基于LADRC的纯电动汽车双离合变速器换挡控制

doi:10.19562/j.chinasae.qcgc.2024.09.014

Abstract

Abstract:

For the uncertainty of the shift control model and parameters and the existing unknown disturbances of the two-speed dual clutch transmission （2DCT） of pure electric vehicles， a linear active disturbance rejection controller （LADRC） method is proposed. Firstly， the dynamic model of the 2DCT shifting process is established， and the shifting process is analyzed. Then， considering the uncertainty and unknown disturbance of the control model， the LADRC controller is applied to the shifting process to track the desired rotational speed， and the Extended State Observer （ESO） is used to estimate the disturbance in real time and compensate for it. Finally， it is compared with the PID control. Simulation and experimental results show that the controller has smaller tracking error and strong robustness， which ensures good gear shifting quality.

Key words: pure electric vehicles, dual-clutch transmissions, shifting control, active disturbance rejection controller, extended state observer

Bolin He,Yong Chen,Qinglin Dai. Control Strategy for Dual-Clutch Transmission Gear Shifting Process in Pure Electric Vehicles Based on LADRC[J].Automotive Engineering, 2024, 46(9): 1668-1677.

Figures/Tables 25

References 29

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参数	单位	数值	参数	单位	数值
b_m	N·m·s·rad^-1	0.002	μ_d		0.025
I_m	kg·m²	0.042	R	m	0.15
b_L	N·m·s·rad^-1	0.002	m	kg	1 635
I_L	kg·m²	0.022	f		0.015
b_H	N·m·s·rad^-1	0.002	C_D		2.19
I_H	kg·m²	0.025	i₀		3.91
b_w	N·m·s·rad^-1	0.005	i₁		3
I_w	kg·m²	0.291	i₂		1.19

LADRC		PID
ω₀	15 000	K_P	138
b₀	0.042	K_i	0.37
k_p	3 000	K_d	100

项目	LADRC	PID
冲击度/（m·s^-3）	7.56	7.71
滑摩功/kJ	11.48	11.72
抗干扰能力	强	弱

Control Strategy for Dual-Clutch Transmission Gear Shifting Process in Pure Electric Vehicles Based on LADRC

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References 29

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