functionof the vehicle controller are introduced. Through the analysis of the accelerator pedalcontrol strategy, this paper focuses on the analysis of the power mode control strategyin the climbing or starting and the normal mode control strategy in normal driving.And the two kinds of control strategies are simulation with robust control and withoutrobust control system, proving the correctness and feasibility of Drive control strategy,and the of effectiveness robust control in drive control strategy.