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Method for matching power system and drive system based on vibration performance

A technology of transmission system and matching method, which is applied in the field of matching of power and transmission system based on vibration performance, and can solve problems such as the inability to solve the excitation frequency coupling resonance problem

Active Publication Date: 2014-09-24
HUNAN UNIV
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Problems solved by technology

[0004] However, none of the above methods can solve the resonance problem caused by the coupling between the powertrain mode and the excitation frequency of the transmission shaft and the coupling between the meshing frequency of the main reduction gear and a certain order natural frequency of the rear axle, and this problem does exist in practice. , so this paper proposes a new matching method for power and transmission system

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  • Method for matching power system and drive system based on vibration performance
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  • Method for matching power system and drive system based on vibration performance

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Embodiment Construction

[0027] Refer to the attached Figure 1-6 Specific embodiments of the present invention will be described in detail.

[0028] In the process of automobile development, there are usually two situations: first, for pre-developed models, since there is no actual complete vehicle in the development of the whole vehicle, the relevant performance of the vehicle can only be checked through simulation; second, for the Vehicles that have been developed can be tested on real vehicles, and the relevant performance of the vehicle can be judged based on the test data.

[0029] The invention proposes a vibration performance-based power and transmission system matching method for pre-developed vehicle models. The method completes the vehicle power and transmission system matching process through modeling and simulation.

[0030] Such as figure 1 As shown, the method for matching power and transmission system based on vibration performance of the present invention, the specific operation ste...

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Abstract

The invention relates to a method for matching a power system and a drive system based on vibration performance. The method includes the steps that the rigid body mode of the power system, the drive system, the main speed reducing ratio and the mode of a rear axle system are matched reasonably, the rigid body mode of the power system cannot stimulate the drive system mode, and the exciting force frequency below the main speed reducing ratio cannot stimulate the mode of the rear axle system. The method is mainly and specifically used for automobile model development at the earlier stage. Due to the fact that a practical entire automobile does not exist in entire automobile development, checking can only be achieved through simulation, CAE simulated analysis is conducted on the power system and the drive system, a mode distribution table is planned, the power system and the drive system are matched reasonably, and the phenomena that the rigid body mode of the power system stimulates the drive system mode, and the exciting force frequency below the main speed reducing ratio stimulates the mode of the rear axle system so that resonance can happen are avoided. The entire automobile NVH performance is improved, the development cycle is shortened, and the development cost of an automobile is lowered.

Description

technical field [0001] The invention relates to a vehicle testing method, in particular to a vibration performance-based power and transmission system matching method. Background technique [0002] Automobile NVH technology is one of the core technologies of automobile research and development. The quality of automobile NVH performance will greatly affect the production and sales of automobiles. For the research on the matching of automobile power and transmission system, domestic and foreign studies mainly focus on the influence of transmission system matching on vehicle dynamics, economy and emissions, and have achieved good results, but rarely involve vibration-based dynamics. Research on matching method with transmission system. [0003] At present, many domestic scholars have conducted research on vibration and noise. For example, Dr. Zhao Tonghang of Jilin University’s doctoral thesis in 2008 studied the noise inside the car from the perspective of the transmission pa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 何智成胡朝辉赵红艳陈少伟
Owner HUNAN UNIV
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