Acta Armamentarii

Modeling and Optimal Control of Low-Temperature Starting Process of Electro-Mechanical Transmission for Special Tracked Vehicles

SHUAIZhibin;HEShuai;LIGuohui;LIYaoheng;LIYong;ZHANGYing;JIANHongchao

Acta Armamentarii, 2023, 44(1): 117-128. DOI: 10.12382/bgxb.2022.0803

控制策略	主要参数设置	说明
1	T_m=29.6N·m	油泵电机工作在电动模式,驱动电机不参与低温启动
2	T_m=29.6N·m P_d=P_bm-P_o	油泵电机工作在电动模式,驱动电机在电池放电功率约束下以最大功率发热
3	P_hm=1kW θ_th=-35℃	基于规则的低温启动策略
4	P_hm=1kW; α=4.8;β=15; γ=0.06;κ=1	基于动态规划的低温启动策略

Table 3 Four cold-starting strategies and parameters settings

Other figure/table from this article

Table 4 Comparison of cold-startingtimeand energy consumption of the four strategies
Fig.1 Structure of double-motor coupling drive electro-mechanical transmission
Fig.2 Quick cold starting scheme for electro-mechanical transmission
Fig.3 Diagram of energy distribution during cold starting
Fig.4 Equivalent circuit of Rint model for power battery
Fig.5 Calculation flow of cold-starting simulation
Table 2 Simulation parameters for cold-starting process
Fig.6 Temperature characteristic curves for kinematic viscosity and density of 5W hydraulic oil transmission
Fig.7 Contour curves of driving torque of the oil pump varying with speed and temperature
Fig.8 Speed curve of pump motor at different oil temperatures
Fig.9 Curves of oil temperature and flow under different starting strategies
Fig.10 Curves of motor power under different starting strategies
Fig.11 Comparison of power consumption under different starting strategies
Table 1 Rule-based control strategy of cold-starting process