Research on Braking Torque Distribution Control Strategy of Distributed Drive Electric Vehicle Based on NSGA-Ⅱ Algorithm
To balance braking safety and braking energy recovery of distributed drive electric vehicles,this article explored the vehicle braking torque distribution control strategy based on NSGA-Ⅱ multi-objective optimization algorithm.An optimization module based on fuzzy control was established,and the optimal torque distribution coefficient was determined from the Pareto frontier optimization according to vehicle speed and demand braking torque.With an electric passenger vehicle as the research object,a brake torque distribution control strategy model was built based on Matlab/Simulink and VPAT and simulated.A hardware-in-loop simulation platform was built,and real-time performance and validity of this algorithm were verified.As was shown in the result,the brake torque distribution coefficient of the control strategy based on NSGA-Ⅱ was closer to the distribution coefficient of ideal Ⅰ curve,and the operation points of the motor braking efficiency zones were increased by 9.51 percentage point,and the energy recovery rate of vehicle regenerative braking was increased by 4.71 percentage point.
Distributed driveNSGA-Ⅱ algorithmFuzzy controlBraking torque distribution
万方数据
维普
