燃油箱油液晃动声的测量技术研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (24) : 187-191.

论文

燃油箱油液晃动声的测量技术研究

费翔 1 ，蒋伟康 1，朱志勇 2，杨文华 2

作者信息 +

RESEARCH ON NOISE OF FUEL TANK SLOSHING STAND EXPERIMENT

Fei Xiang 1 Jiang Weikang 1 Zhu Zhiyong 2 Yang Wenhua 2

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文章历史 +

摘要

为了排除汽车燃油箱台架实验中台架本身振动信号对油箱晃动噪声的影响，设计了台架测试实验并提出一种信号处理的方法，通过建立多输入、单输出系统模型，进行偏奇异值分析辨识独立声源和典型振动测点，并对振动和噪声信号进行相干分析计算，从噪声信号中分离出油箱燃油晃动噪声时域信号。提出了得到声压级修正曲线的方法，能快速实现燃油箱台架实验噪声评价结果的修正。该信号处理方法能够有效剔除台架实验中其他环境噪声的干扰，得到仅由燃油晃动引起的噪声信号。

Abstract

To exclude the interference of the bench vibration on the fuel tank sloshing noise experiment, a signal processing method was proposed. By using a multi-input/single-output system method, the independent sound sources and the typical vibration test points were identified by singular value analysis. The coherence of typical vibration and noise signals was calculated by using coherence analysis methods. The fuel tank sloshing noise was separated from combined signals of stand and tank. To quickly correct the noise results of the fuel tank sloshing bench evaluation test, a method was proposed to get the sound pressure level correction curve. This signal processing method can effectively eliminate the interference from the bench vibration during the test.

导出引用

费翔 ;蒋伟康;朱志勇;杨文华 . 燃油箱油液晃动声的测量技术研究[J]. 振动与冲击, 2014, 33(24): 187-191

Fei Xiang Jiang Weikang Zhu Zhiyong Yang Wenhua . RESEARCH ON NOISE OF FUEL TANK SLOSHING STAND EXPERIMENT[J]. Journal of Vibration and Shock, 2014, 33(24): 187-191