小波分析在柴油机气缸动力性能检测与故障诊断中的应用  

Application of Wavelet Analysis to Monitor Dynamic Property of Diesel

作　　者：沈寿林[1] 郑海起[1] 唐力伟 张英堂 张中民 

机构地区：[1]军械工程学院兵器工程系

出　　处：《振动．测试与诊断》1999年第2期105-110,共6页Journal of Vibration,Measurement & Diagnosis

摘　　要：提出了一种基于小波变换的飞轮瞬时转速检测柴油机气缸动力性能的新方法。对电涡流位移传感器拾取的飞轮轮齿通过信号直接进行时域采样，结合小波变换通过软件处理，获得精度很高的发动机工作瞬时转速波动信号，从而有效地检测柴油机气缸动力性能。A newly developed technique for monitoring the dynamic property of diesels by the wavelet transform of fly wheel instantaneous rotational speed has been developed. The speed is simply measured by an eddy current displacement sensor opposite to the fly wheel gear teeth. A precise speed fluctuation waveform of the diesel is obtained by the wavelet transform, which can be used to monitor the dynamic property of the diesel validly.

关 键 词：柴油机 气缸 故障诊断 小波分析 动力性能 

分 类 号：TK423.2[动力工程及工程热物理—动力机械及工程] T428[一般工业技术]