Noise Reduction of Two-Speed Automatic Transmission for Pure Electric Vehicles

IEEE Intelligent Vehicles Symposium. IEEE Intelligent Vehicles Symposium Pub Date : 2023-02-10 DOI:10.3390/vehicles5010014

Zhaoyao Shi, Bo Liu, H. Yue, Xiaoxiao Wu, Shuhan Wang

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Abstract

At present, the noise of pure electric vehicles is a research hotspot, especially the noise of automatic transmission. In order to reduce the noise problem in the test, this paper proposes a method to optimize the local structure of the gearbox housing. First, the noise is evaluated and analyzed by combining subjective and objective methods, and the subjective score and noise order information are obtained. Then the factors that have great influence on the transmission error are explored, and the gearbox housing is finally determined as the optimization objective. Through finite element analysis, the weak position of the gearbox housing can be located quickly and accurately, and then the static and dynamic stiffness of the housing can be improved by adding and changing stiffeners. The simulation results show that the performance of the optimized housing is significantly improved. After the noise test of the whole vehicle, the noise of the two-speed automatic transmission is significantly reduced, and the subjective evaluation results are good.

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纯电动汽车双速自动变速器降噪研究

目前，纯电动汽车噪声问题是一个研究热点，尤其是自动变速器噪声问题。为了降低试验中的噪声问题，本文提出了一种对齿轮箱壳体局部结构进行优化的方法。首先，采用主客观相结合的方法对噪声进行评价和分析，得到主观评分和噪声阶数信息;然后对影响传动误差较大的因素进行了探讨，最终确定齿轮箱壳为优化目标。通过有限元分析，可以快速准确地定位齿轮箱箱体的薄弱位置，然后通过增加和改变加劲筋来提高箱体的静、动刚度。仿真结果表明，优化后的壳体性能得到了显著提高。经过整车噪声测试，双速自动变速器噪声明显降低，主观评价结果良好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Intelligent Vehicles Symposium. IEEE Intelligent Vehicles Symposium

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