南昌工程学院学报2024，Vol.43Issue(1)：71-75,5.
考虑坡度工况的混合动力系统多目标优化策略研究
Research on multi-objective optimization strategy for hybrid power system considering slope conditions
摘要
Abstract
In order to optimize vehicle performance in slope conditions,a multi-objective optimization strategy for hybrid power system considering slope conditions was proposed in this paper.To solve the torque instability problem caused by en-gine response lag and demand torque fluctuation in the climbing process,the motor torque optimization coefficient was intro-duced as the control variable by using the fast and accurate response characteristics of the motor to the torque,and the NS-GA-II algorithm was adopted to realize the trade-off optimization of ride comfort and economy.The vehicle model was built on the Matlab/simulink platform,and the simulation verification was carried out under the slope condition.The results show that under the working condition of a slope of 5%,the maximum jerk without optimization is 19.6 m·s-3,and the maxi-mum jerk after optimization is10.6 m·s-3,which decreases by45.91%.The equivalent fuel consumption without optimi-zation is 0.5688 L,while the equivalent fuel consumption after optimization is 0.6087 L,which increases by 7.01%.The a-bove results indicate that the stability of the optimized hybrid system has been greatly improved,while the economy has only slightly decreased,thus verifying the effectiveness of the multi-objective optimization strategy for the hybrid system consider-ing slope conditions.关键词
混合动力系统/经济性/平顺性/多目标优化/等效燃油消耗/坡度工况Key words
hybrid power system/economy/stability/multi-objective optimization/equivalent fuel consumption/slope condi-tions分类
交通工程引用本文复制引用
郑清香,寇桂岳,黄强,茶映鹏..考虑坡度工况的混合动力系统多目标优化策略研究[J].南昌工程学院学报,2024,43(1):71-75,5.基金项目
福建省中青年教师教育科研项目(JAT201314) （JAT201314）
黎明职业大学校级一般课题(LT202117) （LT202117）
江西省教育厅科学技术研究项目(GJJ211912,GJJ211911) （GJJ211912,GJJ211911）
南昌工程学院校级教改课题(2021JG011) （2021JG011）
