摘要
针对大学生电动方程式赛车能量利用率不高、电池轻量化不足的问题,该文基于模型预测算法的控制思想,对基于规则的并联式控制策略进行优化,提高了能量利用率和续航里程,减少电池重量。首先,针对大学生电动方程式赛车制动工况特点,构建制动过程数学模型。其次,通过模型预测控制算法优化电液复合制动分配比例。最后,在Simulink中建立整车模型,基于耐久赛和紧急制动工况对新型控制策略进行仿真分析。仿真结果表明,该种控制策略可以达到30.4%的能量利用率,比普通并联式控制策略能量利用率提高了9.4%,制动距离比未搭载再生制动的模型减少了4.5m。
Aiming at the problems of low energy utilization rate and insufficient lightweight batteries of electric equation racing car for college students,this paper proposes an electro-hydraulic coordinated braking energy recovery control strategy based on the effective control idea,which is used to improve the energy utilization rate,endurance mileage and reduce the weight of batteries.Firstly,according to the characteristics of braking conditions of electric equation racing car for college students,a mathematical model of braking process is constructed.Secondly,the braking energy recovery strategy of electro-hydraulic coordination is used to optimize the distribution ratio of electro-hydraulic composite braking.Finally,the whole vehicle model is built in Simulink,and the new control strategy is simulated and analyzed based on durable race and emergency braking conditions.The simulation results show that the energy utilization rate of this control strategy can reach 24.9%,which is 3.9%higher than that of the conventional parallel control strategy,and the braking distance is 4.5 m less than that of the model without regenerative braking.
作者
张鑫康
杜常清
曹锡良
ZHANG Xin-kang;DU Chang-qing;CAO Xi-liang(Hubei Key Laboratory of Advanced Technology for Automotive Components,Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology,Wuhan 430070,China)
出处
《自动化与仪表》
2019年第8期82-89,共8页
Automation & Instrumentation
基金
国家自然科学基金项目(51775393)
新能源汽车科学与关键技术学科创新引智基地资助项目(B17034)
