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Electric drive system dynamic characteristic analysis method

A technology of electric drive system and dynamic characteristics, which is applied in the field of vehicle analysis, can solve the problems of inaccurate analysis results, inability to accurately simulate the characteristics of electric drive system components, and oversimplified modeling, etc., and achieve the effect of high calculation accuracy

Pending Publication Date: 2022-07-29
CHINA FIRST AUTOMOBILE
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Problems solved by technology

[0004] In the prior art, most of the centralized parameter models are used to model and analyze the gear transmission system. Although the computational efficiency of the centralized parameter modeling method is high, it cannot accurately simulate the characteristics of the components of the electric drive system, especially for components such as housings and bearings. The modeling of the model is too simplified, which leads to inaccurate calculation and analysis results of the dynamic response

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  • Electric drive system dynamic characteristic analysis method
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Embodiment Construction

[0052] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must hav...

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Abstract

The invention relates to the technical field of vehicle analysis, and particularly discloses an electric drive system dynamic characteristic analysis method, which comprises the following steps of: modeling an electric drive system rigid-flexible coupling model; when the rigid-flexible coupling model of the electric drive system is modeled, finite element modeling of a box component, finite element modeling of a differential shell, finite element modeling of a bearing component, finite element modeling of a shaft component and finite element modeling of a gear meshing component are established respectively. In an electric drive system rigid-flexible coupling model and a part generality division model, the mutual coupling relation between the models is fully considered, and the calculation precision is higher.

Description

technical field [0001] The invention relates to the technical field of vehicle analysis, in particular to a dynamic characteristic analysis method of an electric drive system. Background technique [0002] In traditional internal combustion engine vehicles, the engine noise can better cover up the vibration noise of the gear transmission system, but in pure electric vehicles, the electric drive system includes a motor, a reducer connected to the motor drive, and a differential gear connected to the reducer drive. , due to the lack of engine noise masking effect, electromagnetic noise and gear order noise are prominent. And the high-speed and integrated development of the electric drive system makes the NVH (Noise, Vibration, Harshness) problems of the electric drive system more complicated. [0003] At present, the NVH problems of high-speed and integrated electric drive systems mainly include the following three points: the influence of the high-speed drive motor whose spe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/15G06F30/17G06F111/04G06F119/14
CPCG06F30/23G06F30/15G06F30/17G06F2111/04G06F2119/14
Inventor 于博瑞白学斌金子嵛王学旭张冰石珊贾旭东梁宏宇
Owner CHINA FIRST AUTOMOBILE