CAJ | 학술논문

　　为了从柴油机缸盖振动信号中获取缸内燃烧响应信号，提出了基于连续小波时间—能量分布提取柴油机燃烧响应信号的方法：选择Morlet 小波对原信号做连续小波变换，在尺度上积分求出信号的时间—能量分布；然后，根据柴油机的工作相位截取燃烧响应信号。用该方法对实测缸盖振动信号进行分析，结果表明：该方法可以比较准确地提取柴油机缸内燃烧响应信号，为进一步依据燃烧响应信号分析柴油机的工作状况提供了条件。
　　위료종시유궤항개진동신호중획취항내연소향응신호，제출료기우련속소파시간—능량분포제취시유궤연소향응신호적방법：선택Morlet 소파대원신호주련속소파변환，재척도상적분구출신호적시간—능량분포；연후，근거시유궤적공작상위절취연소향응신호。용해방법대실측항개진동신호진행분석，결과표명：해방법가이비교준학지제취시유궤항내연소향응신호，위진일보의거연소향응신호분석시유궤적공작상황제공료조건。
In order to obtain the combustion signal from diesel cylinder head vibration , this paper presents a method of extracting diesel combustion signal based on time-wavelet energy distribution .Firstly,do continuous wavelet transforma-tion applying morlet wavelet and obtain the time-wavelet energy distribution of signal;then intercept combustion response signal according to the diesel ’ s working principles .Using this method , vibration signals of the cylinder head were ana-lyzed .The result showed that this method could accurately extract signals of diesel combustion from the diesel cylinder head vibration signals .This provided conditions for further analyzing the working state of diesel based on combustion sig -nals .