双离合器协同的功率分流式混合动力汽车动态协调优化控制研究

doi:10.19562/j.chinasae.qcgc.2022.12.009

Abstract

Abstract:

For the power split hybrid electric vehicle integrated with multi-clutch， the transient mode switching behavior and optimal dynamic coordinated control strategy from pure electric mode to hybrid driving mode involving the state collaboration of two clutches are studied. Based on the lever analogy and the matrix method， the dynamic models of the system at different switching stages are established. The feasibility analysis of the dual-clutch working sequence is conducted according to the engine start-stop control and transient mode switching requirements， and the mode switching logic is further formulated. On this basis， for the mode switching quality degradation caused by the collaboration slipping of the two clutches， the weighted sum of the vehicle longitudinal jerk， clutch friction work and mode switching time is taken as the optimization objective， and the simulated annealing algorithm is applied to optimize the slipping behavior of different clutch engagement and disengagement processes. In order to address the problem that the fixed engine speed adjustment strategy is difficult to adapt to the requirements of different acceleration conditions， the adaptive engine speed adjustment strategy in hybrid driving mode is constructed to realize adaptive torque regulation of motor MG1 according to the driving torque requirements under different conditions. Simulation and hardware-in-the-loop （HIL） test results show that the proposed optimal dynamic coordinated control can not only reduce the mode switching jerk of the power split HEV effectively for the dual clutch collaboration process， but also enables good working condition adaptability， which can ensure good transient mode switching quality under different acceleration conditions.

Key words: hybrid electric vehicle, dynamic coordinated control, adaptive control, simulated annealing, hardware in the loop

Dehua Shi,Xiangwei Rong,Shaohua Wang,Kaimei Zhang,Long Chen,Chun Li. Research on the Optimal Dynamic Coordinated Control of Power Split Hybrid Electric Vehicles with Dual-Clutch Collaboration[J].Automotive Engineering, 2022, 44(12): 1877-1888.

Figures/Tables 13

References 21

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部件	参数	数值
整车	整车质量m/kg	1 398
	滚动阻力系数f_roll	0.008
	迎风面积A/m²	1.746
	空气阻力系数C_d	0.3
	车轮半径r/m	0.287
	主减速器速比	3.93
发动机	最大功率/kW	54
	最大转矩/（N·m）	115
	最大转速/（r·min^-1）	4 700
MG1	最大功率/kW	30
	最大输出转矩/（N·m）	305
	最大转速/（r·min^-1）	12 000
MG2	最大功率/kW	30
	最大输出转矩/（N·m）	305
	最大转速/（r·min^-1）	12 000
行星排特征参数	行星排1/行星排2	2.11/2.11

仿真参数	数值
T_{CR1j_opt}	88.97
σ_{CR1_opt}	12.95
σ_{CR3_opt}	60
n	0.23
Q	0.006 8
P	0.000 27
O	1.27

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Research on the Optimal Dynamic Coordinated Control of Power Split Hybrid Electric Vehicles with Dual-Clutch Collaboration

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