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首页> 外文期刊>American journal of applied sciences >AN ANALYSIS OF SOUND FOR FAULT ENGINE
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AN ANALYSIS OF SOUND FOR FAULT ENGINE

机译：故障引擎的声音分析

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摘要

Various types of faults of the gasoline engine may result in similar symptoms. Sound analysis of engine has been conducted to diagnose the engine faults. This study presents a study of sound analysis of the normal engine and the engine with three different fault conditions. The gasoline engine was our target of this study. The engine sound has been recorded by using a microphone at the engine room for three directions. Three conditions of engine faults including the engine that is not smooth while idling, the engine that goes missing while idling and the engine that has no power are simulated. In the signal processing of the sound, we use five signal features including fundamental frequency, long term spectrum, energy, long term cestrum and zero crossing rate. Thereafter, the important differences between normal engine and the fault engines are concluded. These proposed signal features can be used to discriminate all three conditions and the engine with normal condition effectively.
机译：汽油发动机的各种故障可能导致相似的症状。进行了发动机的声音分析以诊断发动机故障。这项研究提出了对正常发动机和具有三种不同故障状况的发动机进行声音分析的研究。汽油发动机是我们这项研究的目标。引擎声音已通过在机舱中使用麦克风记录了三个方向的声音。模拟了发动机故障的三个条件，包括空转时不平稳的发动机，空转时失踪的发动机和无动力的发动机。在声音的信号处理中，我们使用五个信号功能，包括基频，长期频谱，能量，长期发散和过零率。此后，得出了正常发动机和故障发动机之间的重要区别。这些建议的信号特征可用于有效区分所有三种情况和正常情况下的发动机。

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