Diesel Knock Detection Using Time-Frequency Analysis
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摘要: 基于分析爆震對柴油機表面振動的影響,給出了用時頻分析檢測柴油機爆震的方法,代替傳統的模式識別方法.實驗證明,在時頻分布圖上可以清楚地分辨所對應的不同的頻率響應.Abstract: Joint Time-Frequency Distribution is fit for the analysis of transient and non-stationary signals such as engine surface vibrations.By use of Time-Frequency Analysis,the result of tangible benefits can be obtained on Time-Frequency graphics when detecting knock from the signals generated by these transient phenomena in diesel engines.
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Key words:
- diesel engines /
- knock /
- time-frequency analysis /
- fault detection
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