考虑不对称负载的传动系统扭振特性及抑制方法

doi:10.19562/j.chinasae.qcgc.2025.05.010

Abstract

Abstract:

The dual-motor coupled drive is a common configuration for the Electro-mechanical Transmission （EMT） system in tracked vehicles， which is characterized by input-output coupling， high power transmission efficiency， and variable load conditions. However， most existing torsional vibration control strategies for EMT are designed for symmetric excitation conditions on both sides， which do not align well with real-world operating scenarios. To improve the torsional vibration under asymmetric excitation， an EMT torsional vibration model is first established to investigate the vibration energy coupling effect between the two sides of the EMT under asymmetric excitation and its influence mechanism on the system's dynamic behavior. Based on these findings， a disturbance compensation method based on dual-loop feedback is proposed， and a torsional vibration suppression strategy tailored for EMT under asymmetric excitation is developed. Verification results show that this strategy can effectively suppress torsional vibration of the EMT system under such excitation conditions.

Key words: tracked vehicle, electro-mechanical transmission system, asymmetric excitation, torsional vibration, decoupling

Dianzhao Yang,Hui Liu,Pu Gao,Changle Xiang. Torsional Vibration Characteristics and Suppression Method of Drivetrain Considering Asymmetric Loads[J].Automotive Engineering, 2025, 47(5): 897-909.

Figures/Tables 27

阶次	2	3	阶次	2	3
$J A$	3.1e-3	1.6e-2	$J B$	-3.1e-3	1.6e-2
$J r 1$	3.8e-11	-4.3e-10	$J r 3$	-3.8e-11	-4.3e-10
$J s 1$	-1.6e-5	8.3e-5	$J s 3$	1.6e-5	8.3e-5
$J c 1$	-1.1e-4	5.4e-4	$J c 3$	1.1e-4	5.4e-4
$J g 1$	6.0e-6	-3.1e-5	$J g 3$	-6.0e-6	-3.1e-5
$J r 2$	4.2e-5	1.1e-3	$J r 4$	-4.2e-5	1.1e-3
$J s 2$	-6.4e-6	3.3e-5	$J s 4$	6.4e-6	3.3e-5
$J c 2$	-7.2e-5	2.0e-3	$J c 4$	7.2e-5	2.0e-3
$J g 2$	6.4e-6	2.8e-5	$J g 4$	-6.4e-6	2.8e-5
$J r 5$	2.5e-10	-5.5e-10	$J r 6$	-2.5e-10	-5.5e-10
$J s 5$	-1.1e-6	3.6e-5	$J s 6$	1.1e-6	3.6e-5
$J c 5$	-4.7e-6	1.5e-4	$J c 6$	4.7e-6	1.5e-4
$J g 5$	5.1e-7	-1.6e-5	$J g 6$	-5.1e-7	-1.6e-5
$J w l$	0.71	-0.71	$J w r$	-0.71	-0.71

车身惯量	0.9 $J w$	$J w$	1.1 $J w$	1.2 $J w$
半轴转矩波动	3 925.9	3 877.0	3 705.1	3 655.1
车辆速度波动	1.12	1.06	1.02	0.96

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阶次	1	2	3	4
原模型/ Hz	0	1.43	2.13	460.28
降阶模型/ Hz	0	1.43	2.13	452.20

变化倍数	2	4	6	8
半轴转矩波动	2 573.9	3 877.0	4 280.1	4 574.7
车辆速度波动	0.47	1.06	1.63	1.92

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Torsional Vibration Characteristics and Suppression Method of Drivetrain Considering Asymmetric Loads

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