摘要
针对电动汽车能量利用不足的问题,在分析电动汽车制动过程的基础上,提出了基于调节系数的制动力比例计算方法,并设计了再生制动模糊控制器,其通过模糊控制进行制动力分配,最后建立了电动汽车再生制动模型。实验结果表明,再生制动模糊控制器所采用的控制策略在不同工况下的电池SOC值均比电液复合控制高,最大相差0.03;在电机输出转矩方面,该控制策略所得负转矩最高接近2000 N·m;在续航里程方面,该方法在不同工况下分别提升了21%和18%。说明所设计的再生制动模糊控制器能够回收更多制动能量,在一定程度上延长了续航里程,与电液复合控制方法相比,具有更高的能量回收率,为电动汽车系统整体性能的提升及进一步发展提供了技术参考。
In view of the problem of insufficient energy utilization of electric vehicles,based on the analysis of the braking process of electric vehicles,a calculation method of braking force proportion based on the adjustment coefficient is proposed,and a fuzzy con-troller for regenerative braking is designed,which distributes braking force through fuzzy control.Finally,a regenerative braking mod-el of electric vehicles is established.The experimental results show that the battery SOC of the regenerative braking fuzzy controller under different operating conditions is higher than that of the electro-hydraulic composite control,with a maximum difference of 0.03;In terms of motor output torque,the maximum negative torque obtained by the control strategy is close to 2000N·m;In terms of en-durance mileage,this method has been improved by 21%and 18%respectively under different working conditions.It shows that the designed regenerative braking fuzzy controller can recover more braking energy and extend the range to a certain extent.Compared with the electro-hydraulic composite control method,it has a higher energy recovery rate,which provides a technical reference for the improvement and further development of the overall performance of the electric vehicle system.
作者
韩琳
周雄
王冰
史志勇
HAN Lin;ZHOU Xiong;WANG Bing;SHI Zhiyong(Xi’an King-Truck Electron Co.,Ltd,Xi’an 710077,China)
出处
《自动化与仪器仪表》
2023年第6期267-270,共4页
Automation & Instrumentation
关键词
电动汽车
再生制动
模糊控制
SOC
electric vehicle
regenerative braking
fuzzy control
SOC
