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Open AccessArticle

Low-Frequency Road Noise of Electric Vehicles Based on Measured Road Surface Morphology

by Zhenqi Yu 1,2, Dong Cheng 2 and Xingyuan Huang 1,*
1
School of Mechatronics Engineering, Nanchang University, Nanchang 330031, China
2
Product Development & Technical Center, Jiangling Motors Co., Ltd, Nanchang 330001, China
*
Author to whom correspondence should be addressed.
World Electr. Veh. J. 2019, 10(2), 33; https://doi.org/10.3390/wevj10020033
Received: 27 March 2019 / Revised: 8 May 2019 / Accepted: 11 May 2019 / Published: 30 May 2019
In this paper, the noise vibration harshness (NVH) road surface morphology of a test site is scanned to establish a data processing system for the road surface, which can be used to transform the road surface morphology into the road surface excitation required for the road noise simulation analysis. The road surface morphology of the test site is used as the excitation input of the simulation analysis. The results obtained from the simulation analysis are equivalent to the experimental results. Using the actual scanning road surface morphology to simulate the excitation of a vehicle, the noise, as well as the vibration response of the vehicle under the actual road excitation of NVH in the early stage of vehicle development, can be accurately predicted. In the physical prototype stage, the rectification of vehicle road noise and the optimization to provide the needed excitation for the simulation analysis can be done, which will reduce the labor costs of the relevant experiment. Therefore, this method of road noise research has important engineering significance. View Full-Text
Keywords: Road surface morphology scanning; road surface excitation; road noise simulation Road surface morphology scanning; road surface excitation; road noise simulation
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Yu, Z.; Cheng, D.; Huang, X. Low-Frequency Road Noise of Electric Vehicles Based on Measured Road Surface Morphology. World Electr. Veh. J. 2019, 10, 33.

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