汽车工程 ›› 2023, Vol. 45 ›› Issue (10): 1908-1922.doi: 10.19562/j.chinasae.qcgc.2023.10.012
所属专题: 新能源汽车技术-电驱动&能量管理2023年
收稿日期:
2023-03-07
修回日期:
2023-04-18
出版日期:
2023-10-25
发布日期:
2023-10-23
通讯作者:
赵治国
E-mail:zhiguozhao@tongji.edu.cn
基金资助:
Haodi Li,Zhiguo Zhao(),Peng Tang,Yongping Hou
Received:
2023-03-07
Revised:
2023-04-18
Online:
2023-10-25
Published:
2023-10-23
Contact:
Zhiguo Zhao
E-mail:zhiguozhao@tongji.edu.cn
摘要:
由于功率分流混合动力系统性能测试台架与实际车辆的动力学特性存在差异,导致测试台架难以精确模拟实车的行驶负载特性,使得功率分流混合动力系统模式切换性能测试的准确度不高。为此,本文提出一种基于负载动态补偿的功率分流混合动力系统模式切换性能台架测试方法。首先,建立了考虑实际车辆道路负载、模拟发动机、功率分流混合动力专用变速器(dedicated hybrid transmission, DHT)和测试台架传动系统的台架系统动力学模型;其次,针对纯电动至功率分流混合动力模式切换过程,对比分析了动力源的动态响应和台架系统模型的加载特性;然后,设计了基于转速闭环跟踪的转速前馈校正补偿器以提高负载模拟转速控制的抗干扰能力,并结合转矩前馈校正补偿器降低加载转矩的动态误差。最后,离线仿真和硬件在环台架试验结果表明:基于台架系统模型开发的负载动态补偿算法可提高测试台架加载精度32.67%以上,保证了功率分流混合动力系统模式切换性能测试的准确性。
李豪迪,赵治国,唐鹏,侯永平. 基于负载补偿的功率分流混合动力系统模式切换性能测试方法[J]. 汽车工程, 2023, 45(10): 1908-1922.
Haodi Li,Zhiguo Zhao,Peng Tang,Yongping Hou. Power Split Hybrid System Mode Transition Performance Test Method Based on Load Compensation[J]. Automotive Engineering, 2023, 45(10): 1908-1922.
表1
模拟车辆和功率分流DHT参数"
符号 | 描述 | 数值 |
---|---|---|
m | 车身质量/kg | 1 530 |
f | 滚动阻力系数 | 0.013 7 |
Cd | 空气阻力系数 | 0.307 |
A | 迎风面积/m2 | 2.19 |
R | 车轮半径/m | 0.31 |
iFD | 主减速比 | 3.529 |
ρ1 | 前行星排传动比 | 3.174 |
ρ2 | 后行星排传动比 | 2.355 |
JMG1 | MG1电机惯量/(kg·m2) | 0.041 |
JMG2 | MG2电机惯量/(kg·m2) | 0.072 |
JENG | 发动机惯量/(kg·m2) | 0.182 |
Jveh | 车辆等效惯量/(kg·m2) | 12.05 |
JS1 | 前排太阳轮惯量/(kg·m2) | 0.001 |
JS2 | 后排太阳轮惯量/(kg·m2) | 0.001 |
JR | 齿圈惯量/(kg·m2) | 0.002 |
JC | 行星架惯量/(kg·m2) | 0.002 |
cveh | 车辆等效阻尼/(N·m·s·rad-1) | 0.005 |
cMG1 | MG1电机输出轴阻尼/(N·m·s·rad-1) | 0.001 |
cMG2 | MG2电机输出轴阻尼/(N·m·s·rad-1) | 0.002 |
cTDS | 扭转减振器阻尼/(N·m·s·rad-1) | 0.1 |
kMG1 | MG1电机输出轴刚度/(N·m·rad-1) | 7 500 |
kMG2 | MG2电机输出轴刚度/(N·m·rad-1) | 12 500 |
kTDS | 扭转减振器刚度/(N·m·rad-1) | 619 |
kL | DHT输出轴刚度/(N·m·rad-1) | 2 863.3 |
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