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首页> 外文期刊>SAE International Journal of Alternative Powertrains >An Application of the Particle Velocity Transfer Path Analysis to a Hybrid Electric Vehicle Motor Sound
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An Application of the Particle Velocity Transfer Path Analysis to a Hybrid Electric Vehicle Motor Sound

机译：粒子速度传递路径分析在混合动力汽车电动机声中的应用

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摘要

A pioneering approach to implement transfer path analysis (TPA) is proposed in this paper through applying it to an automobile. We propose to use particle velocity as a measure of TPA, in addition to using sound pressure as a conventional measure for TPA. These two quantities together will give a comprehensive and complete definition of sound. Although sound pressure is a scalar, while particle velocity is a vector, it is also proposed that the same technique of the conventional sound pressure TPA should be independently applicable to each component of particle velocity vector. This has been experimentally verified with a study on our test box system. In this paper, we apply the proposed TPA to an actual vehicle to examine its applicability, advantages and limitations. The driving motor sound of a hybrid electric vehicle is chosen as the case study. A tri-axial particle velocity sensor which also measures sound pressure at the same point is utilized in the experiment. Both structure-borne and air-borne sound paths are considered, and a miniature shaker and a volume velocity source are employed for the frequency response function measurement, respectively. Our results show, for our work on the real vehicle, that our proposed particle velocity TPA works just as well as the conventional sound pressure TPA with comparable error levels. Furthermore, we discuss the details of phase effect in the path rank ordering. While the common approach employs consideration of both amplitude and phase, an alternative treatment may be exercised for sound vector. The analysis presented in this study is limited to the frequency domain. Finally, we briefly touch on the aspect of using sound intensity as a measure of TPA.
机译：本文提出了一种通过将其应用于汽车来实现传输路径分析（TPA）的开创性方法。除了使用声压作为TPA的常规量度外，我们还建议使用粒子速度作为TPA的量度。这两个数量将共同给出声音的全面而完整的定义。尽管声压是一个标量，而粒子速度是一个矢量，但还建议与常规声压TPA相同的技术应独立应用于粒子速度矢量的每个分量。这已经通过对我们的测试箱系统的研究得到了实验验证。在本文中，我们将建议的TPA应用于实际车辆，以检查其适用性，优点和局限性。案例研究选择了混合动力电动汽车的驱动马达声音。实验中还使用了一个三轴粒子速度传感器，该传感器还可以在同一点测量声压。考虑了结构声和空气声路径，并且分别使用微型振动器和体积速度源进行频率响应函数测量。我们的结果表明，对于我们在实际车辆上的工作，我们提出的粒子速度TPA与具有可比较误差水平的传统声压TPA一样好。此外，我们讨论了路径等级排序中相位效应的细节。虽然通用方法同时考虑了幅度和相位，但是可以对声音矢量进行替代处理。本研究中提出的分析仅限于频域。最后，我们简要介绍一下使用声音强度作为TPA的度量。

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