基于最佳速度区间的纯电动汽车AMT自适应换挡控制策略

doi:10.13229/j.cnki.jdxbgxb.20250010

摘要/Abstract

摘要：

针对传统控制策略下两挡纯电动汽车难以适应各种复杂工况获得最佳换挡性能的问题，提出了一种智能换挡控制方法。根据不同挡位下电机效率和车辆行驶加速度，结合电池状态，分别得到传统双参数最佳经济性换挡规律和最佳动力性换挡规律，并以此分析得到车辆最佳换挡区间。根据加速踏板开度和加速踏板变化率，通过模糊控制，对驾驶员的驾驶意图进行识别，结合驾驶员意图和合理范围内的车速，设计两级模糊控制智能换挡控制器，通过仿真验证了所设计的自适应换挡策略的有效性。仿真结果表明，面对不同工况，与传统三参数模糊换挡控制相比，本文所设计的自适应换挡策略能准确结合车辆性能和驾驶员意图，减少换挡频次，经济性得到提升。

关键词: 车辆工程, 纯电动汽车, 两挡变速器, 换挡区间, 驾驶员意图, 模糊控制

Abstract:

For the problem that it is difficult to adapt to various complex working conditions to obtain the best shift performance of two-gear pure electric vehicles under the traditional control strategy， this paper proposes an intelligent shift control method. According to the motor efficiency and vehicle driving acceleration in different gears， combined with the battery state， the traditional two-parameter optimal economic shifting law and the optimal power shifting law are obtained respectively， and the optimal shifting interval is analyzed to obtain the optimal shifting interval of the vehicle. According to the accelerator pedal opening degree and accelerator pedal change rate， the driver's driving intention is recognized through fuzzy control， and combined with the driver's intention and the vehicle speed within a reasonable range， a two-stage fuzzy control intelligent shift controller is designed， and the validity of the designed adaptive shift strategy is verified through simulation. The simulation results show that in the face of different working conditions， compared with the traditional three-parameter fuzzy gearshift control， the adaptive gearshift strategy designed in this paper can accurately combine the vehicle performance and driver's intention， reduce the frequency of gearshift， and improve the economy.

Key words: automobile engineering, pure electric vehicle, two-speed transmission, shift interval, driver intention, fuzzy control

中图分类号:

U471

乔雪涛,郭铸锋,徐航,赵增效,段天航,田晓中. 基于最佳速度区间的纯电动汽车AMT自适应换挡控制策略[J]. 吉林大学学报(工学版), 2026, 56(8): 2059-2066.

Xue-tao QIAO,Zhu-feng GUO,Hang XU,Zeng-xiao ZHAO,Tian-hang DUAN,Xiao-zhong TIAN. Adaptive shift control strategy of pure electric vehicle AMT based on optimal speed range[J]. Journal of Jilin University(Engineering and Technology Edition), 2026, 56(8): 2059-2066.

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部件名称	参数名称	数值
整车	整备质量/kg	1 975
	迎风面积/m²	2.9
	风阻系数	0.205
	车轮半径/m	0.354
电机	额定功率/kW	60
	最高转速/（r?min^-1）	10 000
	峰值转矩/（N?m）	330
两挡变速器	最终速比	10.56/6

加速踏板开度	加速踏板变化率	隶属度
as	a?n	vb
as	a?z	b
as	a?p	s
am	a?n	b
am	a?z	m
am	a?p	vs
ab	a?n	b
ab	a?z	s
ab	a?p	vs

	vl	l	bl	m	bh	h	vh
vb	1	1	1.6	2	2	2	2
b	1	1	1.6	1.8	2	2	2
m	1	1	1.4	1.8	2	2	2
s	1	1	1.4	1.8	1.8	2	2
vs	1	1	1.2	1.6	1.8	2	2