Study On Dual-Motor Electric Vehicle Predictive Control Based On Intelligent Driving Strategy

Automotive technology keeps developing towards better performance on energy conservation,environmental protection and intelligence.Currently,national governments around the world and automotive enterprise take the new-energy automotive as the solution to energy crisis and environmental pollution,and make great efforts to promote its development.Meanwhile,automotive control technology becoming more ever advanced,variety of intelligent and humanization design are utilized to automotive.Pure electric vehicle technology is a research focus of automobile industry with its advantage of high energy efficiency and zero-emission.In this article,the author focus on one novel multi-mode dual-motor driving electric vehicle,study on the control strategy consisting driving style and predictive control,in purpose of improving the energy efficiency and intelligent control performance.Related works are as follows:Proposed a novel multi-mode dual-motor coupling structure based on comparing several sorts of dual-motor structures currently utilized;Conducted parameters matching work to satisfy the propulsion target as well taking the usual operation condition as consideration to make powertrain work more in high-efficiency condition so as to improve energy efficiency.Implemented artificial neural network to identify the driving style for later utilized in vehicle control.Assisting this solution,an experiment system was developed,which consists simulation driving platform,drive-load motors bench and host computer.In this system,core design are as follows:master control system based on microcontroller MC9S12EQ512,driving simulation interface system based on DGUS touchscreen,data receiving and processing system based on Lab VIEW,artificial neural network program in MATLAB for driving style identification.Studied on the control strategy of the powertrain mentioned above,three core control strategy are proposed:the vehicle propulsion control strategy combining driving style and driving condition identification,aiming at controlling the powertrain to support satisfying propulsion for the driver;driving modes control strategy of motors coupling system based on instantaneous minimum energy consumption and predictive control to select the driving mode;power distribution strategy of motors based on maximum efficiency of dual-motor-coupling system to make motors wok in the optimum condition.Built simulation model of the vehicle powertrain in MATLAB/SIMULINK.Conduct simulation experiment about the multi-mode dual-motor driving system mentioned above to analyze its performance and verify the effectiveness of the control strategy.