汽车工程 ›› 2022, Vol. 44 ›› Issue (10): 1571-1580.doi: 10.19562/j.chinasae.qcgc.2022.10.012

所属专题: 新能源汽车技术-电驱动&能量管理2022年

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基于NSGA-Ⅱ算法和模糊控制的纯电动汽车2DCT换挡规律研究

殷学冰1,陈勇1(),代青林1,刘海1,田乃利2,贺伯林1   

  1. 1.河北工业大学,天津市新能源汽车动力传动与安全技术重点实验室,天津  300130
    2.珠海华粤传动科技有限公司,珠海  519060
  • 出版日期:2022-10-25 发布日期:2022-10-21
  • 通讯作者: 陈勇 E-mail:chenyong1585811@163.com
  • 基金资助:
    宁波市科技计划项目(2019B10111)

Study on Shift Schedule of 2DCT for Pure Electric Vehicle Based on NSGA-Ⅱ Algorithm and Fuzzy Control

Xuebing Yin1,Yong Chen1(),Qinglin Dai1,Hai Liu1,Naili Tian2,Bolin He1   

  1. 1.Hebei University of Technology,Tianjin Key Laboratory of Power Transmission and Safety Technology for;New Energy Vehicles,Tianjin  300130
    2.CNC Driveline Technology Co. ,Ltd. ,Zhuhai  519060
  • Online:2022-10-25 Published:2022-10-21
  • Contact: Yong Chen E-mail:chenyong1585811@163.com

摘要:

换挡规律是影响汽车动力性和经济性的关键因素。针对自主研发的纯电动汽车两挡干式双离合变速器(2DCT),以不同踏板开度下的换挡车速作为优化变量,通过NSGA-Ⅱ算法得出换挡速度的Pareto前沿,利用线性加权法求出兼顾经济性和动力性的踏板开度和车速两参数换挡规律。引入加速度构建一种三参数模糊控制器,对换挡速度进行动态调整,得到综合性换挡规律。结果表明,综合换挡规律能同时兼顾整车的经济性和动力性,并且相较于经济性换挡规律较大程度减少换挡频率。

关键词: 纯电动汽车, 两挡干式双离合变速器, 换挡规律, NSGA-Ⅱ算法, 模糊控制

Abstract:

Shift schedule is a key factor affecting the economy and power performance of vehicle.For the independently developed two gear dry dual clutch transmission (2DCT) of pure electric vehicle, taking the shifting speed under different pedal opening as the optimization variable, the Pareto front of the shifting speed is obtained by NSGA-Ⅱ algorithm,and the shift schedule considering both economy and power performance of pedal opening and speed is obtained by linear weighting method. A three-parameter fuzzy controller is constructed by introducing in acceleration to dynamically adjust the shifting speed, and the comprehensive shifting schedule is obtained. The results show that the comprehensive shift schedule can take into account the economy and power performance of the vehicle simultaneously, and reduce the shift frequency greatly compared with the economic shift schedule.

Key words: pure electric vehicle, two gear dry dual clutch transmission, shift schedule, NSGA-Ⅱ algorithm, fuzzy control