Research On Powertrain Parameters Design And Vehicle Control Strategy For Electrical Racing Car

With the thriving new energy development,national policies introduced measures to cultivate talent students in electric vehicle application.Such as,China Automotive Engineering Society held the first FSEC in 2013.This research is purposed to match powertrain system parameters and set up vehicle control strategy.Parameters of each vehicle systems determination based on the entire performance design goal,Researching electric racing car motor,control technology.power battery and Battery management system are initial steps for AMOY-Ⅱ motor selection,battery pack capacity matching and transmission ration calculation.Utilizing Optimum Lap software to build FSEC track models simulating racing car working condition,adopting Batch bulk simulation model optimize transmission ration and reach to power and efficiency design goal.Simulink application is to build up vehicle control system of AMOY-Ⅱ and research control strategy.These are reliability of acceleration&braking pedals control strategy,charge/discharge control strategy,traction control strategy,safety management control strategy and torque control strategy.In these ways of research,it is a comprehensive method to improve performance and efficiency of racing car,meanwhile to insure normal running of the racing car.After confirming the vehicle control strategy,through joint simulation with Cruise and Simulink,built the AMOY-Ⅱ simulation model to analysis working condition on the track which is from the result of Optimum Lap.The simulation result showed transmission parameters fit for design goals after 75m acceleration,max speed,endurance simulation.Compared with the racing car without control strategy,this research improved power performance,increased mileage,prolong battery lifetime of this electric racing car,and approve the reliability of control strategy.Lastly,according to dynamic events of FSEC,we tested the max speed,75m acceleration and endurance performance in real car and analysis acquired data from wireless data acquisition model and compared with design goal and simulation result.The conclusion is that racing car with vehicle control strategy finished 75m acceleration in 4.155s,reached 119km/h as max speed,remained 32%state of charge after 22km endurance test,also the error between test and design goal is less than 5%.The test proved the control strategy could rationally distribute power output,improve efficiency and promote acceleration performance...