Vehicle noise simulation test method and device and electronic equipment

By obtaining the bench test sound power level data of the electric drive system and building a noise simulation model, the accuracy problem of electric vehicle noise simulation testing was solved, and more efficient noise simulation results and simple electric drive package noise reduction performance evaluation were achieved.

CN120595782AActive Publication Date: 2025-09-05CHONGQING CHANGAN AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202511109778.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-08
Publication Date
2025-09-05
Estimated Expiration
2045-08-08

AI Technical Summary

Technical Problem

Existing technologies have difficulty in accurately simulating the real noise excitation of electric drive systems at different orders, resulting in insufficient accuracy in electric vehicle noise simulation tests.

Method used

By obtaining the bench test sound power level data of the electric drive system, a noise simulation model is constructed, and the statistical energy analysis model (SEA) is used to simulate the electric drive noise excitation source, simplifying the internal modeling of the electric drive housing and improving the accuracy of the noise simulation results.

Benefits of technology

It improves the accuracy of electric vehicle noise simulation testing, simplifies the modeling process, can more realistically reflect the actual electric drive excitation of the vehicle under different working conditions, and provides a simple method for evaluating the noise reduction performance of electric drive packages.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a noise simulation testing method and device of a vehicle and electronic equipment, and relates to the technical field of vehicles, in particular to the technical field of simulation testing, and the method comprises the steps: obtaining the sound power level data of a bench test of a to-be-tested electric drive system; constructing a noise simulation model of the target vehicle, and determining an electric drive noise excitation source in the noise simulation model based on the sound power level data; and performing a noise simulation test based on the noise simulation model to obtain a noise simulation test result. The noise excitation source in the electric drive shell is determined based on the bench test result, electric drive actual excitation of the vehicle under different working conditions can be better reflected, and then the accuracy of the noise simulation result is improved.
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Citation Information

Patent Citations

  • Test system for vehicle acoustical power and test method thereof

    CN103994892A

  • Method and device for electric drive bridge system, electronic equipment and storage medium

    CN117725715A

  • Sound power determination method and device, computer equipment and storage medium

    CN118520718A

  • Noise vibration and harshness (NVH) problem positioning method, device and equipment of motor, medium and program product

    CN118549812A

  • Electric drive howling analysis and prediction method and device based on transmission path, and terminal

    CN118862436A

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