Research on Torque Distribution and Switching Quality Optimization Control of Multi-mode HEV

doi:10.3901/JME.260316

Abstract

Abstract: To improve the switching quality of multi-mode hybrid electric vehicle(HEV), an optimization control strategy for multi-mode switching quality based on torque distribution is proposed. A dynamic model of the HEV multi-mode powertrain system is established, taking into account the influence of clutch friction work, along with evaluation indices for switching quality. The switching conditions of multi-mode driving are analyzed, and target torque profiles for each driving mode and transition process are theoretically calculated. A hierarchical fuzzy control strategy for clutch hydraulic pressure is designed based on the target torque during switching. The upper-level fuzzy algorithm determines the desired clutch pressure, while the lower-level fuzzy PID controller tracks the actual pressure. A dynamic motor torque compensation strategy is developed based on the target torque of each driving mode to compensate for clutch friction work and engine torque lag. A multi-objective fuzzy optimization method is employed to determine the optimal clutch hydraulic pressure to enhance switching quality. Four standard driving cycles are selected for simulation. Results demonstrate that the proposed control strategy ensures both power performance and driving smoothness, effectively suppresses jerk, reduces clutch friction, and improves the overall quality of driving mode switching.

Key words: HEV, multi-mode switching quality, torque distribution, torque compensation, fuzzy optimization control

CLC Number:

U461

JIN Zhilin, GAO Zhengheng. Research on Torque Distribution and Switching Quality Optimization Control of Multi-mode HEV[J]. Journal of Mechanical Engineering, 2026, 62(8): 398-409.

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URL: http://www.cjmenet.com.cn/EN/10.3901/JME.260316

http://www.cjmenet.com.cn/EN/Y2026/V62/I8/398

References

[1] UROOJ A,NASIR A. Review of intelligent energy management techniques for hybrid electric vehicles[J].Journal of Energy Storage,2024,92:112132.
[2] HU X,LIU T,QI X,et al. Reinforcement learning for hybrid and plug-in hybrid electric vehicle energy management:recent advances and prospects[J]. IEEE Industrial Electronics Magazine,2019,13(3):16-25.
[3] 严正峰,蒋光宗,姚明尧.驱动系统效率最优的并联混合动力商用车模式切换及换挡控制策略[J].中国机械工程,2024,35(2):354-363.YAN Zhengfeng,JIANG Guangzong,YAO Mingyao.Mode switching and gear shift control strategy for parallel hybrid commercial vehicles with optimal drive system efficiency[J]. China Mechanical Engineering,2024,35(2):354-363.
[4] LIN Y,QIN D,LIU Y,et al. Control strategy for all the mode-switches of hybrid electric vehicle[J]. Advances in Mechanical Engineering,2016,8(11):1-17.
[5] 林歆悠,郑清香,吴超宇.基于GA-ECMS电机转矩优化的混合动力系统协调控制[J].机械工程学报,2020,56(2):145-153.LIN Xinyou, ZHENG Qingxiang, WU Chaoyu.Coordinated control of hybrid power system based on GA-ECMS motor torque optimization[J]. Journal of Mechanical Engineering,2020,56(2):145-153.
[6] 赵治国,黄琪琪,倪润宇.串并联混合动力系统自适应模式切换优化控制[J].同济大学学报(自然科学版),2023,51(6):943-953.ZHAO Zhiguo,HUANG Qiqi,NI Runyu. Adaptive mode switching optimization control for series-parallel hybrid power systems[J]. Journal of Tongji University(Natural Science Edition),2023,51(6):943-953.
[7] WANG C,ZHAO Z,ZHANG T,et al. Mode transition coordinated control for a compound power-split hybrid car[J]. Journal of Mechanical Systems and Signal Processing,2017,87:192-205.
[8] 廖永康.基于P2构型混合动力驱动模式切换扭矩协调控制研究[D].重庆:重庆大学,2017.LIAO Yongkang. Research on torque coordination control of hybrid drive mode switching based on P2configuration[D]. Chongqing:Chongqing University,2017.
[9] SUN J,XING G,LIU X,et al. A novel torque coordination control strategy of a single-shaft parallel hybrid electric vehicle based on model predictive control[J]. Mathematical Problems in Engineering,2015(1):1-12.
[10] XU S,TIAN X,WANG C,et al. A novel coordinated control strategy for parallel hybrid electric vehicles during clutch slipping process[J]. Applied Sciences,2022,12(16):8317-8336.
[11] ZHANG L,YANG L,GUO X,et al. Stage-by-phase multivariable combination control for centralized and distributed drive modes switching of electric vehicles[J].Mechanism and Machine Theory,2020,147:103752.
[12] 罗勇,李豪,常光宝,等. P2.5-PHPS发动机至混合驱动模式切换过程动态协调控制研究[J].重庆理工大学学报(自然科学),2023,37(12):28-39.LUO Yong,LI Hao,CHANG Guangbao,et al. Dynamic coordinated control during the transition from P2.5-PHPS engine to hybrid drive mode[J]. Journal of Chongqing University of Technology(Natural Science),2023,37(12):28-39.
[13] XUE Q, ZHANG X, CHEN H, et al. Dynamic coordinated control strategy of a dual-motor hybrid electric vehicle based on clutch friction torque observer[J].Heliyon,2024,10(5):27255-27278.
[14] AIYUN G, ZHUMU F, FAZHAN T. Dynamic coordinated control based on sliding mode controller during mode switching with ICE starting for an HEV[J].IEEE Access,2020(8):60428-60443.
[15] SHI D,LIU S,SHEN Y,et al. Analysis and optimization of transient mode switching behavior for power split hybrid electric vehicle with clutch collaboration[J].Automotive Innovation,2023,7(1):150-165.
[16] LIANG C,XU X,WANG F,et al. Coordinated control strategy for mode transition of DM-PHEV based on MLD[J]. Nonlinear Dynamics,2021,103(1):1-24.
[17] FU Z,SU P,SONG S,et al. Mode transition coordination control for PHEV based on cascade predictive method[J].IEEE Access,2019(7):138403-138414.
[18] XIAO Y,LI Q,LIU H. The optimization and control of the engagement pressure for a helicopter dry clutch[J].Machines,2024,12(8):533-548.
[19] 何洪文,孟祥飞.混合动力电动汽车能量管理技术研究综述[J].北京理工大学学报,2022,42(8):773-783.HE Hongwen,MENG Xiangfei. A review of energy management technologies for hybrid electric vehicles[J].Transactions of Beijing Institute of Technology,2022,42(8):773-783.
[20] 胡明辉,陈爽,曾剑峰.双电机耦合系统驱动模式切换控制策略研究[J].机械工程学报,2017,53(14):59-67.HU Minghui,CHEN Shuang,ZENG Jianfeng. Research on drive mode switching control strategy of dual-motor coupled system[J]. Journal of Mechanical Engineering,2017,53(14):59-67.
[21] 丁千,翟红梅.机械系统摩擦动力学研究进展[J].力学进展,2013,43(1):112-131.DING Qian, ZHAI Hongmei. Advances in friction dynamics of mechanical systems[J]. Advances in Mechanics,2013,43(1):112-131.
[22] ZHU C,CHEN Z,SHI Z,et al. Study on the engagement characteristics and control strategy of high speed difference dry friction clutch[J]. Machines,2023,11(3):407-430.