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首页> 外文会议>SAE Noise and Vibration Conference and Exhibition >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：粒子速度转移路径分析对混合动力电动汽车电动机声的应用

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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：通过将其应用于汽车，提出了实现转移路径分析（TPA）的开创性方法。除了使用声压作为TPA的常规测量之外，我们提出使用粒子速度作为TPA的量度。这两次一起将提供完全完整的声音定义。尽管声压是标量，但粒子速度是载体，也提出了与常规声压TPA的相同技术应该独立适用于粒子速度向量的每个组分。这已经通过关于我们的测试箱系统的研究进行了实验验证。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，优缺点。选择混合动力电动车辆的驱动电动机声作为案例研究。在实验中使用了在同一点上测量声压的三轴粒子速度传感器。考虑结构和空气传播的声音路径，并且分别用于频率响应函数测量的微型振动器和体积速度源。我们的结果表明，对于我们的真实车辆的工作，我们提出的粒子速度TPA的工作方式以及具有可比误差水平的传统声压TPA。此外，我们讨论了路径排序中的相位效应的细节。虽然公共方法采用考虑幅度和阶段，但是可以对声音矢量进行替代治疗。本研究中提出的分析仅限于频域。最后，我们简要触及使用声音强度作为TPA度量的方面。

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